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| @@ -1,7 +1,3 @@ | ||
| --- | ||
| badge: unstable | ||
| --- | ||
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| Component do draw dead simple line charts. | ||
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| :::sample-card | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| import * as d3 from 'd3' | ||
| import { mount } from '@vue/test-utils' | ||
| import LineChart from '@/datavisualisations/LineChart.vue' | ||
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| jest.mock('d3', () => { | ||
| return { | ||
| __esModule: true, | ||
| ...jest.requireActual('d3') | ||
| } | ||
| }) | ||
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| // Mock HTML element offset so the size of the chart can be calculated | ||
| // dynamicly using JSDOM and tests | ||
| Object.defineProperties(window.HTMLElement.prototype, { | ||
| offsetWidth: { | ||
| get () { return parseFloat(this.style.width) || 0 } | ||
| }, | ||
| offsetHeight: { | ||
| get () { return parseFloat(this.style.height) || 0 } | ||
| } | ||
| }) | ||
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| describe('LineChart.vue', () => { | ||
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| describe('a single chart', () => { | ||
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| let wrapper | ||
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| beforeEach(async () => { | ||
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| const propsData = { | ||
| xAxisTicks: d3.timeYear.every(1), | ||
| data: [ | ||
| { date: 2000, value: 0 }, | ||
| { date: 2001, value: 1 }, | ||
| { date: 2002, value: 2 }, | ||
| { date: 2003, value: 3 }, | ||
| { date: 2004, value: 4 } | ||
| ] | ||
| } | ||
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| wrapper = mount(LineChart, { propsData }) | ||
| wrapper.vm.$el.style.width = '500px' | ||
| wrapper.vm.setSizes() | ||
| await wrapper.vm.$nextTick() | ||
| }) | ||
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| it('is a Vue instance', () => { | ||
| expect(wrapper.vm).toBeTruthy() | ||
| }) | ||
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| it('creates five x-axis ticks', async () => { | ||
| expect(wrapper.findAll('.line-chart__axis--x .tick')).toHaveLength(5) | ||
| }) | ||
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| it('creates x-axis ticks with the right years ', async () => { | ||
| const ticks = wrapper.findAll('.line-chart__axis--x .tick') | ||
| expect(ticks.at(0).text()).toBe('2000') | ||
| expect(ticks.at(1).text()).toBe('2001') | ||
| expect(ticks.at(2).text()).toBe('2002') | ||
| expect(ticks.at(3).text()).toBe('2003') | ||
| expect(ticks.at(4).text()).toBe('2004') | ||
| }) | ||
| }) | ||
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| describe('a two steps line chart using remote JSON', () => { | ||
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| let wrapper | ||
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| beforeEach(async () => { | ||
| d3.json = jest.fn().mockReturnValue([ | ||
| { date: 2019, value: 50 }, | ||
| { date: 2020, value: 100 } | ||
| ]) | ||
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| const propsData = { | ||
| data: 'http://localhost/data.json', | ||
| xAxisTicks: d3.timeYear.every(1) | ||
| } | ||
| wrapper = mount(LineChart, { propsData }) | ||
| wrapper.vm.$el.style.width = '500px' | ||
| wrapper.vm.setSizes() | ||
| await wrapper.vm.$nextTick() | ||
| }) | ||
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| it('is a Vue instance', () => { | ||
| expect(wrapper.vm).toBeTruthy() | ||
| }) | ||
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| it('creates two x-axis ticks', async () => { | ||
| expect(wrapper.findAll('.line-chart__axis--x .tick')).toHaveLength(2) | ||
| }) | ||
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| it('creates x-axis ticks with the right years ', async () => { | ||
| const ticks = wrapper.findAll('.line-chart__axis--x .tick') | ||
| expect(ticks.at(0).text()).toBe('2019') | ||
| expect(ticks.at(1).text()).toBe('2020') | ||
| }) | ||
| }) | ||
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| describe('a 10 columns chart with two highlights using remote CSV', () => { | ||
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| let wrapper | ||
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| beforeEach(async () => { | ||
| d3.csv = jest.fn().mockReturnValue([ | ||
| { date: 2000, indicator: 0, highlight: false }, | ||
| { date: 2001, indicator: 10, highlight: false }, | ||
| { date: 2002, indicator: 20, highlight: false }, | ||
| { date: 2003, indicator: 30, highlight: false }, | ||
| { date: 2004, indicator: 40, highlight: false }, | ||
| { date: 2005, indicator: 50, highlight: true }, | ||
| { date: 2006, indicator: 60, highlight: false }, | ||
| { date: 2007, indicator: 70, highlight: true }, | ||
| { date: 2008, indicator: 80, highlight: false }, | ||
| { date: 2009, indicator: 90, highlight: false } | ||
| ]) | ||
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| const propsData = { | ||
| data: 'http://localhost/data.csv', | ||
| dataUrlType: 'csv', | ||
| xAxisTicks: d3.timeYear.every(1), | ||
| seriesName: 'indicator' | ||
| } | ||
| wrapper = mount(LineChart, { propsData }) | ||
| wrapper.vm.$el.style.width = '500px' | ||
| wrapper.vm.setSizes() | ||
| await wrapper.vm.$nextTick() | ||
| }) | ||
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| afterEach(async () => { | ||
| wrapper.destroy() | ||
| }) | ||
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| it('is a Vue instance', () => { | ||
| expect(wrapper.vm).toBeTruthy() | ||
| }) | ||
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| it('creates ten x-axis ticks', () => { | ||
| expect(wrapper.findAll('.line-chart__axis--x .tick')).toHaveLength(10) | ||
| }) | ||
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| it('creates x-axis ticks with the right years', () => { | ||
| const ticks = wrapper.findAll('.line-chart__axis--x .tick') | ||
| expect(ticks.at(0).text()).toBe('2000') | ||
| expect(ticks.at(1).text()).toBe('2001') | ||
| expect(ticks.at(2).text()).toBe('2002') | ||
| expect(ticks.at(3).text()).toBe('2003') | ||
| expect(ticks.at(4).text()).toBe('2004') | ||
| expect(ticks.at(5).text()).toBe('2005') | ||
| expect(ticks.at(6).text()).toBe('2006') | ||
| expect(ticks.at(7).text()).toBe('2007') | ||
| expect(ticks.at(8).text()).toBe('2008') | ||
| expect(ticks.at(9).text()).toBe('2009') | ||
| }) | ||
| }) | ||
| }) |