change code structure

tests/lib/database/_statements.spec.js

@@ -0,0 +1,34 @@
+import { expect } from 'chai'
+import dbUtils from '@/lib/database/_statements'
+
+describe('_statements.js', () => {
+  it('generateChunks', () => {
+    const arr = ['1', '2', '3', '4', '5']
+    const size = 2
+    const chunks = dbUtils.generateChunks(arr, size)
+    const output = []
+    for (const chunk of chunks) {
+      output.push(chunk)
+    }
+    expect(output[0]).to.eql(['1', '2'])
+    expect(output[1]).to.eql(['3', '4'])
+    expect(output[2]).to.eql(['5'])
+  })
+
+  it('getInsertStmt', () => {
+    const columns = ['id', 'name']
+    expect(dbUtils.getInsertStmt(columns))
+      .to.equal('INSERT INTO csv_import ("id", "name") VALUES (?, ?);')
+  })
+
+  it('getCreateStatement', () => {
+    const columns = ['id', 'name', 'isAdmin', 'startDate']
+    const values = [
+      [1, 'foo', true, new Date()],
+      [2, 'bar', false, new Date()]
+    ]
+    expect(dbUtils.getCreateStatement(columns, values)).to.equal(
+      'CREATE table csv_import("id" REAL, "name" TEXT, "isAdmin" INTEGER, "startDate" TEXT);'
+    )
+  })
+})