Initial vue js setup

tests/unit/.eslintrc.js

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+module.exports = {
+  env: {
+    mocha: true
+  }
+}

tests/unit/example.spec.js

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+import { expect } from 'chai'
+import { shallowMount } from '@vue/test-utils'
+import HelloWorld from '@/components/HelloWorld.vue'
+
+describe('HelloWorld.vue', () => {
+  it('renders props.msg when passed', () => {
+    const msg = 'new message'
+    const wrapper = shallowMount(HelloWorld, {
+      propsData: { msg }
+    })
+    expect(wrapper.text()).to.include(msg)
+  })
+})