Add linked modules test (facebook#1913)

fixtures/kitchensink/.template.dependencies.json

@@ -5,6 +5,7 @@
     "babel-polyfill": "6.20.0",
     "chai": "3.5.0",
     "jsdom": "9.8.3",
-    "mocha": "3.2.0"
+    "mocha": "3.2.0",
+    "test-integrity": "1.0.0"
   }
 }

fixtures/kitchensink/integration/webpack.test.js

@@ -44,6 +44,14 @@ describe('Integration', () => {
       );
     });
 
+    it('linked modules', async () => {
+      const doc = await initDOM('linked-modules');
+
+      expect(doc.getElementById('feature-linked-modules').textContent).to.equal(
+        '2.0.0'
+      );
+    });
+
     it('svg inclusion', async () => {
       const doc = await initDOM('svg-inclusion');
 

fixtures/kitchensink/src/App.js

@@ -111,6 +111,10 @@ class App extends Component {
         import('./features/webpack/JsonInclusion').then(f =>
           this.setFeature(f.default));
         break;
+      case 'linked-modules':
+        import('./features/webpack/LinkedModules').then(f =>
+          this.setFeature(f.default));
+        break;
       case 'node-path':
         import('./features/env/NodePath').then(f => this.setFeature(f.default));
         break;

fixtures/kitchensink/src/features/webpack/LinkedModules.js

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+import React from 'react';
+import './assets/style.css';
+import { test, version } from 'test-integrity';
+
+export default () => {
+  const v = version();
+  if (!test() || v !== '2.0.0') {
+    throw new Error('Functionality test did not pass.');
+  }
+  return <p id="feature-linked-modules">{v}</p>;
+};

fixtures/kitchensink/src/features/webpack/LinkedModules.test.js

@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+import React from 'react';
+import ReactDOM from 'react-dom';
+import { test, version } from 'test-integrity';
+import LinkedModules from './LinkedModules';
+
+describe('linked modules', () => {
+  it('has integrity', () => {
+    expect(test());
+    expect(version() === '2.0.0');
+  });
+
+  it('renders without crashing', () => {
+    const div = document.createElement('div');
+    ReactDOM.render(<LinkedModules />, div);
+  });
+});