✅ Add unit tests and travis.yml

test/unit/specs/Bar.spec.js

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+import Vue from 'vue'
+import BarChart from 'src/examples/BarExample'
+
+describe('BarChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<bar-chart></bar-chart>',
+      components: { BarChart }
+    })
+    expect(vm.$el.querySelector('#bar-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/Bubble.spec.js

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+import Vue from 'vue'
+import BubbleChart from 'src/examples/BubbleExample'
+
+describe('BubbleChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<bubble-chart></bubble-chart>',
+      components: { BubbleChart }
+    })
+    expect(vm.$el.querySelector('#bubble-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/Doughnut.spec.js

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+import Vue from 'vue'
+import DoughnutChart from 'src/examples/DoughnutExample'
+
+describe('DoughnutChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<doughnut-chart></doughnut-chart>',
+      components: { DoughnutChart }
+    })
+    expect(vm.$el.querySelector('#doughnut-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/Line.spec.js

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+import Vue from 'vue'
+import LineChart from 'src/examples/LineExample'
+
+describe('LineChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<line-chart></line-chart>',
+      components: { LineChart }
+    })
+    expect(vm.$el.querySelector('#line-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/Pie.spec.js

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+import Vue from 'vue'
+import PieChart from 'src/examples/PieExample'
+
+describe('PieChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<pie-chart></pie-chart>',
+      components: { PieChart }
+    })
+    expect(vm.$el.querySelector('#pie-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/PolarArea.spec.js

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+import Vue from 'vue'
+import PolarChart from 'src/examples/PolarAreaExample'
+
+describe('PolarChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<polar-chart></polar-chart>',
+      components: { PolarChart }
+    })
+    expect(vm.$el.querySelector('#polar-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/Radar.spec.js

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+import Vue from 'vue'
+import RadarChart from 'src/examples/RadarExample'
+
+describe('RadarChart', () => {
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      el: 'body',
+      replace: false,
+      template: '<radar-chart></radar-chart>',
+      components: { RadarChart }
+    })
+    expect(vm.$el.querySelector('#radar-chart')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('undefined')
+    expect(vm.$el.querySelector('canvas')).not.to.be.an('null')
+    expect(vm.$el.querySelector('canvas')).to.exist
+  })
+})

test/unit/specs/helpers/options.spec.js

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+import { mergeOptions } from 'src/helpers/options'
+
+describe('mergeOptions.js', () => {
+  const a = {
+    a: 'a',
+    b: 'a'
+  }
+
+  const b = {
+    a: 'b',
+    b: 'b'
+  }
+
+  const c = {
+    c: 'c'
+  }
+
+  it('should replace old a and b if a and b are new', () => {
+    let ab = mergeOptions(a, b)
+    expect(ab).to.have.property('a').and.to.equal('b')
+    expect(ab).to.have.property('b').and.to.equal('b')
+  })
+
+  it('should add c if c is new', () => {
+    let ac = mergeOptions(a, c)
+    expect(ac).to.have.property('a').and.to.equal('a')
+    expect(ac).to.have.property('b').and.to.equal('a')
+    expect(ac).to.have.property('c').and.to.equal('c')
+  })
+})