add test for chart helper

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

@@ -1,56 +0,0 @@
-import { expect } from 'chai'
-import sinon from 'sinon'
-import * as chartHelper from '@/lib/chartHelper'
-import * as dereference from 'react-chart-editor/lib/lib/dereference'
-
-describe('chartHelper.js', () => {
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  it('getOptionsFromDataSources', () => {
-    const dataSources = {
-      id: [1, 2],
-      name: ['foo', 'bar']
-    }
-
-    const ds = chartHelper.getOptionsFromDataSources(dataSources)
-    expect(ds).to.eql([
-      { value: 'id', label: 'id' },
-      { value: 'name', label: 'name' }
-    ])
-  })
-
-  it('getOptionsForSave', () => {
-    const state = {
-      data: {
-        foo: {},
-        bar: {}
-      },
-      layout: {},
-      frames: {}
-    }
-    const dataSources = {
-      id: [1, 2],
-      name: ['foo', 'bar']
-    }
-    sinon.stub(dereference, 'default')
-    sinon.spy(JSON, 'parse')
-
-    const ds = chartHelper.getOptionsForSave(state, dataSources)
-
-    expect(dereference.default.calledOnce).to.equal(true)
-
-    const args = dereference.default.firstCall.args
-    expect(args[0]).to.eql({
-      foo: {},
-      bar: {}
-    })
-    expect(args[1]).to.eql({
-      id: [],
-      name: []
-    })
-
-    expect(ds).to.equal(JSON.parse.returnValues[0])
-  })
-})