Update README.md

fix warnings in tests

.github/workflows/test.yml

@@ -15,10 +15,11 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: 10.x
-    - name: Install chromium
-      run:  
-        sudo DEBIAN_FRONTEND=noninteractive apt-get update && 
-        sudo DEBIAN_FRONTEND=noninteractive apt-get install -y chromium-browser
+    - name: Install browsers
+      run: |
+        export DEBIAN_FRONTEND=noninteractive
+        sudo apt-get update
+        sudo apt-get install -y chromium-browser firefox
 
     - name: Install the project
       run: npm install

README.md

@@ -4,153 +4,23 @@
 
 # sqliteviz
 
-Sqliteviz is a single-page application for fully client-side visualisation of SQLite databases or CSV.
+Sqliteviz is a single-page PWA for fully client-side visualisation of SQLite databases or CSV files.
+
+This application allows to:
+- run SQL queries in SQLite database and create all kinds of charts based on result set
+- import CSV file into SQLite database and visualize imported data
+- save queries and chart settings
+- import/export queries and chart settings to/from a JSON file
+- manipulate saved queries (rename, duplicate, delete)
+- set predefined queries available for all users of sqliteviz on your server (read more about predefind queries on [Wiki][10])
+- export modified SQLite database
+- use it offline
 
 ## Get started
-
 The latest release of sqliteviz is running on [Github pages][6]. The simplest way to start is to use sqliteviz there.
 
-### Choose a databese or CSV file
-
-You can choose a database or CSV file right on the welcom page (fig. 1). The supported file extentions: `.csv`, `.db`,`.sqlite` and `.sqlite3`.
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_welcome.png" width="400"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 1: Welcome page
-  </sub>
-</p>
-
-If you choose a CSV file it will be parsed. Then sqliteviz creates a new database with data from the CSV in `csv_import` table. You can change parsing settings in the dialog which is shown automatically if you choose a CSV file (fig. 2).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_csv.png" width="650"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 2: Import CSV dialog
-  </sub>
-</p>
-
-Choosing a database or CSV file is not a mandatory step. You can skip it and manipulate queries in sqliteviz without a database. Choose a database or CSV later in the left panel of the `Editor` when it's time to run a query (fig. 3).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_editor.png" width="650"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 3: Editor (neither database nor CSV is chosen) 
-  </sub>
-</p>
-
-After chosing a database or CSV you can browse tables, columns and their types in the left panel of the `Editor` (fig. 4).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_editor_with_db.png" width="650"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 4: Editor (database is chosen)
-  </sub>
-</p>
-
-### Create a query
-
-#### Open a new tab
-
-Press `Create` button in the top toolbar or use `Ctrl+b`(`Cmd+b` for MacOS) keyboard shortcut to open a new tab for a query. The tab consists of two parts: a query text editor on the top and a result panel on the bottom.
-
-In the query text editor part you can specify a `SELECT` statement for getting data.
-
-The result panel has two modes: table view (fig. 4, fig. 5) and chart view (fig. 3). In the table view you can see the result of query running (fig. 5). In the chart view there is a chart editor component which allows to build a visialization from the result set.
-
-#### Run a query
-
-Press `Run` button in the top toolbar or use `Ctrl+r` or `Ctrl+Enter`(`Cmd+r` or `Cmd+Enter` for MacOS) keyboard shortcut to execute a query in the current opened tab.
-
-> **Note:**  Running is not available if neither a database nor CSV was chosen or a query for the current tab is not specified.
-
-The query result will be displayed in the result panel in table mode (fig. 5).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_result.png" width="650"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 5: Query results
-  </sub>
-</p>
-
-#### Create a chart
-
-After running a query you can switch result panel to the chart mode and create a chart with a `react-chart-editor` component. The same component with some additional features is used in Plotly Chart Studio. Explore its [documentation][7] to learn how to build charts with `react-chart-editor`.
-
-### Save a query
-
-Press `Save` button in the top toolbar or use `Ctrl+s`(`Cmd+s` for MacOS) keyboard shortcut to save a query in the current opened tab to local storage of your browser.
-
-After that the query will be in the list on `My queries` page.
-
-> **Note:**  Only the text of the query and chart settings will be saved. The result of the query execution won't be saved.
-
-## Working with saved queries
-
-You can find all queries that you saved in `My queries` (fig. 6).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_my_queries.png" width="600"/>
-</p>
-
-<p align="center">
-  <sub>
-    Fig. 6: My queries
-  </sub>
-</p>
-
-To manipulate one query hover the cursor over the row with the query and choose the action:
-
-* <img src="src/assets/images/rename.svg"/> - rename a query
-* <img src="src/assets/images/copy.svg"/> - duplicate a query
-* <img src="src/assets/images/file-export.svg"/> - export a query to json file
-* <img src="src/assets/images/delete.svg"/> - delete a query
-
-To edit the text of a query or its chart settings click on the respective row. You will be redirected to `Editor` where the chosen query will be opened in a tab.
-
-> **Note:** After opening a query there will be no chart for it even if you specified it and saved. That is so because there is no data to build the chart. Run the query and all saved chart settings will be applied.
-
-You can also delete or export to file a group of queries. Select queries with checkboxes and press `Delete`/`Export` button above the grid (fig. 7).
-
-<p align="center">
-   <img class="figure" src="src/assets/images/Screenshot_group.png" width="600"/> 
-</p>
-
-
-<p align="center">
-  <sub>
-    Fig. 7: My queries: a group of queries is selected
-   </sub>
-</p>
-
-> **Note:** Some operations are not available for predefined queries (see below).
-
-## Import queries
-
-Click `Import` button on `My queries` page to import queries from JSON file generated by export.
-
-## Predefined queries
-
-If you run sqliteviz on your own server you can specify predefined queries. These queries will be in `My queries` list for all users working with sqliteviz on your server.
-
-To create a list of predefined queries choose queries in `My queries` list and export them to `queries.json`. Then place this file on the server in the same directory as `index.html`.
-
-A user can't edit, rename or delete a predefined query. The rest operations are available.
+## Wiki
+For user documentation, check out sqliteviz [Wiki][7].
 
 ## Motivation
 It's a kind of middleground between [Plotly Falcon][1] and [Redash][2].
@@ -164,7 +34,7 @@ It is built on top of [react-chart-editor][3], [sql.js][4] and [Vue-Codemirror][
 [4]: https://github.com/sql-js/sql.js
 [5]: https://github.com/vuejs/vue
 [6]: https://lana-k.github.io/sqliteviz
-[7]: https://plotly.com/chart-studio-help/tutorials/#basic
+[7]: https://github.com/lana-k/sqliteviz/wiki
 [8]: https://github.com/surmon-china/vue-codemirror#readme
 [9]: https://www.papaparse.com/
-
+[10]: https://github.com/lana-k/sqliteviz/wiki/Predefined-queries

karma.conf.js

@@ -76,9 +76,17 @@ module.exports = function (config) {
     // enable / disable watching file and executing tests whenever any file changes
     autoWatch: false,
 
+    customLaunchers: {
+      FirefoxHeadlessTouch: {
+        base: 'FirefoxHeadless',
+        prefs: {
+          'dom.w3c_touch_events.enabled': 1
+        }
+      }
+    },
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: ['ChromiumHeadless'],
+    browsers: ['ChromiumHeadless', 'FirefoxHeadlessTouch'],
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
@@ -86,10 +94,13 @@ module.exports = function (config) {
 
     // Concurrency level
     // how many browser should be started simultaneous
-    concurrency: Infinity,
+    concurrency: 2,
 
     client: {
-      captureConsole: true
+      captureConsole: true,
+      mocha: {
+        timeout: 7000
+      }
     },
     browserConsoleLogOptions: {
       terminal: true,

package.json

@@ -48,9 +48,11 @@
     "eslint-plugin-standard": "^4.0.0",
     "eslint-plugin-vue": "^6.2.2",
     "karma": "^3.1.4",
+    "karma-firefox-launcher": "^2.1.0",
     "karma-webpack": "^4.0.2",
     "vue-cli-plugin-ui-karma": "^0.2.5",
     "vue-template-compiler": "^2.6.11",
+    "workbox-webpack-plugin": "^6.1.5",
     "worker-loader": "^3.0.8"
   }
 }

public/index.html

@@ -5,13 +5,94 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <link rel="icon" href="<%= BASE_URL %>favicon.png">
+    <link rel="manifest" href="<%= BASE_URL %>manifest.webmanifest">
     <title><%= htmlWebpackPlugin.options.title %></title>
+    <style>
+      #loading-wrapper {
+        position: fixed;
+        width: 100%;
+        height: 100%;
+        left: 0;
+        top: 0;
+        background-color: white;
+      }
+    
+      #loading-text {
+        display: block;
+        position: absolute;
+        top: 50%;
+        left: 50%;
+        transform: translate(-50%, -50%);
+        color: #506784;
+        font-family: sans-serif;
+        font-size: 20px;
+      }
+      
+      .svg-container {
+        display: block;
+        position: absolute;
+        left: 50%;
+        top: 50%;
+        transform: translate(-50%, -50%);
+      }
+
+      .loader-svg {
+        position: absolute;
+        left: 0; right: 0; top: 0; bottom: 0;
+        fill: none;
+        stroke-width: 5px;
+        stroke-linecap: round;
+        stroke: #119DFF;
+      }
+
+      .loader-svg.bg {
+        stroke: #C8D4E3;
+      }
+
+      .loader-svg.front {
+        stroke-dasharray: 402px;
+        animation: loading 2s linear 0s infinite;
+      }
+
+      @keyframes loading {
+        0% {
+          stroke-dasharray: 100px 402px;
+          stroke-dashoffset: 0;
+        }
+        50% {
+          stroke-dasharray: 251px;
+          stroke-dashoffset: -251px;
+        }
+        100% {
+          stroke-dasharray: 100px 402px;
+          stroke-dashoffset: -502px;
+        }
+      }
+    </style>
   </head>
   <body>
     <noscript>
       <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
     </noscript>
-    <div id="app"></div>
+    <div id="app">
+      <div id="loading-wrapper">
+        <div id="loading-text">LOADING</div>
+        <svg class="svg-container" height="170" width="170" viewBox="0 0 170 170">
+          <circle
+            class="loader-svg bg"
+            cx="85"
+            cy="85"
+            r="80"
+          />
+          <circle
+            class="loader-svg front"
+            cx="85"
+            cy="85"
+            r="80"
+          />
+        </svg>
+      </div>
+    </div>
     <!-- built files will be auto injected -->
   </body>
 </html>

public/manifest.webmanifest

@@ -0,0 +1,20 @@
+{
+  "background_color": "white",
+  "description": "Sqliteviz is a single-page application for fully client-side visualisation of SQLite databases or CSV.",
+  "display": "fullscreen",
+  "icons": [
+    {
+      "src": "Logo192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "Logo512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "name": "sqliteviz",
+  "short_name": "sqliteviz",
+  "start_url": "index.html"
+}

registerServiceWorker.js

@@ -0,0 +1,44 @@
+let refresh = false
+
+function invokeServiceWorkerUpdateFlow (registration) {
+  const agree = confirm('New version of the app is available. Refresh now?')
+  if (agree) {
+    if (registration.waiting) {
+      // let waiting Service Worker know it should became active
+      refresh = true
+      registration.waiting.postMessage({ type: 'SKIP_WAITING' })
+    }
+  }
+}
+
+if ('serviceWorker' in navigator) {
+  window.addEventListener('load', async () => {
+    const registration = await navigator.serviceWorker.register('/service-worker.js')
+    // ensure the case when the updatefound event was missed is also handled
+    // by re-invoking the prompt when there's a waiting Service Worker
+    if (registration.waiting) {
+      invokeServiceWorkerUpdateFlow(registration)
+    }
+
+    // detect Service Worker update available and wait for it to become installed
+    registration.addEventListener('updatefound', () => {
+      const newRegestration = registration.installing
+      if (newRegestration) {
+        // wait until the new Service worker is actually installed (ready to take over)
+        newRegestration.addEventListener('statechange', () => {
+          if (registration.waiting && navigator.serviceWorker.controller) {
+            invokeServiceWorkerUpdateFlow(registration)
+          }
+        })
+      }
+    })
+
+    // detect controller change and refresh the page
+    navigator.serviceWorker.addEventListener('controllerchange', () => {
+      if (refresh) {
+        window.location.reload()
+        refresh = false
+      }
+    })
+  })
+}

src/assets/styles/tooltips.css

@@ -6,7 +6,6 @@
   padding: 0 6px;
   line-height: 19px;;
   position: fixed;
-  z-index: 5;
   height: 19px;
   border-radius: var(--border-radius-medium);
   white-space: nowrap;

src/components/DbUploader.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="db-uploader-container">
+  <div class="db-uploader-container" :style="{ width }">
     <change-db-icon v-if="type === 'small'" @click.native="browse"/>
     <div v-if="['regular', 'illustrated'].includes(type)" class="drop-area-container">
       <div
@@ -139,6 +139,15 @@ import ChangeDbIcon from '@/components/svg/changeDb'
 import time from '@/time'
 import database from '@/database'
 
+const csvMimeTypes = [
+  'text/csv',
+  'text/x-csv',
+  'application/x-csv',
+  'application/csv',
+  'text/x-comma-separated-values',
+  'text/comma-separated-values'
+]
+
 export default {
   name: 'DbUploader',
   props: {
@@ -149,6 +158,11 @@ export default {
       validator: (value) => {
         return ['regular', 'illustrated', 'small'].includes(value)
       }
+    },
+    width: {
+      type: String,
+      required: false,
+      default: 'unset'
     }
   },
   components: {
@@ -324,8 +338,9 @@ export default {
           }, 1000)
 
           // Create db with csv table and get schema
+          const name = file.name.replace(/\.[^.]+$/, '')
           start = new Date()
-          this.schema = await this.newDb.createDb(file.name, parseResult.data, progressCounterId)
+          this.schema = await this.newDb.createDb(name, parseResult.data, progressCounterId)
           end = new Date()
 
           // Inform about import success
@@ -365,7 +380,7 @@ export default {
 
     async checkFile (file) {
       this.state = 'drop'
-      if (file.type === 'text/csv') {
+      if (csvMimeTypes.includes(file.type)) {
         this.file = file
         this.header = true
         this.quoteChar = '"'

src/components/LoadingIndicator.vue

@@ -24,7 +24,7 @@ export default {
     circleProgress () {
       const dash = (50.24 * this.progress) / 100
       const space = 50.24 - dash
-      return `${dash}, ${space}`
+      return `${dash}px, ${space}px`
     },
     animationClass () {
       return this.progress === undefined ? 'loading' : 'progress'
@@ -48,22 +48,22 @@ export default {
 }
 
 .loading .loader-svg.front {
-  stroke-dasharray: 40.24;
+  stroke-dasharray: 40.24px;
   animation: fill-animation-loading 1s cubic-bezier(1,1,1,1) 0s infinite;
 }
 
 @keyframes fill-animation-loading {
   0% {
-    stroke-dasharray: 10 40.24;
+    stroke-dasharray: 10px 40.24px;
     stroke-dashoffset: 0;
   }
   50% {
-    stroke-dasharray: 25.12;
-    stroke-dashoffset: 25.12;
+    stroke-dasharray: 25.12px;
+    stroke-dashoffset: 25.12px;
   }
   100% {
-    stroke-dasharray: 10 40.24 ;
-    stroke-dashoffset: 50.24;
+    stroke-dasharray: 10px 40.24px;
+    stroke-dashoffset: 50.24px;
   }
 }
 

src/components/Schema.vue

@@ -8,7 +8,8 @@
         <tree-chevron :expanded="schemaVisible"/>
         {{ dbName }}
       </div>
-        <db-uploader id="db-edit" type="small" />
+      <db-uploader id="db-edit" type="small" />
+      <export-icon tooltip="Export database" @click="exportToFile"/>
     </div>
     <div v-show="schemaVisible" class="schema">
       <table-description
@@ -26,6 +27,7 @@ import TableDescription from '@/components/TableDescription'
 import TextField from '@/components/TextField'
 import TreeChevron from '@/components/svg/treeChevron'
 import DbUploader from '@/components/DbUploader'
+import ExportIcon from '@/components/svg/export'
 
 export default {
   name: 'Schema',
@@ -33,7 +35,8 @@ export default {
     TableDescription,
     TextField,
     TreeChevron,
-    DbUploader
+    DbUploader,
+    ExportIcon
   },
   data () {
     return {
@@ -56,6 +59,11 @@ export default {
     dbName () {
       return this.$store.state.dbName
     }
+  },
+  methods: {
+    exportToFile () {
+      this.$store.state.db.export(`${this.dbName}.sqlite`)
+    }
   }
 }
 </script>
@@ -95,6 +103,11 @@ export default {
 
 .db-name {
   cursor: pointer;
+  margin-right: 6px;
+  max-width: 150px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  flex-shrink: 0;
 }
 
 .db-name:hover .chevron-icon path,

src/components/Tab.vue

@@ -108,8 +108,11 @@ export default {
       this.isGettingResults = true
       this.result = null
       this.error = null
+      const state = this.$store.state
       try {
-        this.result = await this.$store.state.db.execute(this.query + ';')
+        this.result = await state.db.execute(this.query + ';')
+        const schema = await state.db.getSchema(state.dbName)
+        this.$store.commit('saveSchema', schema)
       } catch (err) {
         this.error = err
       }

src/components/TextField.vue

@@ -1,6 +1,6 @@
 <template>
   <div>
-    <div :class="['text-field-label', { error: errorMsg }, {'disabled': disabled}]">
+    <div v-if="label" :class="['text-field-label', { error: errorMsg }, {'disabled': disabled}]">
       {{ label }}
       <hint-icon class="hint" v-if="hint" :hint="hint" :max-width="maxHintWidth || '149px'"/>
     </div>
@@ -11,7 +11,7 @@
       :style="{ width: width }"
       :value="value"
       :disabled="disabled"
-      @input="$emit('input',  $event.target.value)"
+      @input="$emit('input', $event.target.value)"
     />
     <div v-show="errorMsg" class="text-field-error">{{ errorMsg }}</div>
   </div>

src/components/svg/copy.vue

@@ -33,7 +33,7 @@ export default {
 
 <style scoped>
 .icon {
-  vertical-align: middle;
+  display: block;
   margin: 0 12px;
 }
 .icon:hover path {

src/components/svg/delete.vue

@@ -33,7 +33,7 @@ export default {
 
 <style scoped>
 .icon {
-  vertical-align: middle;
+  display: block;
   margin: 0 12px;
 }
 

src/components/svg/export.vue

@@ -15,10 +15,10 @@
         d="M10.5 1.5H4.5C3.675 1.5 3 2.175 3 3V15C3 15.825 3.675 16.5 4.5 16.5H13.5C14.325 16.5 15 15.825 15 15V6L10.5 1.5ZM13.5 15H4.5V3H9.75V6.75H13.5V15ZM12 8.25V13.575L10.425 12L8.325 14.1L6.225 12L8.325 9.9L6.675 8.25H12Z"
         fill="#A2B1C6"
       />
-  </svg>
-  <span class="icon-tooltip" :style="tooltipStyle">
-    Export query to file
-  </span>
+    </svg>
+    <span class="icon-tooltip" :style="tooltipStyle">
+      {{ tooltip }}
+    </span>
   </span>
 </template>
 
@@ -27,14 +27,16 @@ import tooltipMixin from '@/mixins/tooltips'
 
 export default {
   name: 'ExportIcon',
-  mixins: [tooltipMixin]
+  mixins: [tooltipMixin],
+  props: ['tooltip']
 }
 </script>
 
 <style scoped>
 .icon {
-  vertical-align: middle;
+  display: block;
   margin: 0 12px;
+  cursor: pointer;
 }
 
 .icon:hover path {

src/components/svg/rename.vue

@@ -33,7 +33,7 @@ export default {
 
 <style scoped>
 .icon {
-  vertical-align: middle;
+  display: block;
   margin: 0 12px;
 }
 

src/database.js

@@ -59,7 +59,7 @@ class Database {
     })
 
     if (result.error) {
-      throw result.error
+      throw new Error(result.error)
     }
 
     return await this.getSchema(name)
@@ -70,10 +70,10 @@ class Database {
     const res = await this.pw.postMessage({ action: 'open', buffer: fileContent })
 
     if (res.error) {
-      throw res.error
+      throw new Error(res.error)
     }
 
-    return this.getSchema(file.name)
+    return this.getSchema(file.name.replace(/\.[^.]+$/, ''))
   }
 
   async getSchema (name) {
@@ -103,11 +103,20 @@ class Database {
     const results = await this.pw.postMessage({ action: 'exec', sql: commands })
 
     if (results.error) {
-      throw results.error
+      throw new Error(results.error)
     }
     // if it was more than one select - take only the last one
     return results[results.length - 1]
   }
+
+  async export (fileName) {
+    const data = await this.pw.postMessage({ action: 'export' })
+
+    if (data.error) {
+      throw new Error(data.error)
+    }
+    fu.exportToFile(data, fileName)
+  }
 }
 
 function getAst (sql) {

src/db.worker.js

@@ -23,7 +23,7 @@ function processMsg (sql) {
 
 function onError (error) {
   return {
-    error
+    error: error.message
   }
 }
 

src/main.js

@@ -12,6 +12,10 @@ import '@/assets/styles/dialogs.css'
 import '@/assets/styles/tooltips.css'
 import '@/assets/styles/messages.css'
 
+if (!['localhost', '127.0.0.1'].includes(location.hostname)) {
+  import('../registerServiceWorker') // eslint-disable-line no-unused-expressions
+}
+
 Vue.use(VuePlugin)
 Vue.use(VModal)
 

src/views/Editor.vue

@@ -11,7 +11,7 @@
           <div class="warning">
             Database is not loaded. Queries can’t be run without database.
           </div>
-          <db-uploader id="db-uploader"/>
+          <db-uploader id="db-uploader" width="100%"/>
         </div>
       </template>
       <template #right-pane>
@@ -64,10 +64,6 @@ export default {
   box-sizing: border-box;
 }
 
->>> .db-uploader-container {
-  width: 100%;
-}
-
 >>>.drop-area {
   padding: 0 15px;
 }

src/views/MyQueries.vue

@@ -81,7 +81,10 @@
                   <div class="icons-container">
                     <rename-icon v-if="!query.isPredefined" @click="showRenameDialog(query.id)" />
                     <copy-icon @click="duplicateQuery(index)"/>
-                    <export-icon @click="exportToFile([query], `${query.name}.json`)"/>
+                    <export-icon
+                      @click="exportToFile([query], `${query.name}.json`)"
+                      tooltip="Export query to file"
+                    />
                     <delete-icon
                       v-if="!query.isPredefined"
                       @click="showDeleteDialog((new Set()).add(query.id))"
@@ -520,7 +523,7 @@ tbody tr:hover td {
   text-overflow: ellipsis;
 }
 tbody tr:hover .icons-container {
-  display: block;
+  display: flex;
 }
 .dialog input {
   width: 100%;

tests/components/DbUploader.spec.js

@@ -16,7 +16,8 @@ describe('DbUploader.vue', () => {
     // mock store state and mutations
     state = {}
     mutations = {
-      saveSchema: sinon.stub()
+      saveSchema: sinon.stub(),
+      setDb: sinon.stub()
     }
     store = new Vuex.Store({ state, mutations })
   })
@@ -131,7 +132,7 @@ describe('DbUploader.vue import CSV', () => {
 
   beforeEach(() => {
     // mock getting a file from user
-    sinon.stub(fu, 'getFileFromUser').resolves({ type: 'text/csv' })
+    sinon.stub(fu, 'getFileFromUser').resolves({ type: 'text/csv', name: 'foo.csv' })
 
     clock = sinon.useFakeTimers()
 
@@ -563,7 +564,8 @@ describe('DbUploader.vue import CSV', () => {
     let resolveImport = sinon.stub()
     const newDb = {
       createDb: sinon.stub().resolves(new Promise(resolve => { resolveImport = resolve })),
-      createProgressCounter: sinon.stub().returns(1)
+      createProgressCounter: sinon.stub().returns(1),
+      deleteProgressCounter: sinon.stub()
     }
     sinon.stub(database, 'getNewDatabase').returns(newDb)
 
@@ -596,6 +598,7 @@ describe('DbUploader.vue import CSV', () => {
     expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
     expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
     expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+    expect(newDb.createDb.getCall(0).args[0]).to.equal('foo') // file name
 
     // After resolving - loading indicator is not shown
     await resolveImport()
@@ -811,7 +814,8 @@ describe('DbUploader.vue import CSV', () => {
     const newDb = {
       createDb: sinon.stub().resolves(schema),
       createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub()
+      deleteProgressCounter: sinon.stub(),
+      shutDown: sinon.stub()
     }
     sinon.stub(database, 'getNewDatabase').returns(newDb)
 
@@ -831,6 +835,7 @@ describe('DbUploader.vue import CSV', () => {
     expect(actions.addTab.called).to.equal(false)
     expect(mutations.setCurrentTabId.called).to.equal(false)
     expect($router.push.called).to.equal(false)
+    expect(newDb.shutDown.calledOnce).to.equal(true)
     expect(wrapper.find('[data-modal="parse"]').exists()).to.equal(false)
   })
 })

tests/components/LoadingIndicator.spec.js

@@ -19,6 +19,6 @@ describe('LoadingIndicator.vue', () => {
     })
     // The lendth of circle in the component is 50.24. If progress is 50% then resulting arc
     // should be 25.12
-    expect(wrapper.find('.loader-svg.front').element.style.strokeDasharray).to.equal('25.12, 25.12')
+    expect(wrapper.find('.loader-svg.front').element.style.strokeDasharray).to.equal('25.12px, 25.12px')
   })
 })

tests/components/Schema.spec.js

@@ -98,4 +98,18 @@ describe('Schema.vue', () => {
     expect(tables.at(1).vm.name).to.equal('bar')
     expect(tables.at(2).vm.name).to.equal('foobar')
   })
+
+  it('exports db', async () => {
+    const state = {
+      dbName: 'fooDB',
+      db: {
+        export: sinon.stub().resolves()
+      }
+    }
+    const store = new Vuex.Store({ state })
+    const wrapper = mount(Schema, { store, localVue })
+
+    await wrapper.findComponent({ name: 'export-icon' }).trigger('click')
+    expect(state.db.export.calledOnceWith('fooDB'))
+  })
 })

tests/components/Tab.spec.js

@@ -6,6 +6,10 @@ import Vuex from 'vuex'
 import Tab from '@/components/Tab.vue'
 
 describe('Tab.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
   it('Renders passed query', () => {
     // mock store state
     const state = {
@@ -142,7 +146,7 @@ describe('Tab.vue', () => {
     expect(state.tabs[0].isUnsaved).to.equal(true)
   })
 
-  it('Shows .result-in-progress message when executing query', (done) => {
+  it('Shows .result-in-progress message when executing query', async () => {
     // mock store state
     const state = {
       currentTabId: 1,
@@ -167,11 +171,9 @@ describe('Tab.vue', () => {
     })
 
     wrapper.vm.execute()
-    wrapper.vm.$nextTick(() => {
-      expect(wrapper.find('.table-view .result-before').isVisible()).to.equal(false)
-      expect(wrapper.find('.table-view .result-in-progress').isVisible()).to.equal(true)
-    })
-    done()
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.table-view .result-before').isVisible()).to.equal(false)
+    expect(wrapper.find('.table-view .result-in-progress').isVisible()).to.equal(true)
   })
 
   it('Shows error when executing query ends with error', async () => {
@@ -179,7 +181,7 @@ describe('Tab.vue', () => {
     const state = {
       currentTabId: 1,
       db: {
-        execute () { return Promise.reject(new Error('There is no table foo')) }
+        execute: sinon.stub().rejects(new Error('There is no table foo'))
       }
     }
 
@@ -206,15 +208,6 @@ describe('Tab.vue', () => {
   })
 
   it('Passes result to sql-table component', async () => {
-    // mock store state
-    const state = {
-      currentTabId: 1,
-      db: {
-        execute () { return Promise.resolve(result) }
-      }
-    }
-
-    const store = new Vuex.Store({ state, mutations })
     const result = {
       columns: ['id', 'name'],
       values: [
@@ -222,6 +215,16 @@ describe('Tab.vue', () => {
         [2, 'bar']
       ]
     }
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      db: {
+        execute: sinon.stub().resolves(result),
+        getSchema: sinon.stub().resolves({ dbName: '', schema: [] })
+      }
+    }
+
+    const store = new Vuex.Store({ state, mutations })
 
     // mount the component
     const wrapper = mount(Tab, {
@@ -243,4 +246,60 @@ describe('Tab.vue', () => {
     expect(wrapper.find('.table-preview.error').isVisible()).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: []
+    }
+    const newSchema = {
+      dbName: 'fooDb',
+      schema: [
+        {
+          name: 'foo',
+          columns: [
+            { name: 'id', type: 'INTEGER' },
+            { name: 'title', type: 'NVARCHAR(30)' }
+          ]
+        },
+        {
+          name: 'bar',
+          columns: [
+            { name: 'a', type: 'N/A' },
+            { name: 'b', type: 'N/A' }
+          ]
+        }
+      ]
+    }
+    // mock store state
+    const state = {
+      currentTabId: 1,
+      dbName: 'fooDb',
+      db: {
+        execute: sinon.stub().resolves(result),
+        getSchema: sinon.stub().resolves(newSchema)
+      }
+    }
+
+    sinon.spy(mutations, 'saveSchema')
+    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);',
+        initChart: [],
+        tabIndex: 0,
+        isPredefined: false
+      }
+    })
+
+    await wrapper.vm.execute()
+    expect(state.db.getSchema.calledOnceWith('fooDb')).to.equal(true)
+    expect(mutations.saveSchema.calledOnceWith(state, newSchema)).to.equal(true)
+  })
 })

tests/components/TableDescription.spec.js

@@ -19,6 +19,7 @@ describe('TableDescription.vue', () => {
 
   it('Columns are visible and correct when click on table name', async () => {
     const wrapper = shallowMount(TableDescription, {
+      stubs: ['router-link'],
       propsData: {
         name: 'Test table',
         columns: [

tests/components/Tabs.spec.js

@@ -6,6 +6,10 @@ import Vuex from 'vuex'
 import Tabs from '@/components/Tabs.vue'
 
 describe('Tabs.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
   it('Renders start guide when there is no opened tabs', () => {
     // mock store state
     const state = {
@@ -14,7 +18,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state })
 
     // mount the component
-    const wrapper = shallowMount(Tabs, { store })
+    const wrapper = shallowMount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // check start-guide visibility
     expect(wrapper.find('#start-guide').isVisible()).to.equal(true)
@@ -32,7 +39,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state })
 
     // mount the component
-    const wrapper = shallowMount(Tabs, { store })
+    const wrapper = shallowMount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // check start-guide visibility
     expect(wrapper.find('#start-guide').isVisible()).to.equal(false)
@@ -64,7 +74,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = shallowMount(Tabs, { store })
+    const wrapper = shallowMount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // click on the first tab
     const firstTab = wrapper.findAll('.tab').at(0)
@@ -90,7 +103,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = mount(Tabs, { store, stubs: ['router-link'] })
+    const wrapper = mount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // click on the close icon of the first tab
     const firstTabCloseIcon = wrapper.findAll('.tab').at(0).find('.close-icon')
@@ -118,7 +134,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = mount(Tabs, { store, stubs: ['router-link'] })
+    const wrapper = mount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // click on the close icon of the second tab
     const secondTabCloseIcon = wrapper.findAll('.tab').at(1).find('.close-icon')
@@ -156,7 +175,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = mount(Tabs, { store, stubs: ['router-link'] })
+    const wrapper = mount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // click on the close icon of the second tab
     const secondTabCloseIcon = wrapper.findAll('.tab').at(1).find('.close-icon')
@@ -198,7 +220,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = mount(Tabs, { store, stubs: ['router-link'] })
+    const wrapper = mount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     // click on the close icon of the second tab
     const secondTabCloseIcon = wrapper.findAll('.tab').at(1).find('.close-icon')
@@ -243,7 +268,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = shallowMount(Tabs, { store })
+    const wrapper = shallowMount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     const event = new Event('beforeunload')
     sinon.spy(event, 'preventDefault')
@@ -264,7 +292,10 @@ describe('Tabs.vue', () => {
     const store = new Vuex.Store({ state, mutations })
 
     // mount the component
-    const wrapper = shallowMount(Tabs, { store })
+    const wrapper = shallowMount(Tabs, {
+      store,
+      stubs: ['router-link']
+    })
 
     const event = new Event('beforeunload')
     sinon.spy(event, 'preventDefault')

tests/database.spec.js

@@ -2,7 +2,9 @@ import chai from 'chai'
 import sinon from 'sinon'
 import chaiAsPromised from 'chai-as-promised'
 import initSqlJs from 'sql.js'
-import database from '@/database.js'
+import database from '@/database'
+import fu from '@/file.utils'
+
 chai.use(chaiAsPromised)
 const expect = chai.expect
 chai.should()
@@ -32,8 +34,10 @@ describe('database.js', () => {
 
     const data = tempDb.export()
     const buffer = new Blob([data])
+    buffer.name = 'foo.sqlite'
 
-    const { schema } = await db.loadDb(buffer)
+    const { schema, dbName } = await db.loadDb(buffer)
+    expect(dbName).to.equal('foo')
     expect(schema).to.have.lengthOf(1)
     expect(schema[0].name).to.equal('test')
     expect(schema[0].columns[0].name).to.equal('col1')
@@ -58,6 +62,7 @@ describe('database.js', () => {
 
     const data = tempDb.export()
     const buffer = new Blob([data])
+    buffer.name = 'foo.sqlite'
 
     const { schema } = await db.loadDb(buffer)
     expect(schema[0].name).to.equal('test_virtual')
@@ -74,6 +79,7 @@ describe('database.js', () => {
 
     const data = tempDb.export()
     const buffer = new Blob([data])
+    buffer.name = 'foo.sqlite'
 
     sinon.stub(db.pw, 'postMessage').resolves({ error: new Error('foo') })
 
@@ -97,6 +103,7 @@ describe('database.js', () => {
 
     const data = tempDb.export()
     const buffer = new Blob([data])
+    buffer.name = 'foo.sqlite'
 
     await db.loadDb(buffer)
     const result = await db.execute('SELECT * from test limit 1; SELECT * from test;')
@@ -124,6 +131,7 @@ describe('database.js', () => {
 
     const data = tempDb.export()
     const buffer = new Blob([data])
+    buffer.name = 'foo.sqlite'
     await db.loadDb(buffer)
     await expect(db.execute('SELECT * from foo')).to.be.rejectedWith(/^no such table: foo$/)
   })
@@ -204,4 +212,34 @@ describe('database.js', () => {
     db.deleteProgressCounter(firstId)
     expect(db.importProgresses[firstId]).to.equal(undefined)
   })
+
+  it('exports db', async () => {
+    sinon.stub(fu, 'exportToFile').resolves()
+
+    // create db with table foo
+    const stmt = `
+      CREATE TABLE foo(id, name);
+      INSERT INTO foo VALUES (1, 'Harry Potter')
+    `
+    let result = await db.execute(stmt)
+
+    // export db to a file
+    await db.export('fooDb.sqlite')
+    expect(fu.exportToFile.called).to.equal(true)
+
+    // get data from export
+    const data = fu.exportToFile.getCall(0).args[0]
+    const file = new Blob([data])
+    file.name = 'fooDb.sqlite'
+
+    // loadDb from exported data
+    const anotherDb = database.getNewDatabase()
+    await anotherDb.loadDb(file)
+
+    // check that new db works and has the same table and data
+    result = await anotherDb.execute('SELECT * from foo')
+    expect(result.columns).to.eql(['id', 'name'])
+    expect(result.values).to.have.lengthOf(1)
+    expect(result.values[0]).to.eql([1, 'Harry Potter'])
+  })
 })

tests/file.utils.spec.js

@@ -57,9 +57,9 @@ describe('file.utils.js', () => {
     expect(URL.revokeObjectURL.calledOnceWith(url)).to.equal(true)
   })
 
-  it('importFile', () => {
+  it('importFile', async () => {
     const spyInput = document.createElement('input')
-    sinon.spy(spyInput, 'click')
+    sinon.stub(spyInput, 'click')
 
     const blob = new Blob(['foo'])
     Object.defineProperty(spyInput, 'files', {
@@ -71,14 +71,12 @@ describe('file.utils.js', () => {
 
     setTimeout(() => { spyInput.dispatchEvent(new Event('change')) })
 
-    return fu.importFile()
-      .then((data) => {
-        expect(data).to.equal('foo')
-        expect(document.createElement.calledOnceWith('input')).to.equal(true)
-        expect(spyInput.type).to.equal('file')
-        expect(spyInput.accept).to.equal('.json')
-        expect(spyInput.click.calledOnce).to.equal(true)
-      })
+    const data = await fu.importFile()
+    expect(data).to.equal('foo')
+    expect(document.createElement.calledOnceWith('input')).to.equal(true)
+    expect(spyInput.type).to.equal('file')
+    expect(spyInput.accept).to.equal('.json')
+    expect(spyInput.click.calledOnce).to.equal(true)
   })
 
   it('readFile', () => {

vue.config.js

@@ -1,4 +1,5 @@
 const CopyPlugin = require('copy-webpack-plugin')
+const WorkboxPlugin = require('workbox-webpack-plugin')
 
 module.exports = {
   publicPath: '',
@@ -9,7 +10,13 @@ module.exports = {
         // It is important that we do not change its name, and that it is in the same folder as the js
         { from: 'node_modules/sql.js/dist/sql-wasm.wasm', to: 'js/' },
         { from: 'LICENSE', to: './' }
-      ])
+      ]),
+      new WorkboxPlugin.GenerateSW({
+        exclude: [/\.map$/, 'LICENSE', 'queries.json'],
+        clientsClaim: true,
+        skipWaiting: false,
+        maximumFileSizeToCacheInBytes: 40000000
+      })
     ]
   },
   chainWebpack: config => {