fix(test): e2e w/ typescript (#933)

* fix(typescript): when using router e2e fail

When using typescript and router, the pag return
"Welcome to Your Vue.js App" instead of the
"+ TypeScript" phrase.

* feat(typescript e2e tests): tested cypress and nightwatch

* fix(typescript e2e test): timeout issue

Author: elevatebart

packages/@vue/cli-plugin-typescript/__tests__/tsPluginE2e.spec.js

@@ -0,0 +1,34 @@
+jest.setTimeout(40000)
+
+const create = require('@vue/cli-test-utils/createTestProject')
+
+test('cypress', async () => {
+  const project = await create('ts-e2e-cypress', {
+    plugins: {
+      '@vue/cli-plugin-typescript': {},
+      '@vue/cli-plugin-e2e-cypress': {}
+    }
+  })
+  await project.run(`vue-cli-service e2e`)
+})
+
+test('cypress with router', async () => {
+  const project = await create('ts-e2e-cypress', {
+    router: true,
+    plugins: {
+      '@vue/cli-plugin-typescript': {},
+      '@vue/cli-plugin-e2e-cypress': {}
+    }
+  })
+  await project.run(`vue-cli-service e2e`)
+})
+
+test('nightwatch', async () => {
+  const project = await create('ts-e2e-nightwatch', {
+    plugins: {
+      '@vue/cli-plugin-typescript': {},
+      '@vue/cli-plugin-e2e-cypress': {}
+    }
+  })
+  await project.run(`vue-cli-service e2e`)
+})

packages/@vue/cli-plugin-typescript/generator/template/src/views/Home.vue

@@ -2,7 +2,7 @@
 <template>
   <div class="home">
     <img src="../assets/logo.png">
-    <HelloWorld msg="Welcome to Your Vue.js App"/>
+    <HelloWorld msg="Welcome to Your Vue.js + TypeScript App"/>
   </div>
 </template>