#115 fix lint

* Build SQLite 3.41.0

* Update pivot_vtab

* Add Pearson correlation coefficient function extension, build

* Add an easy way to running test locally without Nodejs

* Use RSS sum to pick top2 processes for the report

* Try previous Ubuntu LTS as a workaround for Firefox worker not starting

.github/workflows/test.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   test:
     name: Run tests
-    runs-on: ubuntu-latest    
+    runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js

Dockerfile.test

@@ -0,0 +1,24 @@
+# An easy way to run tests locally without Nodejs installed:
+#
+#     docker build -t sqliteviz/test -f Dockerfile.test .
+#
+
+FROM node:12
+
+RUN set -ex; \
+    apt update; \
+    apt install -y chromium firefox-esr; \
+    npm install -g npm@7
+
+WORKDIR /tmp/build
+
+COPY package.json package-lock.json ./
+COPY lib lib
+RUN npm install
+
+COPY . .
+
+RUN set -ex; \
+    sed -i 's/browsers: \[.*\],/browsers: ['"'FirefoxHeadlessTouch'"'],/' karma.conf.js
+
+RUN npm run lint -- --no-fix && npm run test

lib/sql-js/Dockerfile

@@ -1,4 +1,4 @@
-FROM emscripten/emsdk:2.0.24
+FROM emscripten/emsdk:3.0.1
 
 WORKDIR /tmp/build
 

lib/sql-js/README.md

@@ -43,6 +43,8 @@ SQLite [miscellaneous extensions][3] included:
 SQLite 3rd party extensions included:
 
 1. [pivot_vtab][5] -- a pivot virtual table
+2. `pearson` correlation coefficient function extension from [sqlean][21]
+   (which is part of [squib][20])
 
 To ease the step to have working clone locally, the build is committed into
 the repository.
@@ -99,3 +101,5 @@ described in [this message from SQLite Forum][12]:
 [17]: https://sqlite.org/contrib/
 [18]: https://sqlite.org/contrib//download/extension-functions.c?get=25
 [19]: https://github.com/lana-k/sqliteviz/blob/master/tests/lib/database/sqliteExtensions.spec.js
+[20]: https://github.com/mrwilson/squib/blob/master/pearson.c
+[21]: https://github.com/nalgeon/sqlean/blob/incubator/src/pearson.c

lib/sql-js/benchmark/README.md

@@ -1,14 +1,25 @@
 # SQLite WebAssembly build micro-benchmark
 
-This directory contains a micro-benchmark for evaluating SQLite
-WebAssembly builds performance on typical SQL queries, run from
-`make.sh` script. It can also serve as a smoke test.
+This directory contains a micro-benchmark for evaluating SQLite WebAssembly
+builds performance on read and write SQL queries, run from `make.sh` script. If
+the script has permission to `nice` processes and [Procpath][1] is installed,
+e.g. it is run with `sudo -E env PATH=$PATH ./make.sh`, it'll `renice` all
+processes running inside the benchmark containers. It can also serve as a smoke
+test (e.g. for memory leaks).
 
-The benchmark operates on a set of SQLite WebAssembly builds expected
-in `lib/build-$NAME` directories each containing `sql-wasm.js` and
-`sql-wasm.wasm`. Then it creates a Docker image for each, and runs
-the benchmark in Firefox and Chromium using Karma in the container.
+The benchmark operates on a set of SQLite WebAssembly builds expected in
+`lib/build-$NAME` directories each containing `sql-wasm.js` and
+`sql-wasm.wasm`. Then it creates a Docker image for each, and runs the
+benchmark in Firefox and Chromium using Karma in the container.
 
-After successful run, the benchmark result of each build is contained
-in `build-$NAME-result.json`. The JSON result files can be analysed
-using `result-analysis.ipynb` Jupyter notebook.
+After successful run, the benchmark produces the following per each build:
+
+- `build-$NAME-result.json`
+- `build-$NAME.sqlite` (if Procpath is installed)
+- `build-$NAME.svg` (if Procpath is installed)
+
+These files can be analysed using `result-analysis.ipynb` Jupyter notebook.
+The SVG is a chart with CPU and RSS usage of each test container (i.e. Chromium
+run, then Firefox run per container).
+
+[1]: https://pypi.org/project/Procpath/

lib/sql-js/benchmark/make.sh

@@ -1,7 +1,8 @@
 #!/bin/bash -e
 
 cleanup () {
-  rm -rf lib/dist $flag_file
+  rm -rf lib/dist "$renice_flag_file"
+  docker rm -f sqljs-benchmark-run 2> /dev/null || true
 }
 trap cleanup EXIT
 
@@ -11,34 +12,36 @@ if [ ! -f sample.csv ]; then
     | gunzip -c > sample.csv
 fi
 
+PLAYBOOK=procpath/karma_docker.procpath
+
 # for renice to work run like "sudo -E env PATH=$PATH ./make.sh"
-test_ni=$(nice -n -1 nice)
-if [ $test_ni == -1 ]; then
-  flag_file=$(mktemp)
+test_ni=$(nice -n -5 nice)
+if [ $test_ni == -5 ]; then
+  renice_flag_file=$(mktemp)
 fi
-(
-  while [ -f $flag_file ]; do
-    root_pid=$(
-      docker ps -f status=running -f name='^sqljs-benchmark-' -q \
-        | xargs -r -I{} -- docker inspect -f '{{.State.Pid}}' {}
-    )
-    if [ ! -z $root_pid ]; then
-      procpath query -d $'\n' "$..children[?(@.stat.pid == $root_pid)]..pid" \
-        | xargs -I{} -- renice -n -1 -p {} > /dev/null
-    fi
-    sleep 1
-  done &
-)
+{
+  while [ -f $renice_flag_file ]; do
+    procpath --logging-level ERROR play -f $PLAYBOOK renice:watch
+  done
+} &
 
 shopt -s nullglob
 for d in lib/build-* ; do
   rm -rf lib/dist
   cp -r $d lib/dist
+  sample_name=$(basename $d)
 
-  name=$(basename $d)
-  docker build -t sqliteviz/sqljs-benchmark:$name .
-  docker rm sqljs-benchmark-$name 2> /dev/null || true
-  docker run -it --cpus 2 --name sqljs-benchmark-$name sqliteviz/sqljs-benchmark:$name
-  docker cp sqljs-benchmark-$name:/tmp/build/suite-result.json ${name}-result.json
-  docker rm sqljs-benchmark-$name
+  docker build -t sqliteviz/sqljs-benchmark .
+  docker rm sqljs-benchmark-run 2> /dev/null || true
+  docker run -d -it --cpus 2 --name sqljs-benchmark-run sqliteviz/sqljs-benchmark
+  {
+    rm -f ${sample_name}.sqlite
+    procpath play -f $PLAYBOOK -o database_file=${sample_name}.sqlite track:record
+    procpath play -f $PLAYBOOK -o database_file=${sample_name}.sqlite \
+      -o plot_file=${sample_name}.svg track:plot
+  } &
+
+  docker attach sqljs-benchmark-run
+  docker cp sqljs-benchmark-run:/tmp/build/suite-result.json ${sample_name}-result.json
+  docker rm sqljs-benchmark-run
 done

lib/sql-js/benchmark/procpath/karma_docker.procpath

@@ -0,0 +1,28 @@
+# This command may run when "sqljs-benchmark-run" does not yet exist or run
+[renice:watch]
+interval: 2
+repeat: 30
+environment:
+  ROOT_PID=docker inspect -f "{{.State.Pid}}" sqljs-benchmark-run 2> /dev/null || true
+query:
+  PIDS=$..children[?(@.stat.pid in [$ROOT_PID])]..pid
+command:
+  echo $PIDS | tr , '\n' | xargs --no-run-if-empty -I{} -- renice -n -5 -p {}
+
+# Expected input arguments: database_file
+[track:record]
+interval: 1
+stop_without_result: 1
+environment:
+  ROOT_PID=docker inspect -f "{{.State.Pid}}" sqljs-benchmark-run
+query:
+  $..children[?(@.stat.pid == $ROOT_PID)]
+pid_list: $ROOT_PID
+
+# Expected input arguments: database_file, plot_file
+[track:plot]
+moving_average_window: 5
+title: Chromium vs Firefox (№1 RSS, №2 CPU)
+custom_query_file:
+  procpath/top2_rss.sql
+  procpath/top2_cpu.sql

lib/sql-js/benchmark/procpath/top2_cpu.sql

@@ -0,0 +1,29 @@
+WITH diff_all AS (
+    SELECT
+        record_id,
+        ts,
+        stat_pid,
+        stat_utime + stat_stime - LAG(stat_utime + stat_stime) OVER (
+            PARTITION BY stat_pid
+            ORDER BY record_id
+        ) tick_diff,
+        ts - LAG(ts) OVER (
+            PARTITION BY stat_pid
+            ORDER BY record_id
+        ) ts_diff
+    FROM record
+), diff AS (
+    SELECT * FROM diff_all WHERE tick_diff IS NOT NULL
+), one_time_pid_condition AS (
+    SELECT stat_pid
+    FROM record
+    GROUP BY 1
+    ORDER BY SUM(stat_utime + stat_stime) DESC
+    LIMIT 2
+)
+SELECT
+    ts,
+    stat_pid pid,
+    100.0 * tick_diff / (SELECT value FROM meta WHERE key = 'clock_ticks') / ts_diff value
+FROM diff
+JOIN one_time_pid_condition USING(stat_pid)

lib/sql-js/benchmark/procpath/top2_rss.sql

@@ -0,0 +1,13 @@
+WITH one_time_pid_condition AS (
+    SELECT stat_pid
+    FROM record
+    GROUP BY 1
+    ORDER BY SUM(stat_rss) DESC
+    LIMIT 2
+)
+SELECT
+    ts,
+    stat_pid pid,
+    stat_rss / 1024.0 / 1024 * (SELECT value FROM meta WHERE key = 'page_size') value
+FROM record
+JOIN one_time_pid_condition USING(stat_pid)

lib/sql-js/build.py

@@ -2,9 +2,11 @@ import logging
 import subprocess
 from pathlib import Path
 
-
+# See the setting descriptions on these pages:
+# - https://emscripten.org/docs/optimizing/Optimizing-Code.html
+# - https://github.com/emscripten-core/emscripten/blob/main/src/settings.js
 cflags = (
-    '-O2',
+    # SQLite configuration
     '-DSQLITE_DEFAULT_CACHE_SIZE=-65536',  # 64 MiB
     '-DSQLITE_DEFAULT_MEMSTATUS=0',
     '-DSQLITE_DEFAULT_SYNCHRONOUS=0',
@@ -13,26 +15,26 @@ cflags = (
     '-DSQLITE_ENABLE_FTS3',
     '-DSQLITE_ENABLE_FTS3_PARENTHESIS',
     '-DSQLITE_ENABLE_FTS5',
-    '-DSQLITE_ENABLE_JSON1',
     '-DSQLITE_ENABLE_NORMALIZE',
     '-DSQLITE_EXTRA_INIT=extra_init',
     '-DSQLITE_OMIT_DEPRECATED',
     '-DSQLITE_OMIT_LOAD_EXTENSION',
     '-DSQLITE_OMIT_SHARED_CACHE',
     '-DSQLITE_THREADSAFE=0',
+    # Compile-time optimisation
+    '-Os',  # reduces the code size about in half comparing to -O2
+    '-flto',
 )
 emflags = (
     # Base
     '--memory-init-file', '0',
-    '-s', 'RESERVED_FUNCTION_POINTERS=64',
     '-s', 'ALLOW_TABLE_GROWTH=1',
-    '-s', 'SINGLE_FILE=0',
     # WASM
     '-s', 'WASM=1',
     '-s', 'ALLOW_MEMORY_GROWTH=1',
-    # Optimisation
-    '-s', 'INLINING_LIMIT=50',
-    '-O3',
+    '-s', 'ENVIRONMENT=web,worker',
+    # Link-time optimisation
+    '-Os',
     '-flto',
     # sql.js
     '-s', 'EXPORTED_FUNCTIONS=@src/sqljs/exported_functions.json',
@@ -50,22 +52,22 @@ def build(src: Path, dst: Path):
         'emcc',
         *cflags,
         '-c', src / 'sqlite3.c',
-        '-o', out / 'sqlite3.bc',
+        '-o', out / 'sqlite3.o',
     ])
     logging.info('Building LLVM bitcode for extension-functions.c')
     subprocess.check_call([
         'emcc',
         *cflags,
         '-c', src / 'extension-functions.c',
-        '-o', out / 'extension-functions.bc',
+        '-o', out / 'extension-functions.o',
     ])
 
     logging.info('Building WASM from bitcode')
     subprocess.check_call([
         'emcc',
         *emflags,
-        out / 'sqlite3.bc',
-        out / 'extension-functions.bc',
+        out / 'sqlite3.o',
+        out / 'extension-functions.o',
         '-o', out / 'sql-wasm.js',
     ])
 

lib/sql-js/configure.py

@@ -8,7 +8,7 @@ from pathlib import Path
 from urllib import request
 
 
-amalgamation_url = 'https://sqlite.org/2022/sqlite-amalgamation-3390000.zip'
+amalgamation_url = 'https://sqlite.org/2023/sqlite-amalgamation-3410000.zip'
 
 # Extension-functions
 # ===================
@@ -28,10 +28,11 @@ extension_urls = (
     ('https://sqlite.org/src/raw/09f967dc?at=decimal.c', 'sqlite3_decimal_init'),
     # Third-party extension
     # =====================
-    ('https://github.com/jakethaw/pivot_vtab/raw/08ab0797/pivot_vtab.c', 'sqlite3_pivotvtab_init'),
+    ('https://github.com/jakethaw/pivot_vtab/raw/9323ef93/pivot_vtab.c', 'sqlite3_pivotvtab_init'),
+    ('https://github.com/nalgeon/sqlean/raw/95e8d21a/src/pearson.c', 'sqlite3_pearson_init'),
 )
 
-sqljs_url = 'https://github.com/sql-js/sql.js/archive/refs/tags/v1.5.0.zip'
+sqljs_url = 'https://github.com/sql-js/sql.js/archive/refs/tags/v1.7.0.zip'
 
 
 def _generate_extra_init_c_function(init_function_names):

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "sqliteviz",
-  "version": "0.18.1",
+  "version": "0.23.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "sqliteviz",
-      "version": "0.18.1",
+      "version": "0.23.1",
       "license": "Apache-2.0",
       "dependencies": {
         "codemirror": "^5.57.0",
@@ -15,7 +15,7 @@
         "html2canvas": "^1.1.4",
         "jquery": "^3.6.0",
         "nanoid": "^3.1.12",
-        "papaparse": "^5.3.1",
+        "papaparse": "^5.4.1",
         "pivottable": "^2.23.0",
         "plotly.js": "^1.58.4",
         "promise-worker": "^2.0.1",
@@ -50,6 +50,7 @@
         "eslint-plugin-promise": "^4.2.1",
         "eslint-plugin-standard": "^4.0.0",
         "eslint-plugin-vue": "^6.2.2",
+        "flush-promises": "^1.0.2",
         "karma": "^3.1.4",
         "karma-firefox-launcher": "^2.1.0",
         "karma-webpack": "^4.0.2",
@@ -5248,9 +5249,9 @@
       "dev": true
     },
     "node_modules/caniuse-lite": {
-      "version": "1.0.30001352",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001352.tgz",
-      "integrity": "sha512-GUgH8w6YergqPQDGWhJGt8GDRnY0L/iJVQcU3eJ46GYf52R8tk0Wxp0PymuFVZboJYXGiCqwozAYZNRjVj6IcA==",
+      "version": "1.0.30001488",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001488.tgz",
+      "integrity": "sha512-NORIQuuL4xGpIy6iCCQGN4iFjlBXtfKWIenlUuyZJumLRIindLb7wXM+GO8erEhb7vXfcnf4BAg2PrSDN5TNLQ==",
       "dev": true,
       "funding": [
         {
@@ -5260,6 +5261,10 @@
         {
           "type": "tidelift",
           "url": "https://tidelift.com/funding/github/npm/caniuse-lite"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
         }
       ]
     },
@@ -10086,6 +10091,12 @@
       "resolved": "https://registry.npmjs.org/flip-pixels/-/flip-pixels-1.0.2.tgz",
       "integrity": "sha512-oXbJGbjDnfJRWPC7Va38EFhd+A8JWE5/hCiKcK8qjCdbLj9DTpsq6MEudwpRTH+V4qq+Jw7d3pUgQdSr3x3mTA=="
     },
+    "node_modules/flush-promises": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/flush-promises/-/flush-promises-1.0.2.tgz",
+      "integrity": "sha512-G0sYfLQERwKz4+4iOZYQEZVpOt9zQrlItIxQAAYAWpfby3gbHrx0osCHz5RLl/XoXevXk0xoN4hDFky/VV9TrA==",
+      "dev": true
+    },
     "node_modules/flush-write-stream": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/flush-write-stream/-/flush-write-stream-1.1.1.tgz",
@@ -16370,9 +16381,9 @@
       "dev": true
     },
     "node_modules/papaparse": {
-      "version": "5.3.2",
-      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.3.2.tgz",
-      "integrity": "sha512-6dNZu0Ki+gyV0eBsFKJhYr+MdQYAzFUGlBMNj3GNrmHxmz1lfRa24CjFObPXtjcetlOv5Ad299MhIK0znp3afw=="
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.4.1.tgz",
+      "integrity": "sha512-HipMsgJkZu8br23pW15uvo6sib6wne/4woLZPlFf3rpDyMe9ywEXUsuD7+6K9PRkJlVT51j/sCOYDKGGS3ZJrw=="
     },
     "node_modules/parallel-transform": {
       "version": "1.2.0",
@@ -27489,7 +27500,6 @@
       "integrity": "sha512-iFv9J3F5VKUPcbx+TqW5qhGmAVyXQxPRpKpPOuTLFIVTzg+iwJnrqVbL4kJU5ECGDxPESW2oCVgxv9bTlDPu7w==",
       "dev": true,
       "requires": {
-        "@babel/core": "^7.11.0",
         "@babel/helper-compilation-targets": "^7.9.6",
         "@babel/helper-module-imports": "^7.8.3",
         "@babel/plugin-proposal-class-properties": "^7.8.3",
@@ -27502,7 +27512,6 @@
         "@vue/babel-plugin-jsx": "^1.0.3",
         "@vue/babel-preset-jsx": "^1.2.4",
         "babel-plugin-dynamic-import-node": "^2.3.3",
-        "core-js": "^3.6.5",
         "core-js-compat": "^3.6.5",
         "semver": "^6.1.0"
       }
@@ -29627,9 +29636,9 @@
       "dev": true
     },
     "caniuse-lite": {
-      "version": "1.0.30001352",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001352.tgz",
-      "integrity": "sha512-GUgH8w6YergqPQDGWhJGt8GDRnY0L/iJVQcU3eJ46GYf52R8tk0Wxp0PymuFVZboJYXGiCqwozAYZNRjVj6IcA==",
+      "version": "1.0.30001488",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001488.tgz",
+      "integrity": "sha512-NORIQuuL4xGpIy6iCCQGN4iFjlBXtfKWIenlUuyZJumLRIindLb7wXM+GO8erEhb7vXfcnf4BAg2PrSDN5TNLQ==",
       "dev": true
     },
     "canvas-fit": {
@@ -33656,6 +33665,12 @@
       "resolved": "https://registry.npmjs.org/flip-pixels/-/flip-pixels-1.0.2.tgz",
       "integrity": "sha512-oXbJGbjDnfJRWPC7Va38EFhd+A8JWE5/hCiKcK8qjCdbLj9DTpsq6MEudwpRTH+V4qq+Jw7d3pUgQdSr3x3mTA=="
     },
+    "flush-promises": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/flush-promises/-/flush-promises-1.0.2.tgz",
+      "integrity": "sha512-G0sYfLQERwKz4+4iOZYQEZVpOt9zQrlItIxQAAYAWpfby3gbHrx0osCHz5RLl/XoXevXk0xoN4hDFky/VV9TrA==",
+      "dev": true
+    },
     "flush-write-stream": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/flush-write-stream/-/flush-write-stream-1.1.1.tgz",
@@ -38840,9 +38855,9 @@
       "dev": true
     },
     "papaparse": {
-      "version": "5.3.2",
-      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.3.2.tgz",
-      "integrity": "sha512-6dNZu0Ki+gyV0eBsFKJhYr+MdQYAzFUGlBMNj3GNrmHxmz1lfRa24CjFObPXtjcetlOv5Ad299MhIK0znp3afw=="
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.4.1.tgz",
+      "integrity": "sha512-HipMsgJkZu8br23pW15uvo6sib6wne/4woLZPlFf3rpDyMe9ywEXUsuD7+6K9PRkJlVT51j/sCOYDKGGS3ZJrw=="
     },
     "parallel-transform": {
       "version": "1.2.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sqliteviz",
-  "version": "0.21.1",
+  "version": "0.24.0",
   "license": "Apache-2.0",
   "private": true,
   "scripts": {
@@ -16,7 +16,7 @@
     "html2canvas": "^1.1.4",
     "jquery": "^3.6.0",
     "nanoid": "^3.1.12",
-    "papaparse": "^5.3.1",
+    "papaparse": "^5.4.1",
     "pivottable": "^2.23.0",
     "plotly.js": "^1.58.4",
     "promise-worker": "^2.0.1",
@@ -51,6 +51,7 @@
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-standard": "^4.0.0",
     "eslint-plugin-vue": "^6.2.2",
+    "flush-promises": "^1.0.2",
     "karma": "^3.1.4",
     "karma-firefox-launcher": "^2.1.0",
     "karma-webpack": "^4.0.2",

src/assets/styles/tables.css

@@ -107,3 +107,9 @@ table.sqliteviz-table {
   font-size: 11px;
   color: var(--color-text-base);
 }
+
+.sqliteviz-table tbody td[data-isNull="true"],
+.sqliteviz-table tbody td[data-isBlob="true"] {
+  color: var(--color-text-light-2);
+  font-style: italic;
+}

src/components/IconButton.vue

@@ -1,6 +1,7 @@
 <template>
-  <div
-    :class="['icon-btn', { active }, { disabled }]"
+  <button
+    :class="['icon-btn', { active }]"
+    :disabled="disabled"
     @click="onClick"
     @mouseenter="showTooltip($event, tooltipPosition)"
     @mouseleave="hideTooltip"
@@ -12,7 +13,7 @@
     <span v-if="tooltip" class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
       {{ tooltip }}
     </span>
-  </div>
+  </button>
 </template>
 
 <script>
@@ -38,11 +39,12 @@ export default {
   box-sizing: border-box;
   width: 26px;
   height: 26px;
-  cursor: pointer;
   display: flex;
   align-items: center;
   justify-content: center;
   position: relative;
+  background-color: transparent;
+  border: none;
 }
 .icon-btn:hover {
   border: 1px solid var(--color-border);
@@ -56,12 +58,12 @@ export default {
   fill: var(--color-accent);
 }
 
-.disabled.icon-btn  .icon >>> path,
-.disabled.icon-btn  .icon >>> circle {
+.icon-btn:disabled  .icon >>> path,
+.icon-btn:disabled  .icon >>> circle {
   fill: var(--color-border);
 }
 
-.disabled.icon-btn {
+.icon-btn:disabled {
   cursor: default;
   pointer-events: none;
 }

src/components/Splitpanes/index.vue

@@ -75,14 +75,23 @@ export default {
   props: {
     horizontal: { type: Boolean, default: false },
     before: { type: Object },
-    after: { type: Object }
+    after: { type: Object },
+    default: {
+      type: Object,
+      default: () => {
+        return {
+          before: 50,
+          after: 50
+        }
+      }
+    }
   },
   data () {
     return {
       container: null,
       paneBefore: this.before,
       paneAfter: this.after,
-      beforeMinimising: {
+      beforeMinimising: !this.after.size || !this.before.size ? this.default : {
         before: this.before.size,
         after: this.after.size
       },

src/components/SqlTable/index.vue

@@ -18,7 +18,12 @@
         ref="table-container"
         @scroll="onScrollTable"
       >
-      <table ref="table" class="sqliteviz-table">
+      <table
+        ref="table"
+        class="sqliteviz-table"
+        tabindex="0"
+        @keydown="onTableKeydown"
+      >
         <thead>
           <tr>
             <th v-for="(th, index) in columns" :key="index" ref="th">
@@ -28,9 +33,18 @@
         </thead>
         <tbody>
           <tr v-for="rowIndex in currentPageData.count" :key="rowIndex">
-            <td v-for="(col, colIndex) in columns" :key="colIndex">
+            <td
+              v-for="(col, colIndex) in columns"
+              :data-col="colIndex"
+              :data-row="pageSize * (currentPage - 1) + rowIndex - 1"
+              :data-isNull="isNull(getCellValue(col, rowIndex))"
+              :data-isBlob="isBlob(getCellValue(col, rowIndex))"
+              :key="colIndex"
+              :aria-selected="false"
+              @click="onCellClick"
+            >
               <div class="cell-data" :style="cellStyle">
-                {{ dataSet.values[col][rowIndex - 1 + currentPageData.start] }}
+                {{ getCellText(col, rowIndex) }}
               </div>
             </td>
           </tr>
@@ -44,7 +58,11 @@
         <span v-if="preview">for preview</span>
         <span v-if="time">in {{ time }}</span>
       </div>
-      <pager v-show="pageCount > 1" :page-count="pageCount" v-model="currentPage" />
+      <pager
+        v-show="pageCount > 1"
+        :page-count="pageCount"
+        v-model="currentPage"
+      />
     </div>
   </div>
 </template>
@@ -62,14 +80,20 @@ export default {
       type: Number,
       default: 20
     },
-    preview: Boolean
+    page: {
+      type: Number,
+      default: 1
+    },
+    preview: Boolean,
+    selectedCellCoordinates: Object
   },
   data () {
     return {
       header: null,
       tableWidth: null,
-      currentPage: 1,
-      resizeObserver: null
+      currentPage: this.page,
+      resizeObserver: null,
+      selectedCellElement: null
     }
   },
   computed: {
@@ -99,7 +123,40 @@ export default {
       }
     }
   },
+  mounted () {
+    this.resizeObserver = new ResizeObserver(this.calculateHeadersWidth)
+    this.resizeObserver.observe(this.$refs.table)
+    this.calculateHeadersWidth()
+
+    if (this.selectedCellCoordinates) {
+      const { row, col } = this.selectedCellCoordinates
+      const cell = this.$refs.table
+        .querySelector(`td[data-col="${col}"][data-row="${row}"]`)
+      if (cell) {
+        this.selectCell(cell)
+      }
+    }
+  },
   methods: {
+    isBlob (value) {
+      return value && ArrayBuffer.isView(value)
+    },
+    isNull (value) {
+      return value === null
+    },
+    getCellValue (col, rowIndex) {
+      return this.dataSet.values[col][rowIndex - 1 + this.currentPageData.start]
+    },
+    getCellText (col, rowIndex) {
+      const value = this.getCellValue(col, rowIndex)
+      if (this.isNull(value)) {
+        return 'NULL'
+      }
+      if (this.isBlob(value)) {
+        return 'BLOB'
+      }
+      return value
+    },
     calculateHeadersWidth () {
       this.tableWidth = this.$refs['table-container'].offsetWidth
       this.$nextTick(() => {
@@ -110,18 +167,95 @@ export default {
     },
     onScrollTable () {
       this.$refs['header-container'].scrollLeft = this.$refs['table-container'].scrollLeft
+    },
+    onTableKeydown (e) {
+      const keyCodeMap = {
+        37: 'left',
+        39: 'right',
+        38: 'up',
+        40: 'down'
+      }
+
+      if (
+        !this.selectedCellElement ||
+        !Object.keys(keyCodeMap).includes(e.keyCode.toString())
+      ) {
+        return
+      }
+      e.preventDefault()
+
+      this.moveFocusInTable(this.selectedCellElement, keyCodeMap[e.keyCode])
+    },
+    onCellClick (e) {
+      this.selectCell(e.target.closest('td'), false)
+    },
+    selectCell (cell, scrollTo = true) {
+      if (!cell) {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        this.selectedCellElement = cell
+      } else if (!cell.ariaSelected || cell.ariaSelected === 'false') {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        cell.ariaSelected = 'true'
+        this.selectedCellElement = cell
+      } else {
+        cell.ariaSelected = 'false'
+        this.selectedCellElement = null
+      }
+
+      if (this.selectedCellElement && scrollTo) {
+        this.selectedCellElement.scrollIntoView()
+      }
+
+      this.$emit('updateSelectedCell', this.selectedCellElement)
+    },
+    moveFocusInTable (initialCell, direction) {
+      const currentRowIndex = +initialCell.dataset.row
+      const currentColIndex = +initialCell.dataset.col
+      let newRowIndex, newColIndex
+
+      if (direction === 'right') {
+        if (currentColIndex === this.columns.length - 1) {
+          newRowIndex = currentRowIndex + 1
+          newColIndex = 0
+        } else {
+          newRowIndex = currentRowIndex
+          newColIndex = currentColIndex + 1
+        }
+      } else if (direction === 'left') {
+        if (currentColIndex === 0) {
+          newRowIndex = currentRowIndex - 1
+          newColIndex = this.columns.length - 1
+        } else {
+          newRowIndex = currentRowIndex
+          newColIndex = currentColIndex - 1
+        }
+      } else if (direction === 'up') {
+        newRowIndex = currentRowIndex - 1
+        newColIndex = currentColIndex
+      } else if (direction === 'down') {
+        newRowIndex = currentRowIndex + 1
+        newColIndex = currentColIndex
+      }
+
+      const newCell = this.$refs.table
+        .querySelector(`td[data-col="${newColIndex}"][data-row="${newRowIndex}"]`)
+      if (newCell) {
+        this.selectCell(newCell)
+      }
     }
   },
-  mounted () {
-    this.resizeObserver = new ResizeObserver(this.calculateHeadersWidth)
-    this.resizeObserver.observe(this.$refs.table)
-    this.calculateHeadersWidth()
-  },
   beforeDestroy () {
     this.resizeObserver.unobserve(this.$refs.table)
   },
   watch: {
-    currentPageData: 'calculateHeadersWidth',
+    currentPageData () {
+      this.calculateHeadersWidth()
+      this.selectCell(null)
+    },
     dataSet () {
       this.currentPage = 1
     }
@@ -130,4 +264,13 @@ export default {
 </script>
 
 <style scoped>
+table.sqliteviz-table:focus {
+  outline: none;
+}
+.sqliteviz-table tbody td:hover {
+  background-color: var(--color-bg-light-3);
+}
+.sqliteviz-table tbody td[aria-selected="true"] {
+  box-shadow:inset 0 0 0 1px var(--color-accent);
+}
 </style>

src/components/svg/arrow.vue

@@ -0,0 +1,20 @@
+<template>
+  <svg
+    width="28"
+    height="27"
+    viewBox="0 0 28 27"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M17.9475 8.33625L12.7838 13.5L17.9475 18.6638L16.35 20.25L9.60001
+      13.5L16.35 6.75L17.9475 8.33625Z"
+      fill="#506784"
+    />
+</svg>
+</template>
+
+<script>
+export default {
+}
+</script>

src/components/svg/edgeArrow.vue

@@ -0,0 +1,26 @@
+<template>
+  <svg
+    width="27"
+    height="27"
+    viewBox="0 0 27 27"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M17.3474 8.33625L12.1837 13.5L17.3474 18.6638L15.7499 20.25L8.99991
+      13.5L15.7499 6.75L17.3474 8.33625Z"
+      fill="#506784"
+    />
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M7.19995 19.8L7.19995 7.20001H9.19995V19.8H7.19995Z"
+      fill="#506784"
+    />
+  </svg>
+</template>
+
+<script>
+export default {
+}
+</script>

src/components/svg/row.vue

@@ -0,0 +1,53 @@
+<template>
+  <svg
+    width="19"
+    height="19"
+    viewBox="0 0 19 19"
+    fill="none"
+  >
+    <g clip-path="url(#clip0_2130_5292)">
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M1.85303 11.3794L1.85303 7.80371L5.86304 7.80371L5.86304
+      11.3794L1.85303 11.3794ZM7.36304 11.3794L7.36304 7.80371L11.3428
+      7.80371L11.3428 11.3794L7.36304 11.3794ZM12.8428 11.3794L16.853
+      11.3794L16.853 7.80371L12.8428 7.80371L12.8428 11.3794ZM15.353
+      6.30371L16.853 6.30371C17.6815 6.30371 18.353 6.97528 18.353
+      7.80371L18.353 11.3794C18.353 12.2078 17.6815 12.8794 16.853
+      12.8794L15.353 12.8794L15.353 14.3111C15.353 15.0153 14.7603 15.5916
+      14.0358 15.5916L4.67027 15.5916C3.94579 15.5916 3.35303 15.0153 3.35303
+      14.3111L3.35303 12.8794L1.85303 12.8794C1.0246 12.8794 0.353027 12.2078
+      0.353027 11.3794L0.353027 7.80371C0.353027 6.97528 1.0246 6.30371
+      1.85303 6.30371L3.35303 6.30371L3.35303 4.87201C3.35303 4.16349 3.94139
+      3.59155 4.67027 3.59155L14.0358 3.59155C14.7604 3.59155 15.353 4.16117
+      15.353 4.87201L15.353 6.30371ZM14.0315 6.30371L14.0315 4.87086L11.887
+      4.87086L11.887 6.30371L12.8428 6.30371L14.0315 6.30371ZM10.387
+      6.30371L10.387 4.87086L8.26685 4.87086L8.26685 6.30371L10.387
+      6.30371ZM6.76685 6.30371L6.76685 4.87086L4.67027 4.87086L4.67027
+      6.30371L6.76685 6.30371ZM4.67027 12.8794L4.67027 14.3121L6.76685
+      14.3121L6.76685 12.8794L4.67027 12.8794ZM8.26685 12.8794L8.26685
+      14.3121L10.387 14.3121L10.387 12.8794L8.26685 12.8794ZM11.887
+      12.8794L11.887 14.3121L14.0315 14.3121L14.0315 12.8794L11.887 12.8794Z"
+      fill="#A2B1C6"
+    />
+    </g>
+    <defs>
+      <clipPath id="clip0_2130_5292">
+        <rect
+        width="18"
+        height="18"
+        fill="white"
+        transform="translate(0.353027 18.5916) rotate(-90)"
+      />
+      </clipPath>
+    </defs>
+</svg>
+</template>
+
+<script>
+
+export default {
+  name: 'RowIcon'
+}
+</script>

src/components/svg/viewCellValue.vue

@@ -0,0 +1,50 @@
+<template>
+  <svg
+    width="19"
+    height="19"
+    viewBox="0 0 19 19"
+    fill="none"
+  >
+    <g clip-path="url(#clip0_2131_6054)">
+    <path
+      d="M3.53784 11.5846L3.53784 3.14734L11.9751 3.14734V7.676C12.4655 7.51991
+      12.9771 7.47439 13.4751 7.53264V3.14734C13.4751 2.31891 12.8035 1.64734
+      11.9751 1.64734L3.53784 1.64734C2.70941 1.64734 2.03784 2.31891 2.03784
+      3.14734L2.03784 11.5846C2.03784 12.413 2.70942 13.0846 3.53784
+      13.0846H10.0831C9.771 12.6184 9.58279 12.1055 9.51083
+      11.5846H3.53784Z"
+      fill="#A2B1C6"
+    />
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M14.7887 9.9291C15.4307 10.8837 15.1773 12.1779 14.2228
+      12.8199C13.2682 13.4618 11.974 13.2084 11.332 12.2539C10.69 11.2993
+      10.9434 10.0051 11.898 9.3631C12.8525 8.72113 14.1468 8.97454 14.7887
+      9.9291ZM14.4606 14.3901L16.6181 17.5982C16.8492 17.9419 17.3153 18.0331
+      17.659 17.802C18.0027 17.5708 18.0939 17.1048 17.8628 16.7611L15.6884
+      13.5279C16.7949 12.3365 16.9801 10.4996 16.0334 9.092C14.9292 7.45002
+      12.7029 7.01412 11.0609 8.1184C9.41891 9.22268 8.98302 11.449 10.0873
+      13.0909C11.062 14.5403 12.9109 15.05 14.4606 14.3901Z"
+      fill="#A2B1C6"
+    />
+  </g>
+  <defs>
+    <clipPath id="clip0_2131_6054">
+    <rect
+      width="18"
+      height="18"
+      fill="white"
+      transform="translate(0.5 18.5916) rotate(-90)"
+    />
+    </clipPath>
+  </defs>
+</svg>
+</template>
+
+<script>
+
+export default {
+  name: 'ViewCellValueIcon'
+}
+</script>

src/lib/csv.js

@@ -73,21 +73,26 @@ export default {
         comments: false,
         step: undefined,
         complete: results => {
-          const res = {
-            data: this.getResult(results),
-            delimiter: results.meta.delimiter,
-            hasErrors: false,
-            rowCount: results.data.length
+          let res
+          try {
+            res = {
+              data: this.getResult(results),
+              delimiter: results.meta.delimiter,
+              hasErrors: false,
+              rowCount: results.data.length
+            }
+            res.messages = results.errors.map(msg => {
+              msg.type = msg.code === 'UndetectableDelimiter' ? 'info' : 'error'
+              if (msg.type === 'error') res.hasErrors = true
+              msg.hint = hintsByCode[msg.code]
+              return msg
+            })
+          } catch (error) {
+            reject(error)
           }
-          res.messages = results.errors.map(msg => {
-            msg.type = msg.code === 'UndetectableDelimiter' ? 'info' : 'error'
-            if (msg.type === 'error') res.hasErrors = true
-            msg.hint = hintsByCode[msg.code]
-            return msg
-          })
           resolve(res)
         },
-        error: (error, file) => {
+        error: error => {
           reject(error)
         },
         download: false,

src/lib/database/_sql.js

@@ -8,11 +8,11 @@ function _getDataSourcesFromSqlResult (sqlResult) {
   if (!sqlResult) {
     return {}
   }
-  const dataSorces = {}
+  const dataSources = {}
   sqlResult.columns.forEach((column, index) => {
-    dataSorces[column] = sqlResult.values.map(row => row[index])
+    dataSources[column] = sqlResult.values.map(row => row[index])
   })
-  return dataSorces
+  return dataSources
 }
 
 export default class Sql {

src/lib/database/index.js

@@ -77,7 +77,7 @@ class Database {
     }
 
     this.dbName = file ? fu.getFileName(file) : 'database'
-    this.refreshSchema()
+    await this.refreshSchema()
 
     events.send('database.import', file ? file.size : 0, {
       from: file ? 'sqlite' : 'none',

src/lib/storedInquiries/index.js

@@ -33,17 +33,16 @@ export default {
   },
 
   isTabNeedName (inquiryTab) {
-    const isFromScratch = !inquiryTab.initName
-    return inquiryTab.isPredefined || isFromScratch
+    return inquiryTab.isPredefined || !inquiryTab.name
   },
 
   save (inquiryTab, newName) {
     const value = {
       id: inquiryTab.isPredefined ? nanoid() : inquiryTab.id,
       query: inquiryTab.query,
-      viewType: inquiryTab.$refs.dataView.mode,
-      viewOptions: inquiryTab.$refs.dataView.getOptionsForSave(),
-      name: newName || inquiryTab.initName
+      viewType: inquiryTab.dataView.mode,
+      viewOptions: inquiryTab.dataView.getOptionsForSave(),
+      name: newName || inquiryTab.name
     }
 
     // Get inquiries from local storage

src/lib/tab.js

@@ -0,0 +1,59 @@
+import { nanoid } from 'nanoid'
+import time from '@/lib/utils/time'
+import events from '@/lib/utils/events'
+
+export default class Tab {
+  constructor (state, inquiry = {}) {
+    this.id = inquiry.id || nanoid()
+    this.name = inquiry.id ? inquiry.name : null
+    this.tempName = inquiry.name || (state.untitledLastIndex
+      ? `Untitled ${state.untitledLastIndex}`
+      : 'Untitled')
+    this.query = inquiry.query
+    this.viewOptions = inquiry.viewOptions || undefined
+    this.isPredefined = inquiry.isPredefined
+    this.viewType = inquiry.viewType || 'chart'
+    this.result = null
+    this.isGettingResults = false
+    this.error = null
+    this.time = 0
+    this.layout = inquiry.layout || {
+      sqlEditor: 'above',
+      table: 'bottom',
+      dataView: 'hidden'
+    }
+    this.maximize = inquiry.maximize
+
+    this.isSaved = !!inquiry.id
+    this.state = state
+  }
+
+  async execute () {
+    this.isGettingResults = true
+    this.result = null
+    this.error = null
+    const db = this.state.db
+    try {
+      const start = new Date()
+      this.result = await db.execute(this.query + ';')
+      this.time = time.getPeriod(start, new Date())
+
+      if (this.result && this.result.values) {
+        events.send('resultset.create',
+          this.result.values[this.result.columns[0]].length
+        )
+      }
+
+      events.send('query.run', parseFloat(this.time), { status: 'success' })
+    } catch (err) {
+      this.error = {
+        type: 'error',
+        message: err
+      }
+
+      events.send('query.run', 0, { status: 'error' })
+    }
+    db.refreshSchema()
+    this.isGettingResults = false
+  }
+}

src/lib/utils/clipboardIo.js

@@ -2,9 +2,11 @@ import Lib from 'plotly.js/src/lib'
 import dataUrlToBlob from 'dataurl-to-blob'
 
 export default {
-  async copyCsv (str) {
+  async copyText (str, notifyMessage) {
     await navigator.clipboard.writeText(str)
-    Lib.notifier('CSV copied to clipboard successfully', 'long')
+    if (notifyMessage) {
+      Lib.notifier(notifyMessage, 'long')
+    }
   },
 
   async copyImage (source) {

src/router.js

@@ -4,6 +4,7 @@ import Workspace from '@/views/Main/Workspace'
 import Inquiries from '@/views/Main/Inquiries'
 import Welcome from '@/views/Welcome'
 import Main from '@/views/Main'
+import LoadView from '@/views/LoadView'
 import store from '@/store'
 import database from '@/lib/database'
 
@@ -31,6 +32,11 @@ const routes = [
         component: Inquiries
       }
     ]
+  },
+  {
+    path: '/load',
+    name: 'Load',
+    component: LoadView
   }
 ]
 
@@ -39,7 +45,7 @@ const router = new VueRouter({
 })
 
 router.beforeEach(async (to, from, next) => {
-  if (!store.state.db) {
+  if (!store.state.db && to.name !== 'Load') {
     const newDb = database.getNewDatabase()
     await newDb.loadDb()
     store.commit('setDb', newDb)

src/store/actions.js

@@ -1,32 +1,17 @@
-import { nanoid } from 'nanoid'
+import Tab from '@/lib/tab'
 
 export default {
-  async addTab ({ state }, data) {
-    const tab = data ? JSON.parse(JSON.stringify(data)) : {}
-    // If no data then create a new blank one...
-    // No data.id means to create new tab, but not blank,
-    // e.g. with 'select * from csv_import' inquiry after csv import
-    if (!data || !data.id) {
-      tab.id = nanoid()
-      tab.name = null
-      tab.tempName = state.untitledLastIndex
-        ? `Untitled ${state.untitledLastIndex}`
-        : 'Untitled'
-      tab.viewType = 'chart'
-      tab.viewOptions = undefined
-      tab.isSaved = false
-    } else {
-      tab.isSaved = true
-    }
-
-    // add new tab only if was not already opened
-    if (!state.tabs.some(openedTab => openedTab.id === tab.id)) {
+  async addTab ({ state }, inquiry = {}) {
+    // add new tab only if it was not already opened
+    if (!state.tabs.some(openedTab => openedTab.id === inquiry.id)) {
+      const tab = new Tab(state, JSON.parse(JSON.stringify(inquiry)))
       state.tabs.push(tab)
       if (!tab.name) {
         state.untitledLastIndex += 1
       }
+      return tab.id
     }
 
-    return tab.id
+    return inquiry.id
   }
 }

src/store/mutations.js

@@ -1,5 +1,3 @@
-import Vue from 'vue'
-
 export default {
   setDb (state, db) {
     if (state.db) {
@@ -8,8 +6,8 @@ export default {
     state.db = db
   },
 
-  updateTab (state, { index, name, id, query, viewType, viewOptions, isSaved }) {
-    const tab = state.tabs[index]
+  updateTab (state, { tab, newValues }) {
+    const { name, id, query, viewType, viewOptions, isSaved } = newValues
     const oldId = tab.id
 
     if (id && state.currentTabId === oldId) {
@@ -26,32 +24,41 @@ export default {
       // Saved inquiry is not predefined
       delete tab.isPredefined
     }
-
-    Vue.set(state.tabs, index, tab)
   },
 
-  deleteTab (state, index) {
+  deleteTab (state, tab) {
+    const index = state.tabs.indexOf(tab)
     // If closing tab is the current opened
-    if (state.tabs[index].id === state.currentTabId) {
+    if (tab.id === state.currentTabId) {
       if (index < state.tabs.length - 1) {
         state.currentTabId = state.tabs[index + 1].id
       } else if (index > 0) {
         state.currentTabId = state.tabs[index - 1].id
       } else {
         state.currentTabId = null
-        state.currentTab = null
         state.untitledLastIndex = 0
       }
+      state.currentTab = state.currentTabId
+        ? state.tabs.find(tab => tab.id === state.currentTabId)
+        : null
     }
     state.tabs.splice(index, 1)
   },
   setCurrentTabId (state, id) {
-    state.currentTabId = id
-  },
-  setCurrentTab (state, tab) {
-    state.currentTab = tab
+    try {
+      state.currentTabId = id
+      state.currentTab = state.tabs.find(tab => tab.id === id)
+    } catch (e) {
+      console.error('Can\'t open a tab id:' + id)
+    }
   },
   updatePredefinedInquiries (state, inquiries) {
     state.predefinedInquiries = Array.isArray(inquiries) ? inquiries : [inquiries]
+  },
+  setLoadingPredefinedInquiries (state, value) {
+    state.loadingPredefinedInquiries = value
+  },
+  setPredefinedInquiriesLoaded (state, value) {
+    state.predefinedInquiriesLoaded = value
   }
 }

src/store/state.js

@@ -4,5 +4,7 @@ export default {
   currentTabId: null,
   untitledLastIndex: 0,
   predefinedInquiries: [],
+  loadingPredefinedInquiries: false,
+  predefinedInquiriesLoaded: false,
   db: null
 }

src/views/LoadView.vue

@@ -0,0 +1,200 @@
+<template>
+    <div>
+      <logs
+        id="logs"
+        :messages="messages"
+      />
+      <button
+        v-if="hasErrors"
+        id="open-workspace-btn"
+        class="secondary"
+        @click="$router.push('/workspace?hide_schema=1')">
+        Open workspace
+      </button>
+    </div>
+</template>
+
+<script>
+import fu from '@/lib/utils/fileIo'
+import database from '@/lib/database'
+import Logs from '@/components/Logs'
+import events from '@/lib/utils/events'
+
+export default {
+  name: 'LoadView',
+  components: {
+    Logs
+  },
+  data () {
+    return {
+      newDb: null,
+      messages: [],
+      dataMsg: {},
+      inquiryMsg: {}
+    }
+  },
+  computed: {
+    hasErrors () {
+      return this.dataMsg.type === 'error' || this.inquiryMsg.type === 'error'
+    }
+  },
+  async created () {
+    const {
+      data_url: dataUrl,
+      data_format: dataFormat,
+      inquiry_url: inquiryUrl,
+      inquiry_id: inquiryIds,
+      maximize
+    } = this.$route.query
+
+    events.send('share.load', null, {
+      has_data_url: !!dataUrl,
+      data_format: dataFormat,
+      has_inquiry_url: !!inquiryUrl,
+      inquiry_id_count: (inquiryIds || []).length,
+      maximize
+    })
+
+    await this.loadData(dataUrl, dataFormat)
+    const inquiries = await this.loadInquiries(inquiryUrl, inquiryIds)
+    if (inquiries && inquiries.length > 0) {
+      await this.openInquiries(inquiries, maximize)
+    }
+    if (!this.hasErrors) {
+      this.$router.push('/workspace?hide_schema=1')
+    }
+  },
+  methods: {
+    async loadData (dataUrl, dataFormat) {
+      this.newDb = database.getNewDatabase()
+      if (dataUrl) {
+        this.dataMsg = {
+          message: 'Preparing data...',
+          type: 'info'
+        }
+        this.messages.push(this.dataMsg)
+
+        // Show loading indicator after 1 second
+        const loadingDataIndicator = setTimeout(() => {
+          if (this.dataMsg.type === 'info') {
+            this.dataMsg.type = 'loading'
+          }
+        }, 1000)
+
+        if (dataFormat === 'sqlite') {
+          await this.getSqliteDb(dataUrl)
+        } else {
+          this.dataMsg.message = 'Unknown data format'
+          this.dataMsg.type = 'error'
+        }
+
+        // Loading indicator is not needed anymore
+        clearTimeout(loadingDataIndicator)
+      } else {
+        await this.newDb.loadDb()
+      }
+      this.$store.commit('setDb', this.newDb)
+    },
+    async getSqliteDb (dataUrl) {
+      try {
+        const filename = new URL(dataUrl).pathname.split('/').pop()
+        const res = await fu.readFile(dataUrl)
+        if (!res.ok) {
+          throw new Error('Fetching DB failed')
+        }
+        const file = await res.blob()
+        file.name = filename
+
+        await this.newDb.loadDb(file)
+        this.dataMsg.message = 'Data is ready'
+        this.dataMsg.type = 'success'
+      } catch (error) {
+        console.error(error)
+        this.dataMsg.message = error
+        this.dataMsg.type = 'error'
+      }
+    },
+    async loadInquiries (inquiryUrl, inquiryIds = []) {
+      if (!inquiryUrl) {
+        return []
+      }
+      // Show loading indicator after 1 second
+      const loadingInquiriesIndicator = setTimeout(() => {
+        if (this.inquiryMsg.type === 'info') {
+          this.inquiryMsg.type = 'loading'
+        }
+      }, 1000)
+      try {
+        this.inquiryMsg = {
+          message: 'Preparing inquiries...',
+          type: 'info'
+        }
+        this.messages.push(this.inquiryMsg)
+
+        const res = await fu.readFile(inquiryUrl)
+        const file = await res.json()
+
+        this.inquiryMsg.message = 'Inquiries are ready'
+        this.inquiryMsg.type = 'success'
+
+        return inquiryIds.length > 0
+          ? file.inquiries.filter(inquiry => inquiryIds.includes(inquiry.id))
+          : file.inquiries
+      } catch (error) {
+        console.error(error)
+        this.inquiryMsg.message = error
+        this.inquiryMsg.type = 'error'
+      }
+      // Loading indicator is not needed anymore
+      clearTimeout(loadingInquiriesIndicator)
+    },
+    async openInquiries (inquiries, maximize) {
+      let tabToOpen = null
+      const layout = maximize ? this.getLayout(maximize) : undefined
+      for (const inquiry of inquiries) {
+        const tabId = await this.$store.dispatch('addTab', {
+          ...inquiry,
+          id: undefined,
+          layout,
+          maximize
+        })
+        if (!tabToOpen) {
+          tabToOpen = tabId
+          this.$store.commit('setCurrentTabId', tabToOpen)
+        }
+      }
+
+      this.$store.state.currentTab.execute()
+    },
+
+    getLayout (panelToMaximize) {
+      if (panelToMaximize === 'dataView') {
+        return {
+          sqlEditor: 'hidden',
+          table: 'above',
+          dataView: 'bottom'
+        }
+      } else {
+        return {
+          sqlEditor: 'above',
+          table: 'bottom',
+          dataView: 'hidden'
+        }
+      }
+    }
+  }
+}
+</script>
+
+<style scoped>
+#logs {
+  margin: 8px auto;
+  max-width: 800px;
+
+}
+
+#open-workspace-btn {
+  margin: 16px auto;
+  display: block;
+}
+</style>

src/views/Main/Inquiries/index.vue

@@ -1,11 +1,18 @@
 <template>
-  <div>
+  <div id="my-inquiries-container">
     <div id="start-guide" v-if="allInquiries.length === 0">
       You don't have saved inquiries so far.
       <span class="link" @click="$root.$emit('createNewInquiry')">Create</span>
       the one from scratch or
       <span @click="importInquiries" class="link">import</span> from a file.
     </div>
+    <div
+      id="loading-predefined-status"
+      v-if="$store.state.loadingPredefinedInquiries"
+    >
+      <loading-indicator/>
+      Loading predefined inquiries...
+    </div>
     <div id="my-inquiries-content" ref="my-inquiries-content" v-show="allInquiries.length > 0">
       <div id="my-inquiries-toolbar">
         <div id="toolbar-buttons">
@@ -157,6 +164,7 @@ import DeleteIcon from './svg/delete'
 import CloseIcon from '@/components/svg/close'
 import TextField from '@/components/TextField'
 import CheckBox from '@/components/CheckBox'
+import LoadingIndicator from '@/components/LoadingIndicator'
 import tooltipMixin from '@/tooltipMixin'
 import storedInquiries from '@/lib/storedInquiries'
 
@@ -169,7 +177,8 @@ export default {
     DeleteIcon,
     CloseIcon,
     TextField,
-    CheckBox
+    CheckBox,
+    LoadingIndicator
   },
   mixins: [tooltipMixin],
   data () {
@@ -248,15 +257,21 @@ export default {
       }
     }
   },
-  created () {
-    storedInquiries.readPredefinedInquiries()
-      .then(inquiries => {
+  async created () {
+    this.inquiries = storedInquiries.getStoredInquiries()
+    const loadingPredefinedInquiries = this.$store.state.loadingPredefinedInquiries
+    const predefinedInquiriesLoaded = this.$store.state.predefinedInquiriesLoaded
+    if (!predefinedInquiriesLoaded && !loadingPredefinedInquiries) {
+      try {
+        this.$store.commit('setLoadingPredefinedInquiries', true)
+        const inquiries = await storedInquiries.readPredefinedInquiries()
         this.$store.commit('updatePredefinedInquiries', inquiries)
-      })
-      .catch(console.error)
-      .finally(() => {
-        this.inquiries = storedInquiries.getStoredInquiries()
-      })
+        this.$store.commit('setPredefinedInquiriesLoaded', true)
+      } catch (e) {
+        console.error(e)
+      }
+      this.$store.commit('setLoadingPredefinedInquiries', false)
+    }
   },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.calcMaxTableHeight)
@@ -323,12 +338,14 @@ export default {
       storedInquiries.updateStorage(this.inquiries)
 
       // update tab, if renamed inquiry is opened
-      const tabIndex = this.findTabIndex(processedInquiry.id)
-      if (tabIndex >= 0) {
+      const tab = this.$store.state.tabs
+        .find(tab => tab.id === processedInquiry.id)
+      if (tab) {
         this.$store.commit('updateTab', {
-          index: tabIndex,
-          name: this.newName,
-          id: processedInquiry.id
+          tab,
+          newValues: {
+            name: this.newName
+          }
         })
       }
       // hide dialog
@@ -352,9 +369,10 @@ export default {
         this.inquiries.splice(this.processedInquiryIndex, 1)
 
         // Close deleted inquiry tab if it was opened
-        const tabIndex = this.findTabIndex(this.processedInquiryId)
-        if (tabIndex >= 0) {
-          this.$store.commit('deleteTab', tabIndex)
+        const tab = this.$store.state.tabs
+          .find(tab => tab.id === this.processedInquiryId)
+        if (tab) {
+          this.$store.commit('deleteTab', tab)
         }
 
         // Clear checkbox
@@ -368,10 +386,12 @@ export default {
 
         // Close deleted inquiries if it was opened
         const tabs = this.$store.state.tabs
-        for (let i = tabs.length - 1; i >= 0; i--) {
+        let i = tabs.length - 1
+        while (i > -1) {
           if (this.selectedInquiriesIds.has(tabs[i].id)) {
-            this.$store.commit('deleteTab', i)
+            this.$store.commit('deleteTab', tabs[i])
           }
+          i--
         }
 
         // Clear checkboxes
@@ -380,9 +400,6 @@ export default {
       this.selectedInquiriesCount = this.selectedInquiriesIds.size
       storedInquiries.updateStorage(this.inquiries)
     },
-    findTabIndex (id) {
-      return this.$store.state.tabs.findIndex(tab => tab.id === id)
-    },
     exportToFile (inquiryList, fileName) {
       storedInquiries.export(inquiryList, fileName)
     },
@@ -441,6 +458,21 @@ export default {
 </script>
 
 <style scoped>
+#my-inquiries-container {
+  position: relative;
+}
+
+#loading-predefined-status {
+  position: absolute;
+  right: 0;
+  display: flex;
+  gap: 4px;
+  font-size: 12px;
+  color: var(--color-text-light-2);
+  align-items: center;
+  padding: 8px;
+}
+
 #start-guide {
   position: absolute;
   top: 50%;

src/views/Main/MainMenu.vue

@@ -80,19 +80,10 @@ export default {
       return this.$store.state.currentTab
     },
     isSaved () {
-      if (!this.currentInquiry) {
-        return false
-      }
-      const tabIndex = this.currentInquiry.tabIndex
-      const tab = this.$store.state.tabs[tabIndex]
-      return tab && tab.isSaved
+      return this.currentInquiry && this.currentInquiry.isSaved
     },
     isPredefined () {
-      if (this.currentInquiry) {
-        return this.currentInquiry.isPredefined
-      } else {
-        return false
-      }
+      return this.currentInquiry && this.currentInquiry.isPredefined
     },
     runDisabled () {
       return this.currentInquiry && (!this.$store.state.db || !this.currentInquiry.query)
@@ -145,13 +136,15 @@ export default {
 
       // Update tab in store
       this.$store.commit('updateTab', {
-        index: this.currentInquiry.tabIndex,
-        name: value.name,
-        id: value.id,
-        query: value.query,
-        viewType: value.viewType,
-        viewOptions: value.viewOptions,
-        isSaved: true
+        tab: this.currentInquiry,
+        newValues: {
+          name: value.name,
+          id: value.id,
+          query: value.query,
+          viewType: value.viewType,
+          viewOptions: value.viewOptions,
+          isSaved: true
+        }
       })
 
       // Restore data:

src/views/Main/Workspace/Tabs/Tab/DataView/Chart/index.vue

@@ -66,7 +66,8 @@ export default {
       notifyOnLogging: 1
     })
     this.$watch(
-      () => this.state.data.map(trace => `${trace.type}-${trace.mode}`)
+      () => this.state && this.state.data && this.state.data
+        .map(trace => `${trace.type}${trace.mode ? '-' + trace.mode : ''}`)
         .join(','),
       (value) => {
         events.send('viz_plotly.render', null, {
@@ -76,6 +77,7 @@ export default {
       },
       { deep: true }
     )
+    this.$emit('update:importToSvgEnabled', true)
   },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.handleResize)

src/views/Main/Workspace/Tabs/Tab/DataView/index.vue

@@ -41,7 +41,6 @@
       >
         <png-icon />
       </icon-button>
-
       <icon-button
         :disabled="!importToSvgEnabled"
         tooltip="Save as SVG"

src/views/Main/Workspace/Tabs/Tab/RunResult/Record/RowNavigator.vue

@@ -0,0 +1,69 @@
+<template>
+    <div class="record-navigator">
+        <icon-button
+            :disabled="value === 0"
+            tooltip="First row"
+            tooltip-position="top-left"
+            class="first"
+            @click="$emit('input', 0)"
+        >
+            <edge-arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === 0"
+            tooltip="Previous row"
+            tooltip-position="top-left"
+            class="prev"
+            @click="$emit('input', value - 1)"
+        >
+            <arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === total - 1"
+            tooltip="Next row"
+            tooltip-position="top-left"
+            class="next"
+            @click="$emit('input', value + 1)"
+        >
+            <arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === total - 1"
+            tooltip="Last row"
+            tooltip-position="top-left"
+            class="last"
+            @click="$emit('input', total - 1)"
+        >
+            <edge-arrow-icon :disabled="false" />
+        </icon-button>
+    </div>
+</template>
+
+<script>
+import IconButton from '@/components/IconButton'
+import ArrowIcon from '@/components/svg/arrow'
+import EdgeArrowIcon from '@/components/svg/edgeArrow'
+
+export default {
+  components: {
+    IconButton,
+    ArrowIcon,
+    EdgeArrowIcon
+  },
+  props: {
+    value: Number,
+    total: Number
+  }
+}
+</script>
+
+<style scoped>
+.record-navigator {
+    display: flex;
+}
+
+.record-navigator .next,
+.record-navigator .last {
+  transform: rotate(180deg);
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/Record/index.vue

@@ -0,0 +1,221 @@
+<template>
+  <div class="record-view">
+    <div class="table-container">
+      <table
+        ref="table"
+        class="sqliteviz-table"
+        tabindex="0"
+        @keydown="onTableKeydown"
+      >
+        <thead>
+          <tr>
+            <th/>
+            <th>
+              <div class="cell-data">
+                Row #{{ currentRowIndex + 1 }}
+              </div>
+            </th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="(col, index) in columns" :key="index">
+            <th class="column-cell">{{ col }}</th>
+            <td
+              :data-col="index"
+              :data-row="currentRowIndex"
+              :data-isNull="isNull(getCellValue(col))"
+              :data-isBlob="isBlob(getCellValue(col))"
+              :key="index"
+              :aria-selected="false"
+              @click="onCellClick"
+            >
+              <div class="cell-data">
+                {{ getCellText(col) }}
+              </div>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <div class="table-footer">
+      <div class="table-footer-count">
+        {{ rowCount }} {{rowCount === 1 ? 'row' : 'rows'}} retrieved
+        <span v-if="time">in {{ time }}</span>
+      </div>
+
+     <row-navigator v-model="currentRowIndex" :total="rowCount"/>
+    </div>
+  </div>
+</template>
+
+<script>
+import RowNavigator from './RowNavigator.vue'
+
+export default {
+  components: { RowNavigator },
+  props: {
+    dataSet: Object,
+    time: String,
+    rowIndex: { type: Number, default: 0 },
+    selectedColumnIndex: Number
+  },
+  data () {
+    return {
+      selectedCellElement: null,
+      currentRowIndex: this.rowIndex
+    }
+  },
+  computed: {
+    columns () {
+      return this.dataSet.columns
+    },
+    rowCount () {
+      return this.dataSet.values[this.columns[0]].length
+    }
+  },
+  mounted () {
+    const col = this.selectedColumnIndex
+    const row = this.currentRowIndex
+    const cell = this.$refs.table
+      .querySelector(`td[data-col="${col}"][data-row="${row}"]`)
+    if (cell) {
+      this.selectCell(cell)
+    }
+  },
+  watch: {
+    async currentRowIndex () {
+      await this.$nextTick()
+      if (this.selectedCellElement) {
+        const previouslySelected = this.selectedCellElement
+        this.selectCell(null)
+        this.selectCell(previouslySelected)
+      }
+    }
+  },
+  methods: {
+    isBlob (value) {
+      return value && ArrayBuffer.isView(value)
+    },
+    isNull (value) {
+      return value === null
+    },
+    getCellValue (col) {
+      return this.dataSet.values[col][this.currentRowIndex]
+    },
+    getCellText (col) {
+      const value = this.getCellValue(col)
+      if (this.isNull(value)) {
+        return 'NULL'
+      }
+      if (this.isBlob(value)) {
+        return 'BLOB'
+      }
+      return value
+    },
+    onTableKeydown (e) {
+      const keyCodeMap = {
+        38: 'up',
+        40: 'down'
+      }
+
+      if (
+        !this.selectedCellElement ||
+        !Object.keys(keyCodeMap).includes(e.keyCode.toString())
+      ) {
+        return
+      }
+      e.preventDefault()
+
+      this.moveFocusInTable(this.selectedCellElement, keyCodeMap[e.keyCode])
+    },
+    onCellClick (e) {
+      this.selectCell(e.target.closest('td'), false)
+    },
+    selectCell (cell, scrollTo = true) {
+      if (!cell) {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        this.selectedCellElement = cell
+      } else if (!cell.ariaSelected || cell.ariaSelected === 'false') {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        cell.ariaSelected = 'true'
+        this.selectedCellElement = cell
+      } else {
+        cell.ariaSelected = 'false'
+        this.selectedCellElement = null
+      }
+
+      if (this.selectedCellElement && scrollTo) {
+        this.selectedCellElement.scrollIntoView()
+        this.selectedCellElement.closest('.table-container').scrollTo({ left: 0 })
+      }
+
+      this.$emit('updateSelectedCell', this.selectedCellElement)
+    },
+    moveFocusInTable (initialCell, direction) {
+      const currentColIndex = +initialCell.dataset.col
+      const newColIndex = direction === 'up'
+        ? currentColIndex - 1
+        : currentColIndex + 1
+
+      const newCell = this.$refs.table
+        .querySelector(`td[data-col="${newColIndex}"][data-row="${this.currentRowIndex}"]`)
+      if (newCell) {
+        this.selectCell(newCell)
+      }
+    }
+  }
+}
+</script>
+
+<style scoped>
+table.sqliteviz-table:focus {
+  outline: none;
+}
+.sqliteviz-table tbody td:hover {
+  background-color: var(--color-bg-light-3);
+}
+.sqliteviz-table tbody td[aria-selected="true"] {
+  box-shadow: inset 0 0 0 1px var(--color-accent);
+}
+
+table.sqliteviz-table {
+  margin-top: 0;
+}
+.sqliteviz-table thead tr th {
+  border-bottom: 1px solid var(--color-border-light);
+}
+.sqliteviz-table tbody tr th {
+  font-size: 14px;
+  font-weight: 600;
+  box-sizing: border-box;
+  background-color: var(--color-bg-dark);
+  color: var(--color-text-light);
+  border-bottom: 1px solid var(--color-border-light);
+  border-right: 1px solid var(--color-border-light);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  text-align: left;
+}
+
+.table-footer {
+  align-items: center;
+}
+.record-view {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+}
+
+.table-container {
+  flex-grow: 1;
+  overflow: auto;
+}
+
+.column-cell {
+  max-width: 0;
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer.vue

@@ -0,0 +1,200 @@
+<template>
+  <div class="value-viewer">
+    <div class="value-viewer-toolbar">
+      <button
+        v-for="format in formats"
+        :key="format.value"
+        type="button"
+        :aria-selected="currentFormat === format.value"
+        :class="format.value"
+        @click="currentFormat = format.value"
+      >
+        {{ format.text }}
+      </button>
+
+      <button
+        type="button"
+        class="copy"
+        @click="copyToClipboard"
+      >
+        Copy
+      </button>
+    </div>
+    <div class="value-body">
+      <codemirror
+        v-if="currentFormat === 'json' && formattedJson"
+        :value="formattedJson"
+        :options="cmOptions"
+      />
+      <pre
+        v-if="currentFormat === 'text'"
+        :class="['text-value', { 'meta-value': isNull || isBlob }]"
+      >{{ cellText }}</pre>
+      <logs
+        v-if="messages && messages.length > 0"
+        :messages="messages"
+        class="messages"
+      />
+    </div>
+  </div>
+</template>
+
+<script>
+import { codemirror } from 'vue-codemirror'
+import 'codemirror/lib/codemirror.css'
+import 'codemirror/mode/javascript/javascript.js'
+import 'codemirror/addon/fold/foldcode.js'
+import 'codemirror/addon/fold/foldgutter.js'
+import 'codemirror/addon/fold/foldgutter.css'
+import 'codemirror/addon/fold/brace-fold.js'
+import 'codemirror/theme/neo.css'
+import cIo from '@/lib/utils/clipboardIo'
+import Logs from '@/components/Logs'
+
+export default {
+  components: {
+    codemirror,
+    Logs
+  },
+  props: {
+    cellValue: [String, Number, Uint8Array]
+  },
+  data () {
+    return {
+      formats: [
+        { text: 'JSON', value: 'json' },
+        { text: 'Text', value: 'text' }
+      ],
+      currentFormat: 'text',
+      cmOptions: {
+        tabSize: 4,
+        mode: { name: 'javascript', json: true },
+        theme: 'neo',
+        lineNumbers: true,
+        line: true,
+        foldGutter: true,
+        gutters: ['CodeMirror-linenumbers', 'CodeMirror-foldgutter'],
+        readOnly: true
+      },
+      formattedJson: '',
+      messages: []
+    }
+  },
+  computed: {
+    isBlob () {
+      return this.cellValue && ArrayBuffer.isView(this.cellValue)
+    },
+    isNull () {
+      return this.cellValue === null
+    },
+    cellText () {
+      const value = this.cellValue
+      if (this.isNull) {
+        return 'NULL'
+      }
+      if (this.isBlob) {
+        return 'BLOB'
+      }
+      return value
+    }
+  },
+  watch: {
+    currentFormat () {
+      this.messages = []
+      this.formattedJson = ''
+      if (this.currentFormat === 'json') {
+        this.formatJson(this.cellValue)
+      }
+    },
+    cellValue () {
+      if (this.currentFormat === 'json') {
+        this.formatJson(this.cellValue)
+      }
+    }
+  },
+  methods: {
+    formatJson (jsonStr) {
+      try {
+        this.formattedJson = JSON.stringify(
+          JSON.parse(jsonStr), null, 4
+        )
+      } catch (e) {
+        console.error(e)
+        this.formattedJson = ''
+        this.messages = [{
+          type: 'error',
+          message: 'Can\'t parse JSON.'
+        }]
+      }
+    },
+    copyToClipboard () {
+      cIo.copyText(this.currentFormat === 'json'
+        ? this.formattedJson
+        : this.cellValue,
+      'The value is copied to clipboard.'
+      )
+    }
+  }
+}
+</script>
+
+<style scoped>
+.value-viewer {
+  background-color: var(--color-white);
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+}
+.value-viewer-toolbar {
+  display: flex;
+  justify-content: end;
+}
+.value-body {
+  flex-grow: 1;
+  overflow: auto;
+}
+.text-value {
+  padding: 8px 8px;
+  color: var(--color-text-base);
+}
+
+.text-value.meta-value {
+  font-style: italic;
+  color: var(--color-text-light-2);
+}
+
+.messages {
+  margin: 8px;
+}
+
+.value-viewer-toolbar button {
+  font-size: 10px;
+  height: 20px;
+  padding: 0 8px;
+  border: none;
+  background: transparent;
+  color: var(--color-text-base);
+  border-radius: var(--border-radius-small);
+}
+
+.value-viewer-toolbar button:hover {
+  background-color: var(--color-bg-light);
+}
+
+.value-viewer-toolbar button[aria-selected="true"] {
+  color: var(--color-accent);
+}
+
+>>> .vue-codemirror {
+  height: 100%;
+  max-height: 100%;
+}
+>>> .CodeMirror {
+  height: 100%;
+  max-height: 100%;
+}
+>>> .CodeMirror-cursor {
+  width: 1px;
+  background: var(--color-text-base);
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/index.vue

@@ -1,31 +1,31 @@
 <template>
   <div class="run-result-panel" ref="runResultPanel">
-    <div class="run-result-panel-content">
-      <div
-        v-show="result === null && !isGettingResults && !error"
-        class="table-preview result-before"
-      >
-        Run your query and get results here
-      </div>
-      <div v-if="isGettingResults" class="table-preview result-in-progress">
-        <loading-indicator :size="30"/>
-        Fetching results...
-      </div>
-      <div
-        v-show="result === undefined && !isGettingResults && !error"
-        class="table-preview result-empty"
-      >
-        No rows retrieved according to your query
-      </div>
-      <logs v-if="error" :messages="[error]"/>
-      <sql-table
-        v-if="result"
-        :data-set="result"
-        :time="time"
-        :pageSize="pageSize"
-        class="straight"
-      />
-    </div>
+   <component
+      :is="viewValuePanelVisible ? 'splitpanes':'div'"
+      :before="{ size: 50, max: 100 }"
+      :after="{ size: 50, max: 100 }"
+      :default="{ before: 50, after: 50 }"
+      class="run-result-panel-content"
+    >
+      <template  #left-pane>
+        <div :id="'run-result-left-pane-'+tab.id" class="result-set-container"/>
+      </template>
+      <div :id="'run-result-result-set-'+tab.id" class="result-set-container"/>
+      <template #right-pane v-if="viewValuePanelVisible">
+        <div class="value-viewer-container">
+          <value-viewer
+            v-show="selectedCell"
+            :cellValue="selectedCell
+              ? result.values[result.columns[selectedCell.dataset.col]][selectedCell.dataset.row]
+              : ''"
+          />
+          <div v-show="!selectedCell" class="table-preview">
+            No cell selected to view
+          </div>
+        </div>
+      </template>
+    </component>
+
     <side-tool-bar @switchTo="$emit('switchTo', $event)" panel="table">
       <icon-button
         :disabled="!result"
@@ -44,6 +44,26 @@
       >
         <clipboard-icon/>
       </icon-button>
+
+      <icon-button
+        :disabled="!result"
+        tooltip="View record"
+        tooltip-position="top-left"
+        :active="viewRecord"
+        @click="toggleViewRecord"
+      >
+        <row-icon/>
+      </icon-button>
+
+      <icon-button
+        :disabled="!result"
+        tooltip="View value"
+        tooltip-position="top-left"
+        :active="viewValuePanelVisible"
+        @click="toggleViewValuePanel"
+      >
+        <view-cell-value-icon/>
+      </icon-button>
     </side-tool-bar>
 
     <loading-dialog
@@ -56,6 +76,48 @@
       @action="copyToClipboard"
       @cancel="cancelCopy"
     />
+
+    <teleport :to="resultSetTeleportTarget">
+      <div>
+            <div
+              v-show="result === null && !isGettingResults && !error"
+              class="table-preview result-before"
+            >
+              Run your query and get results here
+            </div>
+            <div v-if="isGettingResults" class="table-preview result-in-progress">
+              <loading-indicator :size="30"/>
+              Fetching results...
+            </div>
+            <div
+              v-show="result === undefined && !isGettingResults && !error"
+              class="table-preview result-empty"
+            >
+              No rows retrieved according to your query
+            </div>
+            <logs v-if="error" :messages="[error]"/>
+            <sql-table
+              v-if="result && !viewRecord"
+              :data-set="result"
+              :time="time"
+              :pageSize="pageSize"
+              :page="defaultPage"
+              :selected-cell-coordinates="defaultSelectedCell"
+              class="straight"
+              @updateSelectedCell="onUpdateSelectedCell"
+            />
+
+            <record
+              ref="recordView"
+              v-if="result && viewRecord"
+              :data-set="result"
+              :time="time"
+              :selected-column-index="selectedCell ? +selectedCell.dataset.col : 0"
+              :rowIndex="selectedCell ? +selectedCell.dataset.row : 0"
+              @updateSelectedCell="onUpdateSelectedCell"
+            />
+          </div>
+    </teleport>
   </div>
 </template>
 
@@ -63,9 +125,12 @@
 import Logs from '@/components/Logs'
 import SqlTable from '@/components/SqlTable'
 import LoadingIndicator from '@/components/LoadingIndicator'
-import SideToolBar from './SideToolBar'
+import SideToolBar from '../SideToolBar'
+import Splitpanes from '@/components/Splitpanes'
 import ExportToCsvIcon from '@/components/svg/exportToCsv'
 import ClipboardIcon from '@/components/svg/clipboard'
+import ViewCellValueIcon from '@/components/svg/viewCellValue'
+import RowIcon from '@/components/svg/row'
 import IconButton from '@/components/IconButton'
 import csv from '@/lib/csv'
 import fIo from '@/lib/utils/fileIo'
@@ -73,16 +138,30 @@ import cIo from '@/lib/utils/clipboardIo'
 import time from '@/lib/utils/time'
 import loadingDialog from '@/components/LoadingDialog'
 import events from '@/lib/utils/events'
+import Teleport from 'vue2-teleport'
+import ValueViewer from './ValueViewer'
+import Record from './Record/index.vue'
 
 export default {
   name: 'RunResult',
-  props: ['result', 'isGettingResults', 'error', 'time'],
+  props: {
+    tab: Object,
+    result: Object,
+    isGettingResults: Boolean,
+    error: Object,
+    time: [String, Number]
+  },
   data () {
     return {
       resizeObserver: null,
       pageSize: 20,
       preparingCopy: false,
-      dataToCopy: null
+      dataToCopy: null,
+      viewValuePanelVisible: false,
+      selectedCell: null,
+      viewRecord: false,
+      defaultPage: 1,
+      defaultSelectedCell: null
     }
   },
   components: {
@@ -93,7 +172,23 @@ export default {
     ExportToCsvIcon,
     IconButton,
     ClipboardIcon,
-    loadingDialog
+    ViewCellValueIcon,
+    RowIcon,
+    loadingDialog,
+    ValueViewer,
+    Record,
+    Splitpanes,
+    Teleport
+  },
+  computed: {
+    resultSetTeleportTarget () {
+      const base = `#${this.viewValuePanelVisible
+        ? 'run-result-left-pane'
+        : 'run-result-result-set'
+      }`
+      const tabIdPostfix = `-${this.tab.id}`
+      return base + tabIdPostfix
+    }
   },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.handleResize)
@@ -103,6 +198,12 @@ export default {
   beforeDestroy () {
     this.resizeObserver.unobserve(this.$refs.runResultPanel)
   },
+  watch: {
+    result () {
+      this.defaultSelectedCell = null
+      this.selectedCell = null
+    }
+  },
   methods: {
     handleResize () {
       this.calculatePageSize()
@@ -160,13 +261,35 @@ export default {
     },
 
     copyToClipboard () {
-      cIo.copyCsv(this.dataToCopy)
+      cIo.copyText(this.dataToCopy, 'CSV copied to clipboard successfully')
       this.$modal.hide('prepareCSVCopy')
     },
 
     cancelCopy () {
       this.dataToCopy = null
       this.$modal.hide('prepareCSVCopy')
+    },
+
+    toggleViewValuePanel () {
+      this.viewValuePanelVisible = !this.viewValuePanelVisible
+    },
+
+    toggleViewRecord () {
+      if (this.viewRecord) {
+        this.defaultSelectedCell = {
+          row: this.$refs.recordView.currentRowIndex,
+          col: this.selectedCell ? +this.selectedCell.dataset.col : 0
+        }
+        this.defaultPage = Math.ceil(
+          (this.$refs.recordView.currentRowIndex + 1) / this.pageSize
+        )
+      }
+
+      this.viewRecord = !this.viewRecord
+    },
+
+    onUpdateSelectedCell (e) {
+      this.selectedCell = e
     }
   }
 }
@@ -180,12 +303,24 @@ export default {
 }
 
 .run-result-panel-content {
-  position: relative;
   flex-grow: 1;
   height: 100%;
   width: 0;
+}
+
+.result-set-container,
+.result-set-container > div {
+  position: relative;
+  height: 100%;
+  width: 100%;
   box-sizing: border-box;
 }
+.value-viewer-container {
+  height: 100%;
+  width: 100%;
+  background-color: var(--color-white);
+  position: relative;
+}
 
 .table-preview {
   position: absolute;
@@ -194,6 +329,7 @@ export default {
   transform: translate(-50%, -50%);
   color: var(--color-text-base);
   font-size: 13px;
+  text-align: center;
 }
 
 .result-in-progress {

src/views/Main/Workspace/Tabs/Tab/index.vue

@@ -3,44 +3,46 @@
     <splitpanes
       class="query-results-splitter"
       horizontal
-      :before="{ size: 50, max: 100 }"
-      :after="{ size: 50, max: 100 }"
+      :before="{ size: topPaneSize, max: 100 }"
+      :after="{ size: 100 - topPaneSize, max: 100 }"
+      :default="{ before: 50, after: 50 }"
     >
       <template #left-pane>
-        <div :id="'above-' + tabIndex" class="above" />
+        <div :id="'above-' + tab.id" class="above" />
       </template>
       <template #right-pane>
-        <div :id="'bottom-'+ tabIndex" ref="bottomPane" class="bottomPane" />
+        <div :id="'bottom-'+ tab.id" ref="bottomPane" class="bottomPane" />
       </template>
     </splitpanes>
 
-    <div :id="'hidden-'+ tabIndex" class="hidden-part" />
+    <div :id="'hidden-'+ tab.id" class="hidden-part" />
 
-    <teleport :to="`#${layout.sqlEditor}-${tabIndex}`">
+    <teleport :to="`#${tab.layout.sqlEditor}-${tab.id}`">
       <sql-editor
         ref="sqlEditor"
-        v-model="query"
-        :is-getting-results="isGettingResults"
+        v-model="tab.query"
+        :is-getting-results="tab.isGettingResults"
         @switchTo="onSwitchView('sqlEditor', $event)"
-        @run="execute"
+        @run="tab.execute()"
       />
     </teleport>
 
-    <teleport :to="`#${layout.table}-${tabIndex}`">
+    <teleport :to="`#${tab.layout.table}-${tab.id}`">
       <run-result
-        :result="result"
-        :is-getting-results="isGettingResults"
-        :error="error"
-        :time="time"
+        :tab="tab"
+        :result="tab.result"
+        :is-getting-results="tab.isGettingResults"
+        :error="tab.error"
+        :time="tab.time"
         @switchTo="onSwitchView('table', $event)"
       />
     </teleport>
 
-    <teleport :to="`#${layout.dataView}-${tabIndex}`">
+    <teleport :to="`#${tab.layout.dataView}-${tab.id}`">
       <data-view
-        :data-source="(result && result.values) || null"
-        :init-options="initViewOptions"
-        :init-mode="initViewType"
+        :data-source="(tab.result && tab.result.values) || null"
+        :init-options="tab.viewOptions"
+        :init-mode="tab.viewType"
         ref="dataView"
         @switchTo="onSwitchView('dataView', $event)"
         @update="onDataViewUpdate"
@@ -54,15 +56,15 @@ import Splitpanes from '@/components/Splitpanes'
 import SqlEditor from './SqlEditor'
 import DataView from './DataView'
 import RunResult from './RunResult'
-import time from '@/lib/utils/time'
+
 import Teleport from 'vue2-teleport'
 import events from '@/lib/utils/events'
 
 export default {
   name: 'Tab',
-  props: [
-    'id', 'initName', 'initQuery', 'initViewOptions', 'tabIndex', 'isPredefined', 'initViewType'
-  ],
+  props: {
+    tab: Object
+  },
   components: {
     SqlEditor,
     DataView,
@@ -72,21 +74,14 @@ export default {
   },
   data () {
     return {
-      query: this.initQuery,
-      result: null,
-      isGettingResults: false,
-      error: null,
-      time: 0,
-      layout: {
-        sqlEditor: 'above',
-        table: 'bottom',
-        dataView: 'hidden'
-      }
+      topPaneSize: this.tab.maximize
+        ? this.tab.layout[this.tab.maximize] === 'above' ? 100 : 0
+        : 50
     }
   },
   computed: {
     isActive () {
-      return this.id === this.$store.state.currentTabId
+      return this.tab.id === this.$store.state.currentTabId
     }
   },
   watch: {
@@ -94,54 +89,34 @@ export default {
       immediate: true,
       async handler () {
         if (this.isActive) {
-          this.$store.commit('setCurrentTab', this)
           await this.$nextTick()
           this.$refs.sqlEditor.focus()
         }
       }
     },
-    query () {
-      this.$store.commit('updateTab', { index: this.tabIndex, isSaved: false })
+    'tab.query' () {
+      this.$store.commit('updateTab', {
+        tab: this.tab,
+        newValues: { isSaved: false }
+      })
     }
   },
+  mounted () {
+    this.tab.dataView = this.$refs.dataView
+  },
   methods: {
     onSwitchView (from, to) {
-      const fromPosition = this.layout[from]
-      this.layout[from] = this.layout[to]
-      this.layout[to] = fromPosition
+      const fromPosition = this.tab.layout[from]
+      this.tab.layout[from] = this.tab.layout[to]
+      this.tab.layout[to] = fromPosition
 
       events.send('inquiry.panel', null, { panel: to })
     },
     onDataViewUpdate () {
-      this.$store.commit('updateTab', { index: this.tabIndex, isSaved: false })
-    },
-    async execute () {
-      this.isGettingResults = true
-      this.result = null
-      this.error = null
-      const state = this.$store.state
-      try {
-        const start = new Date()
-        this.result = await state.db.execute(this.query + ';')
-        this.time = time.getPeriod(start, new Date())
-
-        if (this.result && this.result.values) {
-          events.send('resultset.create',
-            this.result.values[this.result.columns[0]].length
-          )
-        }
-
-        events.send('query.run', parseFloat(this.time), { status: 'success' })
-      } catch (err) {
-        this.error = {
-          type: 'error',
-          message: err
-        }
-
-        events.send('query.run', 0, { status: 'error' })
-      }
-      state.db.refreshSchema()
-      this.isGettingResults = false
+      this.$store.commit('updateTab', {
+        tab: this.tab,
+        newValues: { isSaved: false }
+      })
     }
   }
 }

src/views/Main/Workspace/Tabs/index.vue

@@ -5,7 +5,7 @@
         v-for="(tab, index) in tabs"
         :key="index"
         @click="selectTab(tab.id)"
-        :class="[{'tab-selected': (tab.id === selectedIndex)}, 'tab']"
+        :class="[{'tab-selected': (tab.id === selectedTabId)}, 'tab']"
       >
         <div class="tab-name">
           <span v-show="!tab.isSaved" class="star">*</span>
@@ -13,20 +13,14 @@
           <span v-else class="tab-untitled">{{ tab.tempName }}</span>
         </div>
         <div>
-          <close-icon class="close-icon" :size="10" @click="beforeCloseTab(index)"/>
+          <close-icon class="close-icon" :size="10" @click="beforeCloseTab(tab)"/>
         </div>
       </div>
     </div>
     <tab
-      v-for="(tab, index) in tabs"
+      v-for="tab in tabs"
       :key="tab.id"
-      :id="tab.id"
-      :init-name="tab.name"
-      :init-query="tab.query"
-      :init-view-options="tab.viewOptions"
-      :init-view-type="tab.viewType"
-      :is-predefined="tab.isPredefined"
-      :tab-index="index"
+      :tab="tab"
     />
     <div v-show="tabs.length === 0" id="start-guide">
       <span class="link" @click="$root.$emit('createNewInquiry')">Create</span>
@@ -38,25 +32,25 @@
     <modal name="close-warn" classes="dialog" height="auto">
       <div class="dialog-header">
         Close tab {{
-          closingTabIndex !== null
-          ? (tabs[closingTabIndex].name || `[${tabs[closingTabIndex].tempName}]`)
+          closingTab !== null
+          ? (closingTab.name || `[${closingTab.tempName}]`)
           : ''
         }}
         <close-icon @click="$modal.hide('close-warn')"/>
       </div>
       <div class="dialog-body">
         You have unsaved changes. Save changes in {{
-          closingTabIndex !== null
-          ? (tabs[closingTabIndex].name || `[${tabs[closingTabIndex].tempName}]`)
+          closingTab !== null
+          ? (closingTab.name || `[${closingTab.tempName}]`)
           : ''
         }} before closing?
       </div>
       <div class="dialog-buttons-container">
-        <button class="secondary" @click="closeTab(closingTabIndex)">
+        <button class="secondary" @click="closeTab(closingTab)">
           Close without saving
         </button>
         <button class="secondary" @click="$modal.hide('close-warn')">Cancel</button>
-        <button class="primary" @click="saveAndClose(closingTabIndex)">Save and close</button>
+        <button class="primary" @click="saveAndClose(closingTab)">Save and close</button>
       </div>
     </modal>
   </div>
@@ -73,14 +67,14 @@ export default {
   },
   data () {
     return {
-      closingTabIndex: null
+      closingTab: null
     }
   },
   computed: {
     tabs () {
       return this.$store.state.tabs
     },
-    selectedIndex () {
+    selectedTabId () {
       return this.$store.state.currentTabId
     }
   },
@@ -97,25 +91,24 @@ export default {
     selectTab (id) {
       this.$store.commit('setCurrentTabId', id)
     },
-    beforeCloseTab (index) {
-      this.closingTabIndex = index
-      if (!this.tabs[index].isSaved) {
+    beforeCloseTab (tab) {
+      this.closingTab = tab
+      if (!tab.isSaved) {
         this.$modal.show('close-warn')
       } else {
-        this.closeTab(index)
+        this.closeTab(tab)
       }
     },
-    closeTab (index) {
+    closeTab (tab) {
       this.$modal.hide('close-warn')
-      this.closingTabIndex = null
-      this.$store.commit('deleteTab', index)
+      this.$store.commit('deleteTab', tab)
     },
-    saveAndClose (index) {
+    saveAndClose (tab) {
       this.$root.$on('inquirySaved', () => {
-        this.closeTab(index)
+        this.closeTab(tab)
         this.$root.$off('inquirySaved')
       })
-      this.selectTab(this.tabs[index].id)
+      this.selectTab(tab.id)
       this.$modal.hide('close-warn')
       this.$nextTick(() => {
         this.$root.$emit('saveInquiry')

src/views/Main/Workspace/index.vue

@@ -2,8 +2,9 @@
   <div>
     <splitpanes
       class="schema-tabs-splitter"
-      :before="{ size: 20, max: 30 }"
-      :after="{ size: 80, max: 100 }"
+      :before="{ size: schemaWidth, max: 30 }"
+      :after="{ size: 100 - schemaWidth, max: 100 }"
+      :default="{ before: 20, after: 80 }"
     >
       <template #left-pane>
         <schema/>
@@ -28,9 +29,14 @@ export default {
     Splitpanes,
     Tabs
   },
+  data () {
+    return {
+      schemaWidth: this.$route.query.hide_schema === '1' ? 0 : 20
+    }
+  },
   async beforeCreate () {
     const schema = this.$store.state.db.schema
-    if (!schema || schema.length === 0) {
+    if ((!schema || schema.length === 0) && this.$store.state.tabs.length === 0) {
       const stmt = [
         '/*',
         ' * Your database is empty. In order to start building charts',

tests/components/Splitpanes/Splitpanes.spec.js

@@ -40,7 +40,7 @@ describe('Splitpanes.vue', () => {
     expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.height).to.equal('40%')
   })
 
-  it('toggles correctly', async () => {
+  it('toggles correctly - no maximized initially', async () => {
     // mount the component
     const wrapper = shallowMount(Splitpanes, {
       slots: {
@@ -70,6 +70,64 @@ describe('Splitpanes.vue', () => {
     expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('40%')
   })
 
+  it('toggles correctly - with maximized initially', async () => {
+    // mount the component
+    let wrapper = shallowMount(Splitpanes, {
+      slots: {
+        leftPane: '<div />',
+        rightPane: '<div />'
+      },
+      propsData: {
+        before: { size: 0, max: 100 },
+        after: { size: 100, max: 100 },
+        default: { before: 20, after: 80 }
+      }
+    })
+
+    await wrapper.find('.toggle-btn').trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('20%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('80%')
+
+    await wrapper.findAll('.toggle-btn').at(0).trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('0%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('100%')
+
+    await wrapper.find('.toggle-btn').trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('20%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('80%')
+
+    await wrapper.findAll('.toggle-btn').at(1).trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('100%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('0%')
+
+    wrapper = shallowMount(Splitpanes, {
+      slots: {
+        leftPane: '<div />',
+        rightPane: '<div />'
+      },
+      propsData: {
+        before: { size: 100, max: 100 },
+        after: { size: 0, max: 100 }
+      }
+    })
+
+    await wrapper.find('.toggle-btn').trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('50%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('50%')
+
+    await wrapper.findAll('.toggle-btn').at(0).trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('0%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('100%')
+
+    await wrapper.find('.toggle-btn').trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('50%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('50%')
+
+    await wrapper.findAll('.toggle-btn').at(1).trigger('click')
+    expect(wrapper.findAll('.splitpanes-pane').at(0).element.style.width).to.equal('100%')
+    expect(wrapper.findAll('.splitpanes-pane').at(1).element.style.width).to.equal('0%')
+  })
+
   it('drag - vertical', async () => {
     const root = document.createElement('div')
     const place = document.createElement('div')

tests/lib/csv.spec.js

@@ -116,6 +116,33 @@ describe('csv.js', () => {
     await expect(csv.parse(file)).to.be.rejectedWith(err)
   })
 
+  it('parse rejects when getResult failed', async () => {
+    let err
+    try {
+      new Date('invalid date').toISOString()
+    } catch (e) {
+      err = e // get error message, it's different depending on browser
+    }
+    sinon.stub(Papa, 'parse').callsFake((file, config) => {
+      config.complete({
+        data: [
+          [1, new Date('invalid date')],
+          [2, new Date('2023-05-05T15:30:00Z')]
+        ],
+        errors: [],
+        meta: {
+          delimiter: ',',
+          linebreak: '\n',
+          aborted: false,
+          truncated: true
+        }
+      })
+    })
+
+    const file = {}
+    await expect(csv.parse(file)).to.be.rejectedWith(err.message)
+  })
+
   it('prepareForExport', () => {
     const resultSet = {
       columns: ['id', 'name'],

tests/lib/database/sqliteExtensions.spec.js

@@ -160,39 +160,39 @@ describe('SQLite extensions', function () {
   it('supports transitive_closure', async function () {
     const actual = await db.execute(`
       CREATE TABLE node(
-      node_id   INTEGER NOT NULL PRIMARY KEY,
-      parent_id INTEGER,
-      name      VARCHAR(127),
-      FOREIGN KEY (parent_id) REFERENCES node(node_id)
-    );
-    CREATE INDEX node_parent_id_idx ON node(parent_id);
-
-    CREATE VIRTUAL TABLE node_closure USING transitive_closure(
-        tablename    = "node",
-        idcolumn     = "node_id",
-        parentcolumn = "parent_id"
+        node_id   INTEGER NOT NULL PRIMARY KEY,
+        parent_id INTEGER,
+        name      VARCHAR(127),
+        FOREIGN KEY (parent_id) REFERENCES node(node_id)
       );
+      CREATE INDEX node_parent_id_idx ON node(parent_id);
 
-    INSERT INTO node VALUES
-      (1,  NULL, 'tests'),
-      (2,  1,    'lib'),
-      (3,  2,    'database'),
-      (4,  2,    'utils'),
-      (5,  2,    'storedQueries.spec.js'),
-      (6,  3,    '_sql.spec.js'),
-      (7,  3,    '_statements.spec.js'),
-      (8,  3,    'database.spec.js'),
-      (9,  3,    'sqliteExtensions.spec.js'),
-      (10, 4,    'fileIo.spec.js'),
-      (11, 4,    'time.spec.js');
+      CREATE VIRTUAL TABLE node_closure USING transitive_closure(
+          tablename    = "node",
+          idcolumn     = "node_id",
+          parentcolumn = "parent_id"
+        );
 
-      SELECT name
-      FROM node
-      WHERE node_id IN (
-        SELECT nc.id
-        FROM node_closure AS nc
-        WHERE nc.root = 2 AND nc.depth = 2
-      );
+      INSERT INTO node VALUES
+        (1,  NULL, 'tests'),
+        (2,  1,    'lib'),
+        (3,  2,    'database'),
+        (4,  2,    'utils'),
+        (5,  2,    'storedQueries.spec.js'),
+        (6,  3,    '_sql.spec.js'),
+        (7,  3,    '_statements.spec.js'),
+        (8,  3,    'database.spec.js'),
+        (9,  3,    'sqliteExtensions.spec.js'),
+        (10, 4,    'fileIo.spec.js'),
+        (11, 4,    'time.spec.js');
+
+        SELECT name
+        FROM node
+        WHERE node_id IN (
+          SELECT nc.id
+          FROM node_closure AS nc
+          WHERE nc.root = 2 AND nc.depth = 2
+        );
     `)
     expect(actual.values).to.eql({
       name: [
@@ -293,7 +293,7 @@ describe('SQLite extensions', function () {
 
   it('supports decimal', async function () {
     const actual = await db.execute(`
-      select
+      SELECT
         decimal_add(decimal('0.1'), decimal('0.2')) "add",
         decimal_sub(0.2, 0.1) sub,
         decimal_mul(power(2, 69), 2) mul,
@@ -430,4 +430,29 @@ describe('SQLite extensions', function () {
       ]
     })
   })
+
+  it('supports pearson', async function () {
+    const actual = await db.execute(`
+      CREATE TABLE dataset(x REAL, y REAL, z REAL);
+      INSERT INTO dataset VALUES
+        (5,3,3.2),  (5,6,4.3),  (5,9,5.4),
+        (10,3,4),   (10,6,3.8), (10,9,3.6),
+        (15,3,4.8), (15,6,4),   (15,9,3.5);
+
+      SELECT
+        pearson(x, x) xx,
+        pearson(x, y) xy,
+        abs(-0.12666 - pearson(x, z)) < 0.00001 xz,
+        pearson(y, x) yx,
+        pearson(y, y) yy,
+        abs(0.10555 - pearson(y, z))  < 0.00001 yz,
+        abs(-0.12666 - pearson(z, x)) < 0.00001 zx,
+        abs(0.10555 - pearson(z, y))  < 0.00001 zy,
+        pearson(z, z) zz
+      FROM dataset;
+    `)
+    expect(actual.values).to.eql({
+      xx: [1], xy: [0], xz: [1], yx: [0], yy: [1], yz: [1], zx: [1], zy: [1], zz: [1]
+    })
+  })
 })

tests/lib/storedInquiries/storedInquiries.spec.js

@@ -87,14 +87,14 @@ describe('storedInquiries.js', () => {
 
   it('isTabNeedName returns false when the inquiry has a name and is not predefined', () => {
     const tab = {
-      initName: 'foo'
+      name: 'foo'
     }
     expect(storedInquiries.isTabNeedName(tab)).to.equal(false)
   })
 
   it('isTabNeedName returns true when the inquiry has no name and is not predefined', () => {
     const tab = {
-      initName: null,
+      name: null,
       tempName: 'Untitled'
     }
     expect(storedInquiries.isTabNeedName(tab)).to.equal(true)
@@ -102,7 +102,7 @@ describe('storedInquiries.js', () => {
 
   it('isTabNeedName returns true when the inquiry is predefined', () => {
     const tab = {
-      initName: 'foo',
+      name: 'foo',
       isPredefined: true
     }
 
@@ -351,14 +351,13 @@ describe('storedInquiries.js', () => {
       query: 'select * from foo',
       viewType: 'chart',
       viewOptions: [],
-      initName: null,
-      $refs: {
-        dataView: {
-          getOptionsForSave () {
-            return ['chart']
-          }
+      name: null,
+      dataView: {
+        getOptionsForSave () {
+          return ['chart']
         }
       }
+
     }
     const value = storedInquiries.save(tab, 'foo')
     expect(value.id).to.equal(tab.id)
@@ -376,19 +375,18 @@ describe('storedInquiries.js', () => {
       query: 'select * from foo',
       viewType: 'chart',
       viewOptions: [],
-      initName: null,
-      $refs: {
-        dataView: {
-          getOptionsForSave () {
-            return ['chart']
-          }
+      name: null,
+      dataView: {
+        getOptionsForSave () {
+          return ['chart']
         }
       }
+
     }
 
     const first = storedInquiries.save(tab, 'foo')
 
-    tab.initName = 'foo'
+    tab.name = 'foo'
     tab.query = 'select * from foo'
     storedInquiries.save(tab)
     const inquiries = storedInquiries.getStoredInquiries()
@@ -409,12 +407,10 @@ describe('storedInquiries.js', () => {
       query: 'select * from foo',
       viewType: 'chart',
       viewOptions: [],
-      initName: 'foo predefined',
-      $refs: {
-        dataView: {
-          getOptionsForSave () {
-            return ['chart']
-          }
+      name: 'foo predefined',
+      dataView: {
+        getOptionsForSave () {
+          return ['chart']
         }
       },
       isPredefined: true

tests/lib/tab.spec.js

@@ -0,0 +1,189 @@
+import { expect } from 'chai'
+import sinon from 'sinon'
+import Tab from '@/lib/tab.js'
+
+describe('tab.js', () => {
+  it('Creates a tab for new inquiry', () => {
+    const state = {
+      untitledLastIndex: 5
+    }
+
+    const newTab = new Tab(state)
+    expect(newTab).to.include({
+      name: null,
+      tempName: 'Untitled 5',
+      query: undefined,
+      viewOptions: undefined,
+      isPredefined: undefined,
+      viewType: 'chart',
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: false,
+      state: state
+    })
+    expect(newTab.layout).to.include({
+      sqlEditor: 'above',
+      table: 'bottom',
+      dataView: 'hidden'
+    })
+    expect(newTab.id).to.have.lengthOf(21)
+  })
+
+  it('Creates a tab for existing inquiry', () => {
+    const state = {
+      untitledLastIndex: 5
+    }
+
+    const inquiry = {
+      id: 'qwerty',
+      query: 'SELECT * from foo',
+      viewType: 'pivot',
+      viewOptions: 'this is view options object',
+      name: 'Foo inquiry',
+      createdAt: '2022-12-05T18:30:30'
+    }
+
+    const newTab = new Tab(state, inquiry)
+    expect(newTab).to.include({
+      id: 'qwerty',
+      name: 'Foo inquiry',
+      tempName: 'Foo inquiry',
+      query: 'SELECT * from foo',
+      viewOptions: 'this is view options object',
+      isPredefined: undefined,
+      viewType: 'pivot',
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true,
+      state: state
+    })
+    expect(newTab.layout).to.include({
+      sqlEditor: 'above',
+      table: 'bottom',
+      dataView: 'hidden'
+    })
+  })
+
+  it('Set isGettingResults true when execute', async () => {
+    let resolveQuering
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      dbName: 'fooDb',
+      db: {
+        execute: sinon.stub().returns(new Promise(resolve => {
+          resolveQuering = resolve
+        })),
+        refreshSchema: sinon.stub().resolves()
+      }
+    }
+
+    const newTab = new Tab(state, {
+      id: 'qwerty',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'cart',
+      viewOptions: 'this is view options object',
+      name: 'Foo inquiry',
+      createdAt: '2022-12-05T18:30:30'
+    })
+
+    expect(newTab.isGettingResults).to.equal(false)
+    newTab.execute()
+    expect(newTab.isGettingResults).to.equal(true)
+    resolveQuering()
+  })
+
+  it('Updates result with query execution result', async () => {
+    const result = {
+      columns: ['id', 'name'],
+      values: {
+        id: [1, 2],
+        name: ['Harry', 'Drako']
+      }
+    }
+
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      dbName: 'fooDb',
+      db: {
+        execute: sinon.stub().resolves(result),
+        refreshSchema: sinon.stub().resolves()
+      }
+    }
+
+    const newTab = new Tab(state, {
+      id: 'qwerty',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'cart',
+      viewOptions: 'this is view options object',
+      name: 'Foo inquiry',
+      createdAt: '2022-12-05T18:30:30'
+    })
+
+    await newTab.execute()
+    expect(newTab.isGettingResults).to.equal(false)
+    expect(newTab.result).to.eql(result)
+  })
+
+  it('Updates error with query execution error', async () => {
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      dbName: 'fooDb',
+      db: {
+        execute: sinon.stub().rejects(new Error('No such table')),
+        refreshSchema: sinon.stub().resolves()
+      }
+    }
+
+    const newTab = new Tab(state, {
+      id: 'qwerty',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'cart',
+      viewOptions: 'this is view options object',
+      name: 'Foo inquiry',
+      createdAt: '2022-12-05T18:30:30'
+    })
+
+    await newTab.execute()
+    expect(newTab.error.type).to.eql('error')
+    expect(newTab.error.message.toString()).to.equal('Error: No such table')
+  })
+
+  it('Updates schema after query execution', async () => {
+    const result = {
+      columns: ['id', 'name'],
+      values: {
+        id: [],
+        name: []
+      }
+    }
+
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      dbName: 'fooDb',
+      db: {
+        execute: sinon.stub().resolves(result),
+        refreshSchema: sinon.stub().resolves()
+      }
+    }
+
+    const newTab = new Tab(state, {
+      id: 'qwerty',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'cart',
+      viewOptions: 'this is view options object',
+      name: 'Foo inquiry',
+      createdAt: '2022-12-05T18:30:30'
+    })
+
+    await newTab.execute()
+    expect(state.db.refreshSchema.calledOnce).to.equal(true)
+  })
+})

tests/lib/utils/clipboardIo.spec.js

@@ -7,9 +7,9 @@ describe('clipboardIo.js', async () => {
     sinon.restore()
   })
 
-  it('copyCsv', async () => {
+  it('copyText', async () => {
     sinon.stub(navigator.clipboard, 'writeText').resolves(true)
-    await cIo.copyCsv('id\tname\r\n1\t2')
+    await cIo.copyText('id\tname\r\n1\t2')
     expect(navigator.clipboard.writeText.calledOnceWith('id\tname\r\n1\t2'))
   })
 

tests/store/actions.spec.js

@@ -11,7 +11,7 @@ describe('actions', () => {
     }
 
     let id = await addTab({ state })
-    expect(state.tabs[0]).to.eql({
+    expect(state.tabs[0]).to.include({
       id: id,
       name: null,
       tempName: 'Untitled',
@@ -22,7 +22,7 @@ describe('actions', () => {
     expect(state.untitledLastIndex).to.equal(1)
 
     id = await addTab({ state })
-    expect(state.tabs[1]).to.eql({
+    expect(state.tabs[1]).to.include({
       id: id,
       name: null,
       tempName: 'Untitled 1',
@@ -41,14 +41,13 @@ describe('actions', () => {
     const tab = {
       id: 1,
       name: 'test',
-      tempName: null,
       query: 'SELECT * from foo',
       viewType: 'chart',
-      viewOptions: {},
+      viewOptions: 'an object with view options',
       isSaved: true
     }
     await addTab({ state }, tab)
-    expect(state.tabs[0]).to.eql(tab)
+    expect(state.tabs[0]).to.include(tab)
     expect(state.untitledLastIndex).to.equal(0)
   })
 

tests/store/mutations.spec.js

@@ -5,9 +5,10 @@ const {
   updateTab,
   deleteTab,
   setCurrentTabId,
-  setCurrentTab,
   updatePredefinedInquiries,
-  setDb
+  setDb,
+  setLoadingPredefinedInquiries,
+  setPredefinedInquiriesLoaded
 } = mutations
 
 describe('mutations', () => {
@@ -35,8 +36,7 @@ describe('mutations', () => {
       isPredefined: false
     }
 
-    const newTab = {
-      index: 0,
+    const newValues = {
       id: 1,
       name: 'new test',
       query: 'SELECT * from bar',
@@ -49,7 +49,7 @@ describe('mutations', () => {
       tabs: [tab]
     }
 
-    updateTab(state, newTab)
+    updateTab(state, { tab, newValues })
     expect(state.tabs[0]).to.eql({
       id: 1,
       name: 'new test',
@@ -73,8 +73,7 @@ describe('mutations', () => {
       isPredefined: true
     }
 
-    const newTab = {
-      index: 0,
+    const newValues = {
       id: 2,
       name: 'new test',
       query: 'SELECT * from bar',
@@ -88,7 +87,7 @@ describe('mutations', () => {
       currentTabId: 1
     }
 
-    updateTab(state, newTab)
+    updateTab(state, { tab, newValues })
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.currentTabId).to.equal(2)
     expect(state.tabs[0].id).to.equal(2)
@@ -109,8 +108,7 @@ describe('mutations', () => {
       isSaved: false
     }
 
-    const newTab = {
-      index: 0,
+    const newValues = {
       id: 1,
       name: 'new test'
     }
@@ -119,7 +117,7 @@ describe('mutations', () => {
       tabs: [tab]
     }
 
-    updateTab(state, newTab)
+    updateTab(state, { tab, newValues })
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(1)
     expect(state.tabs[0].name).to.equal('new test')
@@ -139,8 +137,7 @@ describe('mutations', () => {
       isPredefined: true
     }
 
-    const newTab = {
-      index: 0,
+    const newValues = {
       isSaved: false
     }
 
@@ -148,7 +145,7 @@ describe('mutations', () => {
       tabs: [tab]
     }
 
-    updateTab(state, newTab)
+    updateTab(state, { tab, newValues })
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(1)
     expect(state.tabs[0].name).to.equal('test')
@@ -179,13 +176,15 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2],
-      currentTabId: 1
+      currentTabId: 1,
+      currentTab: tab1
     }
 
-    deleteTab(state, 0)
+    deleteTab(state, tab1)
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(2)
     expect(state.currentTabId).to.equal(2)
+    expect(state.currentTab).to.eql(tab2)
   })
 
   it('deleteTab - opened, last', () => {
@@ -211,13 +210,15 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2],
-      currentTabId: 2
+      currentTabId: 2,
+      currentTab: tab2
     }
 
-    deleteTab(state, 1)
+    deleteTab(state, tab2)
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(1)
     expect(state.currentTabId).to.equal(1)
+    expect(state.currentTab).to.eql(tab1)
   })
 
   it('deleteTab - opened, in the middle', () => {
@@ -253,14 +254,16 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2, tab3],
-      currentTabId: 2
+      currentTabId: 2,
+      currentTab: tab2
     }
 
-    deleteTab(state, 1)
+    deleteTab(state, tab2)
     expect(state.tabs).to.have.lengthOf(2)
     expect(state.tabs[0].id).to.equal(1)
     expect(state.tabs[1].id).to.equal(3)
     expect(state.currentTabId).to.equal(3)
+    expect(state.currentTab).to.eql(tab3)
   })
 
   it('deleteTab - opened, single', () => {
@@ -276,48 +279,19 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1],
-      currentTabId: 1
+      currentTabId: 1,
+      currentTab: tab1
     }
 
-    deleteTab(state, 0)
+    deleteTab(state, tab1)
     expect(state.tabs).to.have.lengthOf(0)
     expect(state.currentTabId).to.equal(null)
-  })
-
-  it('deleteTab - not opened', () => {
-    const tab1 = {
-      id: 1,
-      name: 'foo',
-      tempName: null,
-      query: 'SELECT * from foo',
-      viewType: 'chart',
-      viewOptions: {},
-      isSaved: true
-    }
-
-    const tab2 = {
-      id: 2,
-      name: 'bar',
-      tempName: null,
-      query: 'SELECT * from bar',
-      viewType: 'chart',
-      viewOptions: {},
-      isSaved: true
-    }
-
-    const state = {
-      tabs: [tab1, tab2],
-      currentTabId: 1
-    }
-
-    deleteTab(state, 1)
-    expect(state.tabs).to.have.lengthOf(1)
-    expect(state.tabs[0].id).to.equal(1)
-    expect(state.currentTabId).to.equal(1)
+    expect(state.currentTab).to.equal(null)
   })
 
   it('setCurrentTabId', () => {
     const state = {
+      tabs: [{ id: 1 }, { id: 2 }],
       currentTabId: 1
     }
 
@@ -325,15 +299,6 @@ describe('mutations', () => {
     expect(state.currentTabId).to.equal(2)
   })
 
-  it('setCurrentTab', () => {
-    const state = {
-      currentTab: { id: 1 }
-    }
-
-    setCurrentTab(state, { id: 2 })
-    expect(state.currentTab).to.eql({ id: 2 })
-  })
-
   it('updatePredefinedInquiries - single', () => {
     const inquiry = {
       id: 1,
@@ -377,4 +342,22 @@ describe('mutations', () => {
     updatePredefinedInquiries(state, inquiries)
     expect(state.predefinedInquiries).to.eql(inquiries)
   })
+
+  it('setLoadingPredefinedInquiries', () => {
+    const state = {
+      loadingPredefinedInquiries: false
+    }
+
+    setLoadingPredefinedInquiries(state, true)
+    expect(state.loadingPredefinedInquiries).to.equal(true)
+  })
+
+  it('setPredefinedInquiriesLoaded', () => {
+    const state = {
+      predefinedInquiriesLoaded: false
+    }
+
+    setPredefinedInquiriesLoaded(state, true)
+    expect(state.predefinedInquiriesLoaded).to.equal(true)
+  })
 })

tests/views/LoadView.spec.js

@@ -0,0 +1,147 @@
+import { expect } from 'chai'
+import sinon from 'sinon'
+import { mount } from '@vue/test-utils'
+import Vuex from 'vuex'
+import LoadView from '@/views/LoadView'
+import fu from '@/lib/utils/fileIo'
+import database from '@/lib/database'
+import realMutations from '@/store/mutations'
+import realActions from '@/store/actions'
+import flushPromises from 'flush-promises'
+import Tab from '@/lib/tab'
+
+describe('LoadView.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('Loads db and inquiries and redirects to workspace if no errors', async () => {
+    const state = {
+      tabs: []
+    }
+    const mutations = {
+      setCurrentTabId: sinon.stub().callsFake(realMutations.setCurrentTabId),
+      setDb: sinon.stub().callsFake(realMutations.setDb)
+    }
+    const actions = {
+      addTab: sinon.stub().callsFake(realActions.addTab)
+    }
+    const store = new Vuex.Store({ state, mutations, actions })
+    const $route = {
+      path: '/workspace',
+      query: {
+        data_url: 'https://my-url/test.db',
+        data_format: 'sqlite',
+        inquiry_url: 'https://my-url/test_inquiries.json',
+        inquiry_id: [1],
+        maximize: 'dataView'
+      }
+    }
+
+    const $router = { push: sinon.stub() }
+
+    const readFile = sinon.stub(fu, 'readFile')
+    const dataRes = new Response()
+    dataRes.blob = sinon.stub().resolves({})
+    readFile.onCall(0).returns(Promise.resolve(dataRes))
+
+    const inquiriesRes = new Response()
+    inquiriesRes.json = sinon.stub().resolves({
+      version: 2,
+      inquiries: [{ id: 1, name: 'foo' }, { id: 2, name: 'bar' }]
+    })
+    readFile.onCall(1).returns(Promise.resolve(inquiriesRes))
+    const db = {
+      loadDb: sinon.stub().resolves()
+    }
+    sinon.stub(database, 'getNewDatabase').returns(db)
+    Tab.prototype.execute = sinon.stub()
+
+    const wrapper = mount(LoadView, {
+      store,
+      mocks: { $route, $router },
+      stubs: ['router-link']
+    })
+
+    await flushPromises()
+
+    // DB file is read
+    expect(fu.readFile.firstCall.args[0]).to.equal('https://my-url/test.db')
+
+    // Db is loaded
+    expect(db.loadDb.firstCall.args[0]).to.equal(await dataRes.blob.returnValues[0])
+
+    // Inquiries file is read
+    expect(fu.readFile.secondCall.args[0])
+      .to.equal('https://my-url/test_inquiries.json')
+
+    // Tab for inquiry is created
+    expect(actions.addTab.calledOnce).to.equal(true)
+    expect(actions.addTab.firstCall.args[1]).eql({
+      id: undefined,
+      name: 'foo',
+      layout: {
+        dataView: 'bottom',
+        sqlEditor: 'hidden',
+        table: 'above'
+      },
+      maximize: 'dataView'
+    })
+    const executedTab = Tab.prototype.execute.firstCall.thisValue
+    expect(executedTab.tempName).to.equal('foo')
+    expect(wrapper.find('#open-workspace-btn').exists()).to.equal(false)
+    expect($router.push.called).to.equal(true)
+  })
+
+  it('Doesn\'t redirect and show the button if there is an error', async () => {
+    const state = {
+      tabs: []
+    }
+    const mutations = {
+      setCurrentTabId: sinon.stub().callsFake(realMutations.setCurrentTabId),
+      setDb: sinon.stub().callsFake(realMutations.setDb)
+    }
+    const actions = {
+      addTab: sinon.stub().callsFake(realActions.addTab)
+    }
+    const store = new Vuex.Store({ state, mutations, actions })
+    const $route = {
+      path: '/workspace',
+      query: {
+        data_url: 'https://my-url/test.db',
+        data_format: 'sqlite',
+        inquiry_url: 'https://my-url/test_inquiries.json',
+        inquiry_id: [1],
+        maximize: 'dataView'
+      }
+    }
+
+    const $router = { push: sinon.stub() }
+
+    const readFile = sinon.stub(fu, 'readFile')
+    const dataRes = new Response()
+    dataRes.blob = sinon.stub().rejects(new Error('Something is wrong'))
+    readFile.onCall(0).returns(Promise.resolve(dataRes))
+
+    const inquiriesRes = new Response()
+    inquiriesRes.json = sinon.stub().resolves({
+      version: 2,
+      inquiries: [{ id: 1 }]
+    })
+    readFile.onCall(1).returns(Promise.resolve(inquiriesRes))
+    sinon.stub(database, 'getNewDatabase').returns({
+      loadDb: sinon.stub().resolves()
+    })
+
+    const wrapper = mount(LoadView, {
+      store,
+      mocks: { $route, $router },
+      stubs: ['router-link']
+    })
+
+    await flushPromises()
+    expect(wrapper.find('#open-workspace-btn').exists()).to.equal(true)
+    expect($router.push.called).to.equal(false)
+    expect(wrapper.find('#logs').text()).to.include('Something is wrong')
+  })
+})

tests/views/Main/Inquiries/Inquiries.spec.js

@@ -19,7 +19,9 @@ describe('Inquiries.vue', () => {
       predefinedInquiries: []
     }
     const mutations = {
-      updatePredefinedInquiries: sinon.stub()
+      setPredefinedInquiriesLoaded: sinon.stub(),
+      updatePredefinedInquiries: sinon.stub(),
+      setLoadingPredefinedInquiries: sinon.stub()
     }
     const store = new Vuex.Store({ state, mutations })
     const wrapper = shallowMount(Inquiries, { store })
@@ -327,6 +329,7 @@ describe('Inquiries.vue', () => {
     sinon.stub(storedInquiries, 'getStoredInquiries').returns([inquiryInStorage])
 
     const state = {
+      tabs: [],
       predefinedInquiries: []
     }
     const actions = { addTab: sinon.stub().resolves(1) }

tests/views/Main/MainMenu.spec.js

@@ -45,7 +45,7 @@ describe('MainMenu.vue', () => {
   it('Save is not visible if there is no tabs', () => {
     const state = {
       currentTab: null,
-      tabs: [{}],
+      tabs: [],
       db: {}
     }
     const store = new Vuex.Store({ state })
@@ -62,13 +62,15 @@ describe('MainMenu.vue', () => {
   })
 
   it('Save is disabled if current tab.isSaved is true', async () => {
+    const tab = {
+      id: 1,
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const store = new Vuex.Store({ state })
@@ -83,17 +85,19 @@ describe('MainMenu.vue', () => {
     expect(wrapper.find('#save-btn').element.disabled).to.equal(false)
 
     await vm.$set(state.tabs[0], 'isSaved', true)
+    await vm.$nextTick()
     expect(wrapper.find('#save-btn').element.disabled).to.equal(true)
   })
 
   it('Creates a tab', async () => {
+    const tab = {
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const newInquiryId = 1
@@ -121,13 +125,14 @@ describe('MainMenu.vue', () => {
   })
 
   it('Creates a tab and redirects to workspace', async () => {
+    const tab = {
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const newInquiryId = 1
@@ -156,13 +161,14 @@ describe('MainMenu.vue', () => {
 
   it('Ctrl R calls currentTab.execute if running is enabled and route.path is "/workspace"',
     async () => {
+      const tab = {
+        query: 'SELECT * FROM foo',
+        execute: sinon.stub(),
+        isSaved: false
+      }
       const state = {
-        currentTab: {
-          query: 'SELECT * FROM foo',
-          execute: sinon.stub(),
-          tabIndex: 0
-        },
-        tabs: [{ isSaved: false }],
+        currentTab: tab,
+        tabs: [tab],
         db: {}
       }
       const store = new Vuex.Store({ state })
@@ -201,13 +207,14 @@ describe('MainMenu.vue', () => {
 
   it('Ctrl Enter calls currentTab.execute if running is enabled and route.path is "/workspace"',
     async () => {
+      const tab = {
+        query: 'SELECT * FROM foo',
+        execute: sinon.stub(),
+        isSaved: false
+      }
       const state = {
-        currentTab: {
-          query: 'SELECT * FROM foo',
-          execute: sinon.stub(),
-          tabIndex: 0
-        },
-        tabs: [{ isSaved: false }],
+        currentTab: tab,
+        tabs: [tab],
         db: {}
       }
       const store = new Vuex.Store({ state })
@@ -245,13 +252,14 @@ describe('MainMenu.vue', () => {
     })
 
   it('Ctrl B calls createNewInquiry', async () => {
+    const tab = {
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const store = new Vuex.Store({ state })
@@ -280,13 +288,14 @@ describe('MainMenu.vue', () => {
 
   it('Ctrl S calls checkInquiryBeforeSave if the tab is unsaved and route path is /workspace',
     async () => {
+      const tab = {
+        query: 'SELECT * FROM foo',
+        execute: sinon.stub(),
+        isSaved: false
+      }
       const state = {
-        currentTab: {
-          query: 'SELECT * FROM foo',
-          execute: sinon.stub(),
-          tabIndex: 0
-        },
-        tabs: [{ isSaved: false }],
+        currentTab: tab,
+        tabs: [tab],
         db: {}
       }
       const store = new Vuex.Store({ state })
@@ -325,13 +334,16 @@ describe('MainMenu.vue', () => {
 
   it('Saves the inquiry when no need the new name',
     async () => {
+      const tab = {
+        id: 1,
+        name: 'foo',
+        query: 'SELECT * FROM foo',
+        execute: sinon.stub(),
+        isSaved: false
+      }
       const state = {
-        currentTab: {
-          query: 'SELECT * FROM foo',
-          execute: sinon.stub(),
-          tabIndex: 0
-        },
-        tabs: [{ id: 1, name: 'foo', isSaved: false }],
+        currentTab: tab,
+        tabs: [tab],
         db: {}
       }
       const mutations = {
@@ -364,13 +376,15 @@ describe('MainMenu.vue', () => {
 
       // check that the tab was updated
       expect(mutations.updateTab.calledOnceWith(state, sinon.match({
-        index: 0,
-        name: 'foo',
-        id: 1,
-        query: 'SELECT * FROM foo',
-        viewType: 'chart',
-        viewOptions: [],
-        isSaved: true
+        tab,
+        newValues: {
+          name: 'foo',
+          id: 1,
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: [],
+          isSaved: true
+        }
       }))).to.equal(true)
 
       // check that 'inquirySaved' event was triggered on $root
@@ -378,13 +392,17 @@ describe('MainMenu.vue', () => {
     })
 
   it('Shows en error when the new name is needed but not specifyied', async () => {
+    const tab = {
+      id: 1,
+      name: null,
+      tempName: 'Untitled',
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ id: 1, name: null, tempName: 'Untitled', isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const mutations = {
@@ -424,13 +442,17 @@ describe('MainMenu.vue', () => {
   })
 
   it('Saves the inquiry with a new name', async () => {
+    const tab = {
+      id: 1,
+      name: null,
+      tempName: 'Untitled',
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ id: 1, name: null, tempName: 'Untitled', isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const mutations = {
@@ -475,13 +497,15 @@ describe('MainMenu.vue', () => {
 
     // check that the tab was updated
     expect(mutations.updateTab.calledOnceWith(state, sinon.match({
-      index: 0,
-      name: 'foo',
-      id: 1,
-      query: 'SELECT * FROM foo',
-      viewType: 'chart',
-      viewOptions: [],
-      isSaved: true
+      tab: tab,
+      newValues: {
+        name: 'foo',
+        id: 1,
+        query: 'SELECT * FROM foo',
+        viewType: 'chart',
+        viewOptions: [],
+        isSaved: true
+      }
     }))).to.equal(true)
 
     // check that 'inquirySaved' event was triggered on $root
@@ -489,23 +513,26 @@ describe('MainMenu.vue', () => {
   })
 
   it('Saves a predefined inquiry with a new name', async () => {
-    const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0,
-        isPredefined: true,
-        result: {
-          columns: ['id', 'name'],
-          values: [
-            [1, 'Harry Potter'],
-            [2, 'Drako Malfoy']
-          ]
-        },
-        viewType: 'chart',
-        viewOptions: []
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isPredefined: true,
+      result: {
+        columns: ['id', 'name'],
+        values: [
+          [1, 'Harry Potter'],
+          [2, 'Drako Malfoy']
+        ]
       },
-      tabs: [{ id: 1, name: 'foo', isSaved: false, isPredefined: true }],
+      viewType: 'chart',
+      viewOptions: [],
+      isSaved: false
+    }
+    const state = {
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const mutations = {
@@ -553,13 +580,15 @@ describe('MainMenu.vue', () => {
 
     // check that the tab was updated
     expect(mutations.updateTab.calledOnceWith(state, sinon.match({
-      index: 0,
-      name: 'bar',
-      id: 2,
-      query: 'SELECT * FROM foo',
-      viewType: 'chart',
-      viewOptions: [],
-      isSaved: true
+      tab,
+      newValues: {
+        name: 'bar',
+        id: 2,
+        query: 'SELECT * FROM foo',
+        viewType: 'chart',
+        viewOptions: [],
+        isSaved: true
+      }
     }))).to.equal(true)
 
     // check that 'inquirySaved' event was triggered on $root
@@ -580,13 +609,17 @@ describe('MainMenu.vue', () => {
   })
 
   it('Cancel saving', async () => {
+    const tab = {
+      id: 1,
+      name: null,
+      tempName: 'Untitled',
+      query: 'SELECT * FROM foo',
+      execute: sinon.stub(),
+      isSaved: false
+    }
     const state = {
-      currentTab: {
-        query: 'SELECT * FROM foo',
-        execute: sinon.stub(),
-        tabIndex: 0
-      },
-      tabs: [{ id: 1, name: null, tempName: 'Untitled', isSaved: false }],
+      currentTab: tab,
+      tabs: [tab],
       db: {}
     }
     const mutations = {

tests/views/Main/Workspace/Tabs/Tab/DataView/DataView.spec.js

@@ -54,6 +54,10 @@ describe('DataView.vue', () => {
     const pivot = wrapper.findComponent({ name: 'pivot' }).vm
     sinon.spy(pivot, 'saveAsSvg')
 
+    // Switch to Custom Chart renderer
+    pivot.pivotOptions.rendererName = 'Custom chart'
+    await pivot.$nextTick()
+
     // Export to svg
     await svgBtn.trigger('click')
     expect(pivot.saveAsSvg.calledOnce).to.equal(true)

tests/views/Main/Workspace/Tabs/Tab/RunResult.spec.js

@@ -1,155 +0,0 @@
-import { expect } from 'chai'
-import { mount, createWrapper } from '@vue/test-utils'
-import RunResult from '@/views/Main/Workspace/Tabs/Tab/RunResult'
-import csv from '@/lib/csv'
-import sinon from 'sinon'
-
-describe('RunResult.vue', () => {
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  it('shows alert when ClipboardItem is not supported', async () => {
-    const ClipboardItem = window.ClipboardItem
-    delete window.ClipboardItem
-    sinon.spy(window, 'alert')
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    expect(
-      window.alert.calledOnceWith(
-        "Your browser doesn't support copying into the clipboard. " +
-        'If you use Firefox you can enable it ' +
-        'by setting dom.events.asyncClipboard.clipboardItem to true.'
-      )
-    ).to.equal(true)
-
-    window.ClipboardItem = ClipboardItem
-  })
-
-  it('copy to clipboard more than 1 sec', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(5000)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // The dialog is shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
-
-    // ... with Building message...
-    expect(wrapper.find('.dialog-body').text()).to.equal('Building CSV...')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // The dialog is shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
-
-    // ... with Ready message...
-    expect(wrapper.find('.dialog-body').text()).to.equal('CSV is ready')
-
-    // Click copy
-    await wrapper.find('.dialog-buttons-container button.primary').trigger('click')
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-  })
-
-  it('copy to clipboard less than 1 sec', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.spy(wrapper.vm, 'copyToClipboard')
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(500)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-    // copyToClipboard is called
-    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(true)
-  })
-
-  it('cancel long copy', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.spy(wrapper.vm, 'copyToClipboard')
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(5000)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // Click cancel
-    await wrapper.find('.dialog-buttons-container button.secondary').trigger('click')
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-    // copyToClipboard is not called
-    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(false)
-  })
-})

tests/views/Main/Workspace/Tabs/Tab/RunResult/Record.spec.js

@@ -0,0 +1,116 @@
+import { expect } from 'chai'
+import { mount } from '@vue/test-utils'
+import Record from '@/views/Main/Workspace/Tabs/Tab/RunResult/Record'
+
+describe('Record.vue', () => {
+  it('shows record with selected cell', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        },
+        rowIndex: 1,
+        selectedColumnIndex: 1
+      }
+    })
+
+    const rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(2)
+    expect(rows.at(0).findAll('th').at(0).text()).to.equals('id')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('2')
+    expect(rows.at(1).findAll('th').at(0).text()).to.equals('name')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('bar')
+
+    const selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('bar')
+  })
+
+  it('switches to the next or previous row', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2, 3],
+            name: ['foo', 'bar', 'baz']
+          }
+        },
+        rowIndex: 0,
+        selectedColumnIndex: 0
+      }
+    })
+
+    let rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(2)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    let selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+
+    await wrapper.find('.next').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('2')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('bar')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('2')
+
+    await wrapper.find('.prev').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+
+    await wrapper.find('.last').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('3')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('baz')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('3')
+
+    await wrapper.find('.first').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+  })
+
+  it('removes selection when click on selected cell', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        },
+        rowIndex: 1,
+        selectedColumnIndex: 1
+      }
+    })
+
+    const selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    await selectedCell.trigger('click')
+
+    const selectedCellAfterClick = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCellAfterClick.exists()).to.equals(false)
+  })
+})

tests/views/Main/Workspace/Tabs/Tab/RunResult/RunResult.spec.js

@@ -0,0 +1,348 @@
+import { expect } from 'chai'
+import { mount, createWrapper } from '@vue/test-utils'
+import RunResult from '@/views/Main/Workspace/Tabs/Tab/RunResult'
+import csv from '@/lib/csv'
+import sinon from 'sinon'
+
+describe('RunResult.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('shows alert when ClipboardItem is not supported', async () => {
+    const ClipboardItem = window.ClipboardItem
+    delete window.ClipboardItem
+    sinon.spy(window, 'alert')
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    expect(
+      window.alert.calledOnceWith(
+        "Your browser doesn't support copying into the clipboard. " +
+        'If you use Firefox you can enable it ' +
+        'by setting dom.events.asyncClipboard.clipboardItem to true.'
+      )
+    ).to.equal(true)
+
+    window.ClipboardItem = ClipboardItem
+  })
+
+  it('copy to clipboard more than 1 sec', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(5000)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // The dialog is shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
+
+    // ... with Building message...
+    expect(wrapper.find('.dialog-body').text()).to.equal('Building CSV...')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // The dialog is shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
+
+    // ... with Ready message...
+    expect(wrapper.find('.dialog-body').text()).to.equal('CSV is ready')
+
+    // Click copy
+    await wrapper.find('.dialog-buttons-container button.primary').trigger('click')
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+  })
+
+  it('copy to clipboard less than 1 sec', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.spy(wrapper.vm, 'copyToClipboard')
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(500)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+    // copyToClipboard is called
+    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(true)
+  })
+
+  it('cancel long copy', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.spy(wrapper.vm, 'copyToClipboard')
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(5000)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // Click cancel
+    await wrapper.find('.dialog-buttons-container button.secondary').trigger('click')
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+    // copyToClipboard is not called
+    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(false)
+  })
+
+  it('shows value of selected cell - result set', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    /*
+    Result set:
+    |1 | foo
+    +--+-----
+    |2 | bar
+    */
+
+    // Click on '1' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(0).findAll('td').at(0).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Go to 'foo' with right arrow key
+    await wrapper.find('table').trigger('keydown.right')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Go to 'bar' with down arrow key
+    await wrapper.find('table').trigger('keydown.down')
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Go to '2' with left arrow key
+    await wrapper.find('table').trigger('keydown.left')
+    expect(wrapper.find('.value-body').text()).to.equals('2')
+
+    // Go to '1' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Click on 'bar' cell
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Click on 'bar' cell again
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-viewer-container .table-preview').text())
+      .to.equals('No cell selected to view')
+  })
+
+  it('shows value of selected cell - record view', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    // Go to record view
+    const vierRecordBtn = createWrapper(
+      wrapper.findComponent({ name: 'rowIcon' }).vm.$parent
+    )
+    await vierRecordBtn.trigger('click')
+
+    /*
+    Record 1:
+    |id   | 1
+    +-----+-----
+    |name | foo
+
+    Record 2:
+    |id   | 2
+    +-----+-----
+    |name | bar
+
+    */
+
+    // Click '1' is selected by default
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Go to 'foo' with down arrow key
+    await wrapper.find('table').trigger('keydown.down')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Go to next record
+    await wrapper.find('.icon-btn.next').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Go to '2' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('2')
+
+    // Go to prev record
+    await wrapper.find('.icon-btn.prev').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Click on 'foo' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(1).find('td').trigger('click')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Click on 'foo' cell again
+    await rows.at(1).find('td').trigger('click')
+    expect(wrapper.find('.value-viewer-container .table-preview').text())
+      .to.equals('No cell selected to view')
+  })
+
+  it('keeps selected cell when switch between record and regular view', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [...Array(30)].map((x, i) => i),
+            name: [...Array(30)].map((x, i) => `name-${i}`)
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    // Click on 'name-1' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('name-1')
+
+    // Go to record view
+    const vierRecordBtn = createWrapper(
+      wrapper.findComponent({ name: 'rowIcon' }).vm.$parent
+    )
+    await vierRecordBtn.trigger('click')
+
+    // 'name-1' is selected
+    expect(wrapper.find('.value-body').text()).to.equals('name-1')
+    let selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('name-1')
+
+    // Go to last record
+    await wrapper.find('.icon-btn.last').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('name-29')
+
+    // Go to '29' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('29')
+
+    // Go to regular view
+    await vierRecordBtn.trigger('click')
+
+    // '29' is selected
+    expect(wrapper.find('.value-body').text()).to.equals('29')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('29')
+  })
+})

tests/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer.spec.js

@@ -0,0 +1,44 @@
+import { expect } from 'chai'
+import { mount } from '@vue/test-utils'
+import ValueViewer from '@/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer'
+import sinon from 'sinon'
+
+describe('ValueViewer.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('shows value in text mode', async () => {
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+  })
+
+  it('shows error in json mode if the value is not json', async () => {
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+    await wrapper.find('button.json').trigger('click')
+    expect(wrapper.find('.value-body').text()).to.equals('Can\'t parse JSON.')
+  })
+
+  it('copy to clipboard', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+
+    await wrapper.find('button.copy').trigger('click')
+
+    expect(window.navigator.clipboard.writeText.calledOnceWith('foo'))
+      .to.equal(true)
+  })
+})

tests/views/Main/Workspace/Tabs/Tab/Tab.spec.js

@@ -31,13 +31,23 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewType: 'chart',
-        initViewOptions: [],
-        tabIndex: 0,
-        isPredefined: false
+        tab: {
+          id: 1,
+          name: 'foo',
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isPredefined: false,
+          result: null,
+          isGettingResults: false,
+          error: null,
+          time: 0
+        }
       }
     })
 
@@ -60,7 +70,23 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1
+        tab: {
+          id: 1,
+          name: 'foo',
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isPredefined: false,
+          result: null,
+          isGettingResults: false,
+          error: null,
+          time: 0
+        }
       }
     })
     expect(wrapper.find('.tab-content-container').isVisible()).to.equal(false)
@@ -79,40 +105,51 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1
+        tab: {
+          id: 1,
+          name: 'foo',
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isPredefined: false,
+          result: null,
+          isGettingResults: false,
+          error: null,
+          time: 0
+        }
       }
     })
 
     expect(wrapper.find('.tab-content-container').isVisible()).to.equal(false)
   })
 
-  it('Calls setCurrentTab when becomes active', async () => {
-    // mock store state
-    const state = {
-      currentTabId: 0
-    }
-    sinon.spy(mutations, 'setCurrentTab')
-    const store = new Vuex.Store({ state, mutations })
-
-    // mount the component
-    const wrapper = mount(Tab, {
-      store,
-      stubs: ['chart'],
-      propsData: {
-        id: 1
-      }
-    })
-
-    state.currentTabId = 1
-    await wrapper.vm.$nextTick()
-    expect(mutations.setCurrentTab.calledOnceWith(state, wrapper.vm)).to.equal(true)
-  })
-
   it('Update tab state when a query is changed', async () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'SELECT * FROM foo', chart: [], isSaved: true }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isPredefined: false,
+          result: null,
+          isGettingResults: false,
+          error: null,
+          time: 0,
+          isSaved: true
+        }
       ],
       currentTabId: 1
     }
@@ -124,13 +161,7 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab: state.tabs[0]
       }
     })
     await wrapper.findComponent({ name: 'SqlEditor' }).vm.$emit('input', ' limit 100')
@@ -141,7 +172,24 @@ describe('Tab.vue', () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'SELECT * FROM foo', chart: [], isSaved: true }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'SELECT * FROM foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isPredefined: false,
+          result: null,
+          isGettingResults: false,
+          error: null,
+          time: 0,
+          isSaved: true
+        }
       ],
       currentTabId: 1
     }
@@ -153,13 +201,7 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab: state.tabs[0]
       }
     })
     await wrapper.findComponent({ name: 'DataView' }).vm.$emit('update')
@@ -169,29 +211,38 @@ describe('Tab.vue', () => {
   it('Shows .result-in-progress message when executing query', async () => {
     // mock store state
     const state = {
-      currentTabId: 1,
-      db: {
-        execute () { return new Promise(() => {}) }
-      }
+      currentTabId: 1
     }
 
     const store = new Vuex.Store({ state, mutations })
     // mount the component
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
     const wrapper = mount(Tab, {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab
       }
     })
 
-    wrapper.vm.execute()
+    tab.isGettingResults = true
     await wrapper.vm.$nextTick()
     expect(wrapper.find('.run-result-panel .result-in-progress').isVisible()).to.equal(true)
   })
@@ -199,30 +250,42 @@ describe('Tab.vue', () => {
   it('Shows error when executing query ends with error', async () => {
     // mock store state
     const state = {
-      currentTabId: 1,
-      db: {
-        execute: sinon.stub().rejects(new Error('There is no table foo')),
-        refreshSchema: sinon.stub().resolves()
-      }
+      currentTabId: 1
     }
 
     const store = new Vuex.Store({ state, mutations })
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
     // mount the component
     const wrapper = mount(Tab, {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab
       }
     })
 
-    await wrapper.vm.execute()
+    tab.error = {
+      type: 'error',
+      message: 'There is no table foo'
+    }
+    await wrapper.vm.$nextTick()
     expect(wrapper.find('.run-result-panel .result-before').isVisible()).to.equal(false)
     expect(wrapper.find('.run-result-panel .result-in-progress').exists()).to.equal(false)
     expect(wrapper.findComponent({ name: 'logs' }).isVisible()).to.equal(true)
@@ -239,11 +302,26 @@ describe('Tab.vue', () => {
     }
     // mock store state
     const state = {
-      currentTabId: 1,
-      db: {
-        execute: sinon.stub().resolves(result),
-        refreshSchema: sinon.stub().resolves()
-      }
+      currentTabId: 1
+    }
+
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
     }
 
     const store = new Vuex.Store({ state, mutations })
@@ -253,83 +331,50 @@ describe('Tab.vue', () => {
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab
       }
     })
 
-    await wrapper.vm.execute()
+    tab.result = result
+    await wrapper.vm.$nextTick()
     expect(wrapper.find('.run-result-panel .result-before').isVisible()).to.equal(false)
     expect(wrapper.find('.run-result-panel .result-in-progress').exists()).to.equal(false)
     expect(wrapper.findComponent({ name: 'logs' }).exists()).to.equal(false)
     expect(wrapper.findComponent({ name: 'SqlTable' }).vm.dataSet).to.eql(result)
   })
 
-  it('Updates schema after query execution', async () => {
-    const result = {
-      columns: ['id', 'name'],
-      values: {
-        id: [],
-        name: []
-      }
-    }
-
-    // mock store state
-    const state = {
-      currentTabId: 1,
-      dbName: 'fooDb',
-      db: {
-        execute: sinon.stub().resolves(result),
-        refreshSchema: sinon.stub().resolves()
-      }
-    }
-
-    const store = new Vuex.Store({ state, mutations })
-
-    // mount the component
-    const wrapper = mount(Tab, {
-      store,
-      stubs: ['chart'],
-      propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
-      }
-    })
-
-    await wrapper.vm.execute()
-    expect(state.db.refreshSchema.calledOnce).to.equal(true)
-  })
-
   it('Switches views', async () => {
     const state = {
-      currentTabId: 1,
-      db: {}
+      currentTabId: 1
     }
 
     const store = new Vuex.Store({ state, mutations })
 
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
+
     const wrapper = mount(Tab, {
       attachTo: place,
       store,
       stubs: ['chart'],
       propsData: {
-        id: 1,
-        initName: 'foo',
-        initQuery: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
-        initViewOptions: [],
-        initViewType: 'chart',
-        tabIndex: 0,
-        isPredefined: false
+        tab
       }
     })
 
@@ -361,4 +406,119 @@ describe('Tab.vue', () => {
     expect(wrapper.find('.above .sql-editor-panel').exists()).to.equal(true)
     expect(wrapper.find('.bottomPane .run-result-panel').exists()).to.equal(true)
   })
+
+  it('Maximize top panel if maximized panel is above', () => {
+    const state = {
+      currentTabId: 1
+    }
+    const store = new Vuex.Store({ state, mutations })
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      maximize: 'sqlEditor',
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
+
+    const wrapper = mount(Tab, {
+      attachTo: place,
+      store,
+      stubs: ['chart'],
+      propsData: {
+        tab
+      }
+    })
+
+    expect(wrapper.find('.above').element.parentElement.style.height)
+      .to.equal('100%')
+  })
+
+  it('Maximize bottom panel if maximized panel is below', () => {
+    const state = {
+      currentTabId: 1
+    }
+    const store = new Vuex.Store({ state, mutations })
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      maximize: 'table',
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
+
+    const wrapper = mount(Tab, {
+      attachTo: place,
+      store,
+      stubs: ['chart'],
+      propsData: {
+        tab
+      }
+    })
+
+    expect(wrapper.find('.bottomPane').element.parentElement.style.height)
+      .to.equal('100%')
+  })
+
+  it('Panel size is 50 is nothing to maximize', () => {
+    const state = {
+      currentTabId: 1
+    }
+    const store = new Vuex.Store({ state, mutations })
+    const tab = {
+      id: 1,
+      name: 'foo',
+      query: 'SELECT * FROM foo; CREATE TABLE bar(a,b);',
+      viewType: 'chart',
+      viewOptions: {},
+      layout: {
+        sqlEditor: 'above',
+        table: 'bottom',
+        dataView: 'hidden'
+      },
+      isPredefined: false,
+      result: null,
+      isGettingResults: false,
+      error: null,
+      time: 0,
+      isSaved: true
+    }
+
+    const wrapper = mount(Tab, {
+      attachTo: place,
+      store,
+      stubs: ['chart'],
+      propsData: {
+        tab
+      }
+    })
+
+    expect(wrapper.find('.above').element.parentElement.style.height)
+      .to.equal('50%')
+    expect(wrapper.find('.bottomPane').element.parentElement.style.height)
+      .to.equal('50%')
+  })
 })

tests/views/Main/Workspace/Tabs/Tabs.spec.js

@@ -94,8 +94,33 @@ describe('Tabs.vue', () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'select * from foo', chart: [], isSaved: true },
-        { id: 2, name: null, tempName: 'Untitled', query: '', chart: [], isSaved: false }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'select * from foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: true
+        },
+        {
+          id: 2,
+          name: null,
+          tempName: 'Untitled',
+          query: '',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: false
+        }
       ],
       currentTabId: 2
     }
@@ -125,8 +150,33 @@ describe('Tabs.vue', () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'select * from foo', chart: [], isSaved: true },
-        { id: 2, name: null, tempName: 'Untitled', query: '', chart: [], isSaved: false }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'select * from foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: true
+        },
+        {
+          id: 2,
+          name: null,
+          tempName: 'Untitled',
+          query: '',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: false
+        }
       ],
       currentTabId: 2
     }
@@ -166,8 +216,33 @@ describe('Tabs.vue', () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'select * from foo', chart: [], isSaved: true },
-        { id: 2, name: null, tempName: 'Untitled', query: '', chart: [], isSaved: false }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'select * from foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: true
+        },
+        {
+          id: 2,
+          name: null,
+          tempName: 'Untitled',
+          query: '',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: false
+        }
       ],
       currentTabId: 2
     }
@@ -211,8 +286,33 @@ describe('Tabs.vue', () => {
     // mock store state
     const state = {
       tabs: [
-        { id: 1, name: 'foo', query: 'select * from foo', chart: [], isSaved: true },
-        { id: 2, name: null, tempName: 'Untitled', query: '', chart: [], isSaved: false }
+        {
+          id: 1,
+          name: 'foo',
+          query: 'select * from foo',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: true
+        },
+        {
+          id: 2,
+          name: null,
+          tempName: 'Untitled',
+          query: '',
+          viewType: 'chart',
+          viewOptions: {},
+          layout: {
+            sqlEditor: 'above',
+            table: 'bottom',
+            dataView: 'hidden'
+          },
+          isSaved: false
+        }
       ],
       currentTabId: 2
     }

tests/views/Main/Workspace/Workspace.spec.js

@@ -12,9 +12,11 @@ describe('Workspace.vue', () => {
       tabs: []
     }
     const store = new Vuex.Store({ state, actions, mutations })
+    const $route = { path: '/workspace', query: {} }
     mount(Workspace, {
       store,
-      stubs: ['router-link']
+      stubs: ['router-link'],
+      mocks: { $route }
     })
 
     expect(state.tabs[0].query).to.include('Your database is empty.')
@@ -24,4 +26,20 @@ describe('Workspace.vue', () => {
     expect(state.tabs[0].viewOptions).to.equal(undefined)
     expect(state.tabs[0].isSaved).to.equal(false)
   })
+
+  it('Collapse schema if hide_schema is 1', () => {
+    const state = {
+      db: {},
+      tabs: []
+    }
+    const store = new Vuex.Store({ state, actions, mutations })
+    const $route = { path: '/workspace', query: { hide_schema: '1' } }
+    const vm = mount(Workspace, {
+      store,
+      stubs: ['router-link'],
+      mocks: { $route }
+    })
+
+    expect(vm.find('#schema-container').element.offsetWidth).to.equal(0)
+  })
 })