Add sample unit test

package.json

@@ -9,6 +9,7 @@
     "start": "node build/dev-server.js",
     "build": "cross-env FULL_BUNDLE=false webpack --progress --config webpack.build.config.js",
     "unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
+    "unit:watch": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --watch",
     "e2e": "node test/e2e/runner.js",
     "test": "npm run unit && npm run e2e",
     "lint": "eslint --ext .js,.vue src test/unit/specs test/e2e/specs"

test/unit/index.js

@@ -9,5 +9,5 @@ testsContext.keys().forEach(testsContext)
 // require all src files except main.js for coverage.
 // you can also change this to match only the subset of files that
 // you want coverage for.
-const srcContext = require.context('../../src', true, /^\.\/(?!main(\.js)?$)/)
+const srcContext = require.context('../../src', true, /^\.\/(?!main\.js$).+\.(js|vue)$/i)
 srcContext.keys().forEach(srcContext)

test/unit/specs/FormWizard.spec.js

@@ -0,0 +1,28 @@
+import Vue from 'vue'
+import VueFormWizard from './../../../src/components/FormWizard.vue'
+import TabContent from './../../../src/components/TabContent.vue'
+
+function init () {
+  Vue.component('form-wizard', VueFormWizard)
+  Vue.component('tab-content', TabContent)
+}
+
+describe('FormWizard.vue', () => {
+  beforeEach(() => {
+    init()
+  })
+  it('should render correct contents', (done) => {
+    const vm = new Vue({
+      template: `<form-wizard ref="wizard">
+                   <tab-content>First</tab-content> 
+                   <tab-content>Second</tab-content> 
+                </form-wizard>`
+    }).$mount()
+
+    let wizard = vm.$children[0]
+    let wizardComp = vm.$refs.wizard
+    expect(wizard.$children.length).to.equal(2)
+    expect(wizardComp.activeTabIndex).to.equal(0)
+    done()
+  })
+})

test/unit/specs/Hello.spec.js

@@ -1,11 +0,0 @@
-import Vue from 'vue'
-import Hello from '@/components/Hello'
-
-describe('Hello.vue', () => {
-  it('should render correct contents', () => {
-    const Constructor = Vue.extend(Hello)
-    const vm = new Constructor().$mount()
-    expect(vm.$el.querySelector('.hello h1').textContent)
-      .to.equal('Welcome to Your Vue.js App')
-  })
-})