✅ Add test for scatter chart

test/unit/specs/Scatter.spec.js

@@ -0,0 +1,64 @@
+import Vue from 'vue'
+import ScatterChart from 'src/examples/ScatterExample'
+
+describe('ScatterChart', () => {
+  let el
+
+  beforeEach(() => {
+    el = document.createElement('div')
+  })
+
+  it('should render a canvas', () => {
+    const vm = new Vue({
+      render: function (createElement) {
+        return createElement(
+          ScatterChart
+        )
+      },
+      components: { ScatterChart }
+    }).$mount(el)
+
+    expect(vm.$el.querySelector('#scatter-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.$el.querySelector('canvas')).to.exist
+  })
+
+  it('should change id based on prop', () => {
+    const vm = new Vue({
+      render: function (createElement) {
+        return createElement(
+          ScatterChart, {
+            props: {
+              chartId: 'linechartprop'
+            }
+          }
+        )
+      },
+      components: { ScatterChart }
+    }).$mount(el)
+
+    expect(vm.$el.querySelector('#linechartprop')).not.to.be.an('undefined')
+  })
+
+  it('should destroy chart instance', (done) => {
+    const vm = new Vue({
+      render: function (createElement) {
+        return createElement(
+          ScatterChart
+        )
+      },
+      components: { ScatterChart }
+    }).$mount(el)
+
+    expect(vm.$children[0]._chart.chart.ctx).not.to.be.null
+
+    vm.$destroy()
+
+    vm.$nextTick(() => {
+      vm.$forceUpdate()
+      expect(vm.$children[0]._chart.chart.ctx).to.be.null
+      done()
+    })
+  })
+})