test: tests for e2e plugins

packages/@vue/cli-plugin-e2e-cypress/__tests__/.eslintrc

@@ -0,0 +1,5 @@
+{
+  "rules": {
+    "vue-libs/no-async-functions": 0
+  }
+}

packages/@vue/cli-plugin-e2e-cypress/__tests__/cypressPlugin.spec.js

@@ -0,0 +1,18 @@
+jest.setTimeout(30000)
+
+const create = require('@vue/cli-test-utils/createTestProject')
+
+test('should work', async () => {
+  const project = await create('e2e-cypress', {
+    plugins: {
+      '@vue/cli-plugin-babel': {},
+      '@vue/cli-plugin-e2e-cypress': {}
+    }
+  })
+
+  const config = JSON.parse(await project.read('cypress.json'))
+  config.videoRecording = false
+  await project.write('cypress.json', JSON.stringify(config))
+
+  await project.run(`vue-cli-service e2e`)
+})

packages/@vue/cli-plugin-e2e-cypress/index.js

@@ -28,6 +28,13 @@ module.exports = (api, options) => {
         runner.on('exit', () => server.close())
         runner.on('error', () => server.close())
       }
+
+      if (process.env.VUE_CLI_TEST) {
+        runner.on('exit', code => {
+          process.exit(code)
+        })
+      }
+
       return runner
     })
   }

packages/@vue/cli-plugin-e2e-nightwatch/__tests__/.eslintrc

@@ -0,0 +1,5 @@
+{
+  "rules": {
+    "vue-libs/no-async-functions": 0
+  }
+}

packages/@vue/cli-plugin-e2e-nightwatch/__tests__/nightwatchPlugin.spec.js

@@ -0,0 +1,13 @@
+jest.setTimeout(20000)
+
+const create = require('@vue/cli-test-utils/createTestProject')
+
+test('should work', async () => {
+  const project = await create('e2e-nightwatch', {
+    plugins: {
+      '@vue/cli-plugin-babel': {},
+      '@vue/cli-plugin-e2e-nightwatch': {}
+    }
+  })
+  await project.run(`vue-cli-service e2e`)
+})

packages/@vue/cli-plugin-e2e-nightwatch/index.js

@@ -39,6 +39,13 @@ module.exports = (api, options) => {
         runner.on('exit', () => server.close())
         runner.on('error', () => server.close())
       }
+
+      if (process.env.VUE_CLI_TEST) {
+        runner.on('exit', code => {
+          process.exit(code)
+        })
+      }
+
       return runner
     })
   })