metro-bundler: fix integration test for OSS

Summary: This should fix the e2e test for OSS.

Reviewed By: cpojer

Differential Revision: D5164267

fbshipit-source-id: d858b4811f0eb80ca7363177f4f384b66af13994

package.json

@@ -28,7 +28,7 @@
       "/node_modules/",
       "/website/",
       "local-cli/templates/",
-      "packager/integration_tests/__tests__/basic_bundle-test.js"
+      "packager/src/integration_tests/__tests__/basic_bundle-test.js"
     ],
     "haste": {
       "defaultPlatform": "ios",

packager/integration_tests/__tests__/basic_bundle-test.js

@@ -1,43 +0,0 @@
-/**
- * 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.
- *
- * @format
- */
-
-'use strict';
-
-jest.disableAutomock();
-jest.useRealTimers();
-
-const Packager = require('../..');
-
-const path = require('path');
-
-jasmine.DEFAULT_TIMEOUT_INTERVAL = 30 * 1000;
-
-const INPUT_PATH = path.resolve(__dirname, '../basic_bundle');
-const POLYFILLS_PATH = path.resolve(__dirname, '../../src/Resolver/polyfills');
-
-describe('basic_bundle', () => {
-  it('bundles package as expected', async () => {
-    const bundle = await Packager.buildBundle(
-      {
-        projectRoots: [INPUT_PATH, POLYFILLS_PATH],
-        transformCache: Packager.TransformCaching.none(),
-        transformModulePath: require.resolve('../../transformer'),
-      },
-      {
-        dev: false,
-        entryFile: path.join(INPUT_PATH, 'TestBundle.js'),
-        platform: 'ios',
-      },
-    );
-    const absPathRe = new RegExp(INPUT_PATH, 'g');
-    expect(bundle.getSource().replace(absPathRe, '')).toMatchSnapshot();
-  });
-});

packager/src/integration_tests/__tests__/__snapshots__/basic_bundle-test.js.snap

@@ -143,12 +143,9 @@ function moduleThrewError(id, error) {
 }
 
 if (__DEV__) {
-  var createHotReloadingObject;
-
-  (function () {
   _require.Systrace = { beginEvent: function beginEvent() {}, endEvent: function endEvent() {} };
 
-    createHotReloadingObject = function createHotReloadingObject() {
+  var createHotReloadingObject = function createHotReloadingObject() {
     var hot = {
       acceptCallback: null,
       accept: function accept(callback) {
@@ -164,7 +161,7 @@ if (__DEV__) {
     }
 
     var notAccepted = dependentModules.filter(function (module) {
-        return !accept(module, undefined, inverseDependencies);
+      return !_accept(module, undefined, inverseDependencies);
     });
 
     var parents = [];
@@ -179,7 +176,7 @@ if (__DEV__) {
     return acceptAll(parents, inverseDependencies);
   };
 
-    var accept = function accept(id, factory, inverseDependencies) {
+  var _accept = function _accept(id, factory, inverseDependencies) {
     var mod = modules[id];
 
     if (!mod && factory) {
@@ -213,8 +210,7 @@ if (__DEV__) {
     }
   };
 
-    global.__accept = accept;
-  })();
+  global.__accept = _accept;
 }
 })(typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : this);
 (function(global) {
@@ -748,7 +744,6 @@ if (Number.MIN_SAFE_INTEGER === undefined) {
   });
 }
 if (!Number.isNaN) {
-  (function () {
   var globalIsNaN = global.isNaN;
   Object.defineProperty(Number, 'isNaN', {
     configurable: true,
@@ -758,7 +753,6 @@ if (!Number.isNaN) {
     },
     writable: true
   });
-  })();
 }
 })(typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : this);
 (function(global) {
@@ -1255,34 +1249,27 @@ __d(/* /TestBundle.js */function(global, require, module, exports) {
 
 'use strict';
 
-var Bar = require(12     ); // 12 = ./Bar
-var Foo = require(13     ); // 13 = ./Foo
-
-module.exports = { Foo: Foo, Bar: Bar };
+module.exports = { Foo: require(12     ), Bar: require(15     ) }; // 15 = ./Bar // 12 = ./Foo
 }, 0);
-__d(/* /Bar.js */function(global, require, module, exports) {
-
-'use strict';
-
-var Foo = require(13     ); // 13 = ./Foo
-
-module.exports = { type: 'bar', foo: Foo.type };
-}, 12);
 __d(/* /Foo.js */function(global, require, module, exports) {
 
 'use strict';
 
-var asset = require(14          ); // 14 = ./test.png
-
-module.exports = { type: 'foo', asset: asset };
+module.exports = { type: 'foo', asset: require(13          ) }; // 13 = ./test.png
+}, 12);
+__d(/* /test.png */function(global, require, module, exports) {module.exports=require(14                                          ).registerAsset({\\"__packager_asset\\":true,\\"httpServerLocation\\":\\"/assets\\",\\"width\\":8,\\"height\\":8,\\"scales\\":[1],\\"hash\\":\\"77d45c1f7fa73c0f6c444a830dc42f67\\",\\"name\\":\\"test\\",\\"type\\":\\"png\\"}); // 14 = react-native/Libraries/Image/AssetRegistry
 }, 13);
-__d(/* /test.png */function(global, require, module, exports) {module.exports=require(15                                          ).registerAsset({\\"__packager_asset\\":true,\\"httpServerLocation\\":\\"/assets\\",\\"width\\":8,\\"height\\":8,\\"scales\\":[1],\\"hash\\":\\"77d45c1f7fa73c0f6c444a830dc42f67\\",\\"name\\":\\"test\\",\\"type\\":\\"png\\"}); // 15 = react-native/Libraries/Image/AssetRegistry
-}, 14);
 __d(/* /node_modules/react-native/Libraries/Image/AssetRegistry.js */function(global, require, module, exports) {
 
 'use strict';
 
 module.export = {};
+}, 14);
+__d(/* /Bar.js */function(global, require, module, exports) {
+
+'use strict';
+
+module.exports = { type: 'bar', foo: require(12     ).type }; // 12 = ./Foo
 }, 15);
 ;require(0);"
 `;

packager/src/integration_tests/__tests__/basic_bundle-test.js

@@ -0,0 +1,89 @@
+/**
+ * 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.
+ *
+ * @format
+ */
+
+'use strict';
+
+jest.disableAutomock();
+jest.useRealTimers();
+
+jest.dontMock('fs');
+jest.dontMock('graceful-fs');
+
+/**
+ * Don't waste time creating a worker-farm from jest-haste-map, use the function
+ * directly instead.
+ */
+jest.mock('worker-farm', () => {
+  function workerFarm(opts, workerPath, methodNames) {
+    return require(workerPath);
+  }
+  workerFarm.end = () => {};
+  return workerFarm;
+});
+
+/**
+ * We replace the farm by a simple require, so that the worker sources are
+ * transformed and managed by jest.
+ */
+jest.mock('../../worker-farm', () => {
+  let ended = false;
+  function workerFarm(opts, workerPath, methodNames) {
+    const {Readable} = require('stream');
+    const methods = {};
+    const worker = require(workerPath);
+    methodNames.forEach(name => {
+      methods[name] = function() {
+        if (ended) {
+          throw new Error('worker farm was ended');
+        }
+        return worker[name].apply(null, arguments);
+      };
+    });
+    return {
+      stdout: new Readable({read() {}}),
+      stderr: new Readable({read() {}}),
+      methods,
+    };
+  }
+  workerFarm.end = () => {
+    ended = true;
+  };
+  return workerFarm;
+});
+
+const Packager = require('../..');
+
+const path = require('path');
+
+jasmine.DEFAULT_TIMEOUT_INTERVAL = 30 * 1000;
+
+const INPUT_PATH = path.resolve(__dirname, '../basic_bundle');
+const POLYFILLS_PATH = path.resolve(__dirname, '../../Resolver/polyfills');
+
+describe('basic_bundle', () => {
+  it('bundles package as expected', async () => {
+    const bundle = await Packager.buildBundle(
+      {
+        projectRoots: [INPUT_PATH, POLYFILLS_PATH],
+        transformCache: Packager.TransformCaching.none(),
+        transformModulePath: require.resolve('../../transformer'),
+        nonPersistent: true,
+      },
+      {
+        dev: false,
+        entryFile: path.join(INPUT_PATH, 'TestBundle.js'),
+        platform: 'ios',
+      },
+    );
+    const absPathRe = new RegExp(INPUT_PATH, 'g');
+    expect(bundle.getSource().replace(absPathRe, '')).toMatchSnapshot();
+  });
+});