Update Jest APIs on fbsource

Reviewed By: javache

Differential Revision: D3229435

fb-gh-sync-id: b0e252d69e1f399a946fca6e98ef62ff44c2ef9c
fbshipit-source-id: b0e252d69e1f399a946fca6e98ef62ff44c2ef9c

Examples/Movies/__tests__/getImageSource-test.js

@@ -3,7 +3,7 @@
  */
 'use strict';
 
-jest.dontMock('../getImageSource');
+jest.unmock('../getImageSource');
 
 var getImageSource = require('../getImageSource');
 

Libraries/Animated/src/__tests__/Animated-test.js

@@ -9,7 +9,7 @@
 'use strict';
 
 jest
-  .autoMockOff()
+  .disableAutomock()
   .setMock('Text', {})
   .setMock('View', {})
   .setMock('Image', {})
@@ -22,7 +22,7 @@ describe('Animated', () => {
   it('works end to end', () => {
     var anim = new Animated.Value(0);
 
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
 
     var node = new Animated.__PropsOnlyForTests({
       style: {
@@ -75,7 +75,7 @@ describe('Animated', () => {
 
   it('does not detach on updates', () => {
     var anim = new Animated.Value(0);
-    anim.__detach = jest.genMockFunction();
+    anim.__detach = jest.fn();
 
     var c = new Animated.View();
     c.props = {
@@ -101,11 +101,11 @@ describe('Animated', () => {
   it('stops animation when detached', () => {
     // jest environment doesn't have cancelAnimationFrame :(
     if (!window.cancelAnimationFrame) {
-      window.cancelAnimationFrame = jest.genMockFunction();
+      window.cancelAnimationFrame = jest.fn();
     }
 
     var anim = new Animated.Value(0);
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
 
     var c = new Animated.View();
     c.props = {
@@ -125,14 +125,14 @@ describe('Animated', () => {
 
   it('triggers callback when spring is at rest', () => {
     var anim = new Animated.Value(0);
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
     Animated.spring(anim, {toValue: 0, velocity: 0}).start(callback);
     expect(callback).toBeCalled();
   });
 
   it('send toValue when a spring stops', () => {
     var anim = new Animated.Value(0);
-    var listener = jest.genMockFunction();
+    var listener = jest.fn();
     anim.addListener(listener);
     Animated.spring(anim, {toValue: 15}).start();
     jest.runAllTimers();
@@ -148,15 +148,15 @@ describe('Animated', () => {
 describe('Animated Sequence', () => {
 
   it('works with an empty sequence', () => {
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
     Animated.sequence([]).start(cb);
     expect(cb).toBeCalledWith({finished: true});
   });
 
   it('sequences well', () => {
-    var anim1 = {start: jest.genMockFunction()};
+    var anim1 = {start: jest.fn()};
-    var anim2 = {start: jest.genMockFunction()};
+    var anim2 = {start: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     var seq = Animated.sequence([anim1, anim2]);
 
@@ -179,9 +179,9 @@ describe('Animated Sequence', () => {
   });
 
   it('supports interrupting sequence', () => {
-    var anim1 = {start: jest.genMockFunction()};
+    var anim1 = {start: jest.fn()};
-    var anim2 = {start: jest.genMockFunction()};
+    var anim2 = {start: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     Animated.sequence([anim1, anim2]).start(cb);
 
@@ -193,9 +193,9 @@ describe('Animated Sequence', () => {
   });
 
   it('supports stopping sequence', () => {
-    var anim1 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim1 = {start: jest.fn(), stop: jest.fn()};
-    var anim2 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim2 = {start: jest.fn(), stop: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     var seq = Animated.sequence([anim1, anim2]);
     seq.start(cb);
@@ -215,14 +215,14 @@ describe('Animated Sequence', () => {
 describe('Animated Parallel', () => {
 
   it('works with an empty parallel', () => {
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
     Animated.parallel([]).start(cb);
     expect(cb).toBeCalledWith({finished: true});
   });
 
   it('works with an empty element in array', () => {
-    var anim1 = {start: jest.genMockFunction()};
+    var anim1 = {start: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
     Animated.parallel([null, anim1]).start(cb);
 
     expect(anim1.start).toBeCalled();
@@ -232,9 +232,9 @@ describe('Animated Parallel', () => {
   });
 
   it('parellelizes well', () => {
-    var anim1 = {start: jest.genMockFunction()};
+    var anim1 = {start: jest.fn()};
-    var anim2 = {start: jest.genMockFunction()};
+    var anim2 = {start: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     var par = Animated.parallel([anim1, anim2]);
 
@@ -255,9 +255,9 @@ describe('Animated Parallel', () => {
   });
 
   it('supports stopping parallel', () => {
-    var anim1 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim1 = {start: jest.fn(), stop: jest.fn()};
-    var anim2 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim2 = {start: jest.fn(), stop: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     var seq = Animated.parallel([anim1, anim2]);
     seq.start(cb);
@@ -276,10 +276,10 @@ describe('Animated Parallel', () => {
 
 
   it('does not call stop more than once when stopping', () => {
-    var anim1 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim1 = {start: jest.fn(), stop: jest.fn()};
-    var anim2 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim2 = {start: jest.fn(), stop: jest.fn()};
-    var anim3 = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim3 = {start: jest.fn(), stop: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
 
     var seq = Animated.parallel([anim1, anim2, anim3]);
     seq.start(cb);
@@ -306,8 +306,8 @@ describe('Animated Parallel', () => {
 
 describe('Animated delays', () => {
   it('should call anim after delay in sequence', () => {
-    var anim = {start: jest.genMockFunction(), stop: jest.genMockFunction()};
+    var anim = {start: jest.fn(), stop: jest.fn()};
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
     Animated.sequence([
       Animated.delay(1000),
       anim,
@@ -319,7 +319,7 @@ describe('Animated delays', () => {
     expect(cb).toBeCalledWith({finished: true});
   });
   it('should run stagger to end', () => {
-    var cb = jest.genMockFunction();
+    var cb = jest.fn();
     Animated.stagger(1000, [
       Animated.delay(1000),
       Animated.delay(1000),
@@ -341,7 +341,7 @@ describe('Animated Events', () => {
   });
   it('should call listeners', () => {
     var value = new Animated.Value(0);
-    var listener = jest.genMockFunction();
+    var listener = jest.fn();
     var handler = Animated.event(
       [{foo: value}],
       {listener},
@@ -366,14 +366,14 @@ describe('Animated Interactions', () => {
   });
 
   afterEach(()=> {
-    jest.dontMock('InteractionManager');
+    jest.unmock('InteractionManager');
   });
 
   it('registers an interaction by default', () => {
     InteractionManager.createInteractionHandle.mockReturnValue(777);
 
     var value = new Animated.Value(0);
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
     Animated.timing(value, {
       toValue: 100,
       duration: 100,
@@ -387,7 +387,7 @@ describe('Animated Interactions', () => {
 
   it('does not register an interaction when specified', () => {
     var value = new Animated.Value(0);
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
     Animated.timing(value, {
       toValue: 100,
       duration: 100,
@@ -451,7 +451,7 @@ describe('Animated Vectors', () => {
   it('should animate vectors', () => {
     var vec = new Animated.ValueXY();
 
-    var callback = jest.genMockFunction();
+    var callback = jest.fn();
 
     var node = new Animated.__PropsOnlyForTests({
       style: {
@@ -536,7 +536,7 @@ describe('Animated Vectors', () => {
 describe('Animated Listeners', () => {
   it('should get updates', () => {
     var value1 = new Animated.Value(0);
-    var listener = jest.genMockFunction();
+    var listener = jest.fn();
     var id = value1.addListener(listener);
     value1.setValue(42);
     expect(listener.mock.calls.length).toBe(1);
@@ -554,7 +554,7 @@ describe('Animated Listeners', () => {
 
   it('should removeAll', () => {
     var value1 = new Animated.Value(0);
-    var listener = jest.genMockFunction();
+    var listener = jest.fn();
     [1,2,3,4].forEach(() => value1.addListener(listener));
     value1.setValue(42);
     expect(listener.mock.calls.length).toBe(4);

Libraries/Animated/src/__tests__/AnimatedNative-test.js

@@ -9,7 +9,7 @@
 'use strict';
 
 jest
-  .autoMockOff()
+  .disableAutomock()
   .setMock('Text', {})
   .setMock('View', {})
   .setMock('Image', {})
@@ -24,19 +24,19 @@ describe('Animated', () => {
 
   beforeEach(() => {
     var nativeAnimatedModule = require('NativeModules').NativeAnimatedModule;
-    nativeAnimatedModule.createAnimatedNode = jest.genMockFunction();
+    nativeAnimatedModule.createAnimatedNode = jest.fn();
-    nativeAnimatedModule.connectAnimatedNodes = jest.genMockFunction();
+    nativeAnimatedModule.connectAnimatedNodes = jest.fn();
-    nativeAnimatedModule.disconnectAnimatedNodes = jest.genMockFunction();
+    nativeAnimatedModule.disconnectAnimatedNodes = jest.fn();
-    nativeAnimatedModule.startAnimatingNode = jest.genMockFunction();
+    nativeAnimatedModule.startAnimatingNode = jest.fn();
-    nativeAnimatedModule.stopAnimation = jest.genMockFunction();
+    nativeAnimatedModule.stopAnimation = jest.fn();
-    nativeAnimatedModule.setAnimatedNodeValue = jest.genMockFunction();
+    nativeAnimatedModule.setAnimatedNodeValue = jest.fn();
-    nativeAnimatedModule.connectAnimatedNodeToView = jest.genMockFunction();
+    nativeAnimatedModule.connectAnimatedNodeToView = jest.fn();
-    nativeAnimatedModule.disconnectAnimatedNodeFromView = jest.genMockFunction();
+    nativeAnimatedModule.disconnectAnimatedNodeFromView = jest.fn();
-    nativeAnimatedModule.dropAnimatedNode = jest.genMockFunction();
+    nativeAnimatedModule.dropAnimatedNode = jest.fn();
 
     // jest environment doesn't have cancelAnimationFrame :(
     if (!window.cancelAnimationFrame) {
-      window.cancelAnimationFrame = jest.genMockFunction();
+      window.cancelAnimationFrame = jest.fn();
     }
   });
 

Libraries/Animated/src/__tests__/Easing-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.dontMock('Easing');
+jest.unmock('Easing');
 
 var Easing = require('Easing');
 describe('Easing', () => {

Libraries/Animated/src/__tests__/Interpolation-test.js

@@ -9,9 +9,9 @@
 'use strict';
 
 jest
-  .dontMock('Interpolation')
+  .unmock('Interpolation')
-  .dontMock('Easing')
+  .unmock('Easing')
-  .dontMock('normalizeColor');
+  .unmock('normalizeColor');
 
 var Interpolation = require('Interpolation');
 var Easing = require('Easing');

Libraries/Animated/src/__tests__/bezier-test.js

@@ -1,6 +1,6 @@
 /* eslint-disable */
 
-jest.dontMock('bezier');
+jest.unmock('bezier');
 var bezier = require('bezier');
 
 var identity = function (x) { return x; };

Libraries/BatchedBridge/BatchedBridgedModules/__mocks__/NativeModules.js

@@ -10,21 +10,19 @@ var NativeModules = {
     }),
   },
   Timing: {
-    createTimer: jest.genMockFunction(),
+    createTimer: jest.fn(),
-    deleteTimer: jest.genMockFunction(),
+    deleteTimer: jest.fn(),
   },
   GraphPhotoUpload: {
-    upload: jest.genMockFunction(),
+    upload: jest.fn(),
   },
   FacebookSDK: {
-    login: jest.genMockFunction(),
+    login: jest.fn(),
-    logout: jest.genMockFunction(),
+    logout: jest.fn(),
-    queryGraphPath: jest.genMockFunction().mockImpl(
+    queryGraphPath: jest.fn((path, method, params, callback) => callback()),
-      (path, method, params, callback) => callback()
-    ),
   },
   DataManager: {
-    queryData: jest.genMockFunction(),
+    queryData: jest.fn(),
   },
   UIManager: {
     customBubblingEventTypes: {},
@@ -38,10 +36,10 @@ var NativeModules = {
     },
   },
   AsyncLocalStorage: {
-    getItem: jest.genMockFunction(),
+    getItem: jest.fn(),
-    setItem: jest.genMockFunction(),
+    setItem: jest.fn(),
-    removeItem: jest.genMockFunction(),
+    removeItem: jest.fn(),
-    clear: jest.genMockFunction(),
+    clear: jest.fn(),
   },
   SourceCode: {
     scriptURL: null,
@@ -52,10 +50,10 @@ var NativeModules = {
   },
   ModalFullscreenViewManager: {},
   AlertManager: {
-    alertWithArgs: jest.genMockFunction(),
+    alertWithArgs: jest.fn(),
   },
   Clipboard: {
-    setString: jest.genMockFunction(),
+    setString: jest.fn(),
   },
 };
 

Libraries/CustomComponents/NavigationExperimental/__tests__/NavigationLegacyNavigatorRouteStack-test.js

@@ -29,7 +29,7 @@
  */
 'use strict';
 
-jest.dontMock('NavigationLegacyNavigatorRouteStack');
+jest.unmock('NavigationLegacyNavigatorRouteStack');
 
 const NavigationLegacyNavigatorRouteStack = require('NavigationLegacyNavigatorRouteStack');
 

Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationContext-test.js

@@ -25,7 +25,7 @@
 'use strict';
 
 jest
-  .autoMockOff()
+  .disableAutomock()
   .mock('ErrorUtils');
 
 var NavigationContext = require('NavigationContext');

Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationEvent-test.js

@@ -26,8 +26,8 @@
 'use strict';
 
 jest
-  .dontMock('NavigationEvent')
+  .unmock('NavigationEvent')
-  .dontMock('fbjs/lib/invariant');
+  .unmock('fbjs/lib/invariant');
 
 var NavigationEvent = require('NavigationEvent');
 

Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationEventEmitter-test.js

@@ -25,12 +25,12 @@
 'use strict';
 
 jest
-  .dontMock('EmitterSubscription')
+  .unmock('EmitterSubscription')
-  .dontMock('EventSubscription')
+  .unmock('EventSubscription')
-  .dontMock('EventEmitter')
+  .unmock('EventEmitter')
-  .dontMock('EventSubscriptionVendor')
+  .unmock('EventSubscriptionVendor')
-  .dontMock('NavigationEvent')
+  .unmock('NavigationEvent')
-  .dontMock('NavigationEventEmitter');
+  .unmock('NavigationEventEmitter');
 
 var NavigationEventEmitter = require('NavigationEventEmitter');
 

Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationRouteStack-test.js

@@ -26,7 +26,7 @@
 
 
 jest
- .autoMockOff()
+ .disableAutomock()
  .mock('ErrorUtils');
 
 var NavigationRouteStack = require('NavigationRouteStack');

Libraries/CustomComponents/Navigator/Navigation/__tests__/NavigationTreeNode-test.js

@@ -5,9 +5,9 @@
 'use strict';
 
 jest
-  .dontMock('NavigationTreeNode')
+  .unmock('NavigationTreeNode')
-  .dontMock('fbjs/lib/invariant')
+  .unmock('fbjs/lib/invariant')
-  .dontMock('immutable');
+  .unmock('immutable');
 
 var NavigationTreeNode = require('NavigationTreeNode');
 

Libraries/Image/__tests__/resolveAssetSource-test.js

@@ -9,10 +9,10 @@
 'use strict';
 
 jest
-  .dontMock('AssetRegistry')
+  .unmock('AssetRegistry')
-  .dontMock('AssetSourceResolver')
+  .unmock('AssetSourceResolver')
-  .dontMock('../resolveAssetSource')
+  .unmock('../resolveAssetSource')
-  .dontMock('../../../local-cli/bundle/assetPathUtils');
+  .unmock('../../../local-cli/bundle/assetPathUtils');
 
 var AssetRegistry = require('AssetRegistry');
 var Platform = require('Platform');

Libraries/Interaction/__tests__/InteractionManager-test.js

@@ -5,7 +5,7 @@
 'use strict';
 
 jest
-  .autoMockOff()
+  .disableAutomock()
   .mock('ErrorUtils')
   .mock('BatchedBridge');
 
@@ -22,8 +22,8 @@ describe('InteractionManager', () => {
     jest.resetModuleRegistry();
     InteractionManager = require('InteractionManager');
 
-    interactionStart = jest.genMockFunction();
+    interactionStart = jest.fn();
-    interactionComplete = jest.genMockFunction();
+    interactionComplete = jest.fn();
 
     InteractionManager.addListener(
       InteractionManager.Events.interactionStart,
@@ -84,7 +84,7 @@ describe('InteractionManager', () => {
   });
 
   it('runs tasks asynchronously when there are interactions', () => {
-    var task = jest.genMockFunction();
+    var task = jest.fn();
     InteractionManager.runAfterInteractions(task);
     expect(task).not.toBeCalled();
 
@@ -93,7 +93,7 @@ describe('InteractionManager', () => {
   });
 
   it('runs tasks when interactions complete', () => {
-    var task = jest.genMockFunction();
+    var task = jest.fn();
     var handle = InteractionManager.createInteractionHandle();
     InteractionManager.runAfterInteractions(task);
 
@@ -106,8 +106,8 @@ describe('InteractionManager', () => {
   });
 
   it('does not run tasks twice', () => {
-    var task1 = jest.genMockFunction();
+    var task1 = jest.fn();
-    var task2 = jest.genMockFunction();
+    var task2 = jest.fn();
     InteractionManager.runAfterInteractions(task1);
     jest.runAllTimers();
 
@@ -118,10 +118,10 @@ describe('InteractionManager', () => {
   });
 
   it('runs tasks added while processing previous tasks', () => {
-    var task1 = jest.genMockFunction().mockImplementation(() => {
+    var task1 = jest.fn(() => {
       InteractionManager.runAfterInteractions(task2);
     });
-    var task2 = jest.genMockFunction();
+    var task2 = jest.fn();
 
     InteractionManager.runAfterInteractions(task1);
     expect(task2).not.toBeCalled();
@@ -138,7 +138,7 @@ describe('promise tasks', () => {
   let BatchedBridge;
   let sequenceId;
   function createSequenceTask(expectedSequenceId) {
-    return jest.genMockFunction().mockImplementation(() => {
+    return jest.fn(() => {
       expect(++sequenceId).toBe(expectedSequenceId);
     });
   }
@@ -151,7 +151,7 @@ describe('promise tasks', () => {
 
 
   it('should run a basic promise task', () => {
-    const task1 = jest.genMockFunction().mockImplementation(() => {
+    const task1 = jest.fn(() => {
       expect(++sequenceId).toBe(1);
       return new Promise(resolve => resolve());
     });
@@ -161,14 +161,14 @@ describe('promise tasks', () => {
   });
 
   it('should handle nested promises', () => {
-    const task1 = jest.genMockFunction().mockImplementation(() => {
+    const task1 = jest.fn(() => {
       expect(++sequenceId).toBe(1);
       return new Promise(resolve => {
         InteractionManager.runAfterInteractions({gen: task2, name: 'gen2'})
           .then(resolve);
       });
     });
-    const task2 = jest.genMockFunction().mockImplementation(() => {
+    const task2 = jest.fn(() => {
       expect(++sequenceId).toBe(2);
       return new Promise(resolve => resolve());
     });
@@ -180,7 +180,7 @@ describe('promise tasks', () => {
 
   it('should pause promise tasks during interactions then resume', () => {
     const task1 = createSequenceTask(1);
-    const task2 = jest.genMockFunction().mockImplementation(() => {
+    const task2 = jest.fn(() => {
       expect(++sequenceId).toBe(2);
       return new Promise(resolve => {
         setTimeout(() => {
@@ -238,7 +238,7 @@ describe('promise tasks', () => {
 
   const bigAsyncTest = () => {
     const task1 = createSequenceTask(1);
-    const task2 = jest.genMockFunction().mockImplementation(() => {
+    const task2 = jest.fn(() => {
       expect(++sequenceId).toBe(2);
       return new Promise(resolve => {
         InteractionManager.runAfterInteractions(task3);
@@ -249,7 +249,7 @@ describe('promise tasks', () => {
       });
     });
     const task3 = createSequenceTask(3);
-    const task4 = jest.genMockFunction().mockImplementation(() => {
+    const task4 = jest.fn(() => {
       expect(++sequenceId).toBe(4);
       return new Promise(resolve => {
         InteractionManager.runAfterInteractions(task5).then(resolve);

Libraries/Interaction/__tests__/InteractionMixin-test.js

@@ -9,7 +9,7 @@
  */
 'use strict';
 
-jest.dontMock('InteractionMixin');
+jest.unmock('InteractionMixin');
 
 describe('InteractionMixin', () => {
   var InteractionManager;
@@ -36,7 +36,7 @@ describe('InteractionMixin', () => {
   });
 
   it('should schedule tasks', () => {
-    var task = jest.genMockFunction();
+    var task = jest.fn();
     component.runAfterInteractions(task);
     expect(InteractionManager.runAfterInteractions).toBeCalledWith(task);
   });

Libraries/Interaction/__tests__/TaskQueue-test.js

@@ -4,7 +4,7 @@
 
 'use strict';
 
-jest.dontMock('TaskQueue');
+jest.unmock('TaskQueue');
 
 function expectToBeCalledOnce(fn) {
   expect(fn.mock.calls.length).toBe(1);
@@ -23,13 +23,13 @@ describe('TaskQueue', () => {
   let onMoreTasks;
   let sequenceId;
   function createSequenceTask(expectedSequenceId) {
-    return jest.genMockFunction().mockImplementation(() => {
+    return jest.fn(() => {
       expect(++sequenceId).toBe(expectedSequenceId);
     });
   }
   beforeEach(() => {
     jest.resetModuleRegistry();
-    onMoreTasks = jest.genMockFunction();
+    onMoreTasks = jest.fn();
     const TaskQueue = require('TaskQueue');
     taskQueue = new TaskQueue({onMoreTasks});
     sequenceId = 0;
@@ -45,7 +45,7 @@ describe('TaskQueue', () => {
   });
 
   it('should handle blocking promise task', () => {
-    const task1 = jest.genMockFunction().mockImplementation(() => {
+    const task1 = jest.fn(() => {
       return new Promise(resolve => {
         setTimeout(() => {
           expect(++sequenceId).toBe(1);
@@ -71,7 +71,7 @@ describe('TaskQueue', () => {
   });
 
   it('should handle nested simple tasks', () => {
-    const task1 = jest.genMockFunction().mockImplementation(() => {
+    const task1 = jest.fn(() => {
       expect(++sequenceId).toBe(1);
       taskQueue.enqueue({run: task3, name: 'run3'});
     });
@@ -88,7 +88,7 @@ describe('TaskQueue', () => {
   });
 
   it('should handle nested promises', () => {
-    const task1 = jest.genMockFunction().mockImplementation(() => {
+    const task1 = jest.fn(() => {
       return new Promise(resolve => {
         setTimeout(() => {
           expect(++sequenceId).toBe(1);
@@ -97,7 +97,7 @@ describe('TaskQueue', () => {
         }, 1);
       });
     });
-    const task2 = jest.genMockFunction().mockImplementation(() => {
+    const task2 = jest.fn(() => {
       return new Promise(resolve => {
         setTimeout(() => {
           expect(++sequenceId).toBe(2);

Libraries/JavaScriptAppEngine/Initialization/__tests__/parseErrorStack-test.js

@@ -9,7 +9,7 @@
 'use strict';
 
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 var parseErrorStack = require('parseErrorStack');
 

Libraries/NavigationExperimental/Reducer/__tests__/NavigationFindReducer-test.js

@@ -11,7 +11,7 @@
 'use strict';
 
 jest
- .dontMock('NavigationFindReducer');
+ .unmock('NavigationFindReducer');
 
 const NavigationFindReducer = require('NavigationFindReducer');
 

Libraries/NavigationExperimental/Reducer/__tests__/NavigationScenesReducer-test.js

@@ -9,7 +9,7 @@
  */
 'use strict';
 
-jest.dontMock('NavigationScenesReducer');
+jest.unmock('NavigationScenesReducer');
 
 const NavigationScenesReducer = require('NavigationScenesReducer');
 

Libraries/NavigationExperimental/Reducer/__tests__/NavigationStackReducer-test.js

@@ -11,8 +11,8 @@
 'use strict';
 
 jest
- .dontMock('NavigationStackReducer')
+ .unmock('NavigationStackReducer')
- .dontMock('NavigationStateUtils');
+ .unmock('NavigationStateUtils');
 
 jest.setMock('React', {Component() {}, PropTypes: {}});
 

Libraries/NavigationExperimental/Reducer/__tests__/NavigationTabsReducer-test.js

@@ -11,9 +11,9 @@
 'use strict';
 
 jest
- .dontMock('NavigationTabsReducer')
+ .unmock('NavigationTabsReducer')
- .dontMock('NavigationFindReducer')
+ .unmock('NavigationFindReducer')
- .dontMock('NavigationStateUtils');
+ .unmock('NavigationStateUtils');
 
 const NavigationTabsReducer = require('NavigationTabsReducer');
 

Libraries/NavigationExperimental/__tests__/NavigationStateUtils-test.js

@@ -11,7 +11,7 @@
 'use strict';
 
 jest
- .dontMock('NavigationStateUtils');
+ .unmock('NavigationStateUtils');
 
 var NavigationStateUtils = require('NavigationStateUtils');
 

Libraries/Network/__tests__/XMLHttpRequestBase-test.js

@@ -1,8 +1,8 @@
 'use strict';
 
 jest
-	.autoMockOff()
+	.disableAutomock()
-	.dontMock('XMLHttpRequestBase');
+	.unmock('XMLHttpRequestBase');
 
 const XMLHttpRequestBase = require('XMLHttpRequestBase');
 

Libraries/StyleSheet/__tests__/flattenStyle-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 var flattenStyle = require('flattenStyle');
 

Libraries/StyleSheet/__tests__/normalizeColor-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.dontMock('normalizeColor');
+jest.unmock('normalizeColor');
 
 var normalizeColor = require('normalizeColor');
 

Libraries/StyleSheet/__tests__/processColor-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 var processColor = require('processColor');
 

Libraries/StyleSheet/__tests__/setNormalizedColorAlpha-test.js

@@ -8,8 +8,8 @@
  */
 'use strict';
 
-jest.dontMock('setNormalizedColorAlpha');
+jest.unmock('setNormalizedColorAlpha');
-jest.dontMock('normalizeColor');
+jest.unmock('normalizeColor');
 
 var setNormalizedColorAlpha = require('setNormalizedColorAlpha');
 var normalizeColor = require('normalizeColor');

Libraries/Utilities/__mocks__/ErrorUtils.js

@@ -13,12 +13,12 @@ function reportError(error) {
 }
 
 var ErrorUtils = {
-  apply: jest.genMockFunction().mockImplementation(execute),
+  apply: jest.fn(execute),
-  applyWithGuard: jest.genMockFunction().mockImplementation(execute),
+  applyWithGuard: jest.fn(execute),
-  guard: jest.genMockFunction().mockImplementation(callback => callback),
+  guard: jest.fn(callback => callback),
-  inGuard: jest.genMockFunction().mockReturnValue(true),
+  inGuard: jest.fn().mockReturnValue(true),
-  reportError: jest.genMockFunction().mockImplementation(reportError),
+  reportError: jest.fn(reportError),
-  setGlobalHandler: jest.genMockFunction(),
+  setGlobalHandler: jest.fn(),
 };
 
 module.exports = ErrorUtils;

Libraries/Utilities/__mocks__/PixelRatio.js

@@ -5,20 +5,14 @@
 'use strict';
 
 const PixelRatio = {
-  get: jest.genMockFunction().mockReturnValue(2),
+  get: jest.fn().mockReturnValue(2),
-  getFontScale: jest.genMockFunction().mockImplementation(
+  getFontScale: jest.fn(() => PixelRatio.get()),
-    () => PixelRatio.get()
+  getPixelSizeForLayoutSize: jest.fn(layoutSize => Math.round(layoutSize * PixelRatio.get())),
-  ),
+  roundToNearestPixel: jest.fn(layoutSize => {
-  getPixelSizeForLayoutSize: jest.genMockFunction().mockImplementation(
+    const ratio = PixelRatio.get();
-    layoutSize => Math.round(layoutSize * PixelRatio.get())
+    return Math.round(layoutSize * ratio) / ratio;
-  ),
+  }),
-  roundToNearestPixel: jest.genMockFunction().mockImplementation(
+  startDetecting: jest.fn(),
-    layoutSize => {
-      const ratio = PixelRatio.get();
-      return Math.round(layoutSize * ratio) / ratio;
-    }
-  ),
-  startDetecting: jest.genMockFunction(),
 };
 
 module.exports = PixelRatio;

Libraries/Utilities/__tests__/MatrixMath-test.js

@@ -8,8 +8,8 @@
  */
 'use strict';
 
-jest.dontMock('MatrixMath');
+jest.unmock('MatrixMath');
-jest.dontMock('fbjs/lib/invariant');
+jest.unmock('fbjs/lib/invariant');
 
 var MatrixMath = require('MatrixMath');
 

Libraries/Utilities/__tests__/MessageQueue-test.js

@@ -8,8 +8,8 @@
  */
 'use strict';
 
-jest.dontMock('MessageQueue')
+jest.unmock('MessageQueue')
-  .dontMock('fbjs/lib/keyMirror');
+  .unmock('fbjs/lib/keyMirror');
 var MessageQueue = require('MessageQueue');
 
 let MODULE_IDS = 0;

Libraries/Utilities/__tests__/Platform-test.js

@@ -8,8 +8,8 @@
  */
 'use strict';
 
-jest.dontMock('../Platform.ios');
+jest.unmock('../Platform.ios');
-jest.dontMock('../Platform.android');
+jest.unmock('../Platform.android');
 
 var PlatformIOS = require('../Platform.ios');
 var PlatformAndroid = require('../Platform.android');

Libraries/Utilities/__tests__/utf8-test.js

@@ -9,7 +9,7 @@
 
  'use strict';
 
- jest.autoMockOff();
+ jest.disableAutomock();
 
  const {encode} = require('../utf8');
 

Libraries/Utilities/differ/__tests__/deepDiffer-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.dontMock('deepDiffer');
+jest.unmock('deepDiffer');
 var deepDiffer = require('deepDiffer');
 
 describe('deepDiffer', function() {

Libraries/WebSocket/__tests__/WebSocket-test.js

@@ -3,7 +3,7 @@
  */
 'use strict';
 
-jest.dontMock('WebSocket');
+jest.unmock('WebSocket');
 jest.setMock('NativeModules', {
   WebSocketModule: {
     connect: () => {}

packager/react-packager/src/Activity/__tests__/Activity-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 var Activity = require('../');
 
@@ -16,7 +16,7 @@ describe('Activity', () => {
   const origConsoleLog = console.log;
 
   beforeEach(() => {
-    console.log = jest.genMockFn();
+    console.log = jest.fn();
     jest.runOnlyPendingTimers();
   });
 

packager/react-packager/src/AssetServer/__tests__/AssetServer-test.js

@@ -9,7 +9,7 @@
 
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 jest
   .mock('crypto')
@@ -199,8 +199,8 @@ describe('AssetServer', () => {
   describe('assetServer.getAssetData', () => {
     pit('should get assetData', () => {
       const hash = {
-        update: jest.genMockFn(),
+        update: jest.fn(),
-        digest: jest.genMockFn(),
+        digest: jest.fn(),
       };
 
       hash.digest.mockImpl(() => 'wow such hash');
@@ -241,8 +241,8 @@ describe('AssetServer', () => {
 
     pit('should get assetData for non-png images', () => {
       const hash = {
-        update: jest.genMockFn(),
+        update: jest.fn(),
-        digest: jest.genMockFn(),
+        digest: jest.fn(),
       };
 
       hash.digest.mockImpl(() => 'wow such hash');

packager/react-packager/src/Bundler/__tests__/Bundle-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 const Bundle = require('../Bundle');
 const ModuleTransport = require('../../lib/ModuleTransport');
@@ -21,7 +21,7 @@ describe('Bundle', () => {
 
   beforeEach(() => {
     bundle = new Bundle({sourceMapUrl: 'test_url'});
-    bundle.getSourceMap = jest.genMockFn().mockImpl(() => {
+    bundle.getSourceMap = jest.fn(() => {
       return 'test-source-map';
     });
   });

packager/react-packager/src/Bundler/__tests__/Bundler-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 jest
   .setMock('worker-farm', () => () => undefined)
@@ -68,8 +68,8 @@ describe('Bundler', function() {
   var projectRoots;
 
   beforeEach(function() {
-    getDependencies = jest.genMockFn();
+    getDependencies = jest.fn();
-    getModuleSystemDependencies = jest.genMockFn();
+    getModuleSystemDependencies = jest.fn();
     projectRoots = ['/root'];
 
     Resolver.mockImpl(function() {
@@ -90,7 +90,7 @@ describe('Bundler', function() {
     });
 
     assetServer = {
-      getAssetData: jest.genMockFn(),
+      getAssetData: jest.fn(),
     };
 
     bundler = new Bundler({

packager/react-packager/src/JSTransformer/__tests__/Transformer-test.js

@@ -9,12 +9,12 @@
 'use strict';
 
 jest
-  .dontMock('../../lib/ModuleTransport')
+  .unmock('../../lib/ModuleTransport')
-  .dontMock('../');
+  .unmock('../');
 
-const fs = {writeFileSync: jest.genMockFn()};
+const fs = {writeFileSync: jest.fn()};
 const temp = {path: () => '/arbitrary/path'};
-const workerFarm = jest.genMockFn();
+const workerFarm = jest.fn();
 jest.setMock('fs', fs);
 jest.setMock('temp', temp);
 jest.setMock('worker-farm', workerFarm);
@@ -29,15 +29,15 @@ describe('Transformer', function() {
   const transformModulePath = __filename;
 
   beforeEach(function() {
-    Cache = jest.genMockFn();
+    Cache = jest.fn();
-    Cache.prototype.get = jest.genMockFn().mockImpl((a, b, c) => c());
+    Cache.prototype.get = jest.fn((a, b, c) => c());
 
     fs.writeFileSync.mockClear();
     options = {transformModulePath};
     workerFarm.mockClear();
     workerFarm.mockImpl((opts, path, methods) => {
       const api = workers = {};
-      methods.forEach(method => api[method] = jest.genMockFn());
+      methods.forEach(method => api[method] = jest.fn());
       return api;
     });
   });

packager/react-packager/src/JSTransformer/worker/__tests__/constant-folding-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 const babel = require('babel-core');
 const constantFolding = require('../constant-folding');
 

packager/react-packager/src/JSTransformer/worker/__tests__/extract-dependencies-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 const extractDependencies = require('../extract-dependencies');
 

packager/react-packager/src/JSTransformer/worker/__tests__/inline-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 const inline = require('../inline');
 const {transform, transformFromAst} = require('babel-core');
 

packager/react-packager/src/JSTransformer/worker/__tests__/minify-test.js

@@ -8,10 +8,10 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 const uglify = {
-  minify: jest.genMockFunction().mockImplementation(code => {
+  minify: jest.fn(code => {
     return {
       code: code.replace(/(^|\W)\s+/g, '$1'),
       map: {},

packager/react-packager/src/JSTransformer/worker/__tests__/worker-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 jest.mock('../constant-folding');
 jest.mock('../extract-dependencies');
 jest.mock('../inline');
@@ -22,7 +22,7 @@ describe('code transformation worker:', () => {
   beforeEach(() => {
     extractDependencies =
       require('../extract-dependencies').mockReturnValue({});
-    transform = jest.genMockFunction();
+    transform = jest.fn();
   });
 
   it('calls the transform with file name, source code, and transform options', function() {

packager/react-packager/src/Resolver/__tests__/Resolver-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.dontMock('../');
+jest.unmock('../');
 jest.mock('path');
 
 const Promise = require('promise');
@@ -16,7 +16,7 @@ const Resolver = require('../');
 
 const path = require('path');
 
-let DependencyGraph = jest.genMockFn();
+let DependencyGraph = jest.fn();
 jest.setMock('node-haste', DependencyGraph);
 let Module;
 let Polyfill;
@@ -24,26 +24,26 @@ let Polyfill;
 describe('Resolver', function() {
   beforeEach(function() {
     DependencyGraph.mockClear();
-    Module = jest.genMockFn().mockImpl(function() {
+    Module = jest.fn(function() {
-      this.getName = jest.genMockFn();
+      this.getName = jest.fn();
-      this.getDependencies = jest.genMockFn();
+      this.getDependencies = jest.fn();
-      this.isPolyfill = jest.genMockFn().mockReturnValue(false);
+      this.isPolyfill = jest.fn().mockReturnValue(false);
-      this.isJSON = jest.genMockFn().mockReturnValue(false);
+      this.isJSON = jest.fn().mockReturnValue(false);
     });
-    Polyfill = jest.genMockFn().mockImpl(function() {
+    Polyfill = jest.fn(function() {
       var polyfill = new Module();
       polyfill.isPolyfill.mockReturnValue(true);
       return polyfill;
     });
 
     DependencyGraph.replacePatterns = require.requireActual('node-haste/lib/lib/replacePatterns');
-    DependencyGraph.prototype.createPolyfill = jest.genMockFn();
+    DependencyGraph.prototype.createPolyfill = jest.fn();
-    DependencyGraph.prototype.getDependencies = jest.genMockFn();
+    DependencyGraph.prototype.getDependencies = jest.fn();
 
     // For the polyfillDeps
-    path.join = jest.genMockFn().mockImpl((a, b) => b);
+    path.join = jest.fn((a, b) => b);
 
-    DependencyGraph.prototype.load = jest.genMockFn().mockImpl(() => Promise.resolve());
+    DependencyGraph.prototype.load = jest.fn(() => Promise.resolve());
   });
 
   class ResolutionResponseMock {
@@ -81,9 +81,9 @@ describe('Resolver', function() {
 
   function createPolyfill(id, dependencies) {
     var polyfill = new Polyfill({});
-    polyfill.getName = jest.genMockFn().mockImpl(() => Promise.resolve(id));
+    polyfill.getName = jest.fn(() => Promise.resolve(id));
     polyfill.getDependencies =
-      jest.genMockFn().mockImpl(() => Promise.resolve(dependencies));
+      jest.fn(() => Promise.resolve(dependencies));
     return polyfill;
   }
 
@@ -415,7 +415,7 @@ describe('Resolver', function() {
       let depResolver, minifyCode, module, resolutionResponse, sourceMap;
 
       beforeEach(() => {
-        minifyCode = jest.genMockFn().mockImpl((filename, code, map) =>
+        minifyCode = jest.fn((filename, code, map) =>
           Promise.resolve({code, map}));
         depResolver = new Resolver({
           projectRoot: '/root',

packager/react-packager/src/Resolver/polyfills/__tests__/Number.es6-test.js

@@ -9,7 +9,7 @@
  * @emails oncall+jsinfra
  */
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 describe('Number (ES6)', () => {
   describe('EPSILON', () => {

packager/react-packager/src/Resolver/polyfills/__tests__/Object.es7-test.js

@@ -6,7 +6,7 @@
 
  /* eslint-disable fb-www/object-create-only-one-param */
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 describe('Object (ES7)', () => {
   beforeEach(() => {

packager/react-packager/src/Server/__tests__/Server-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 jest.setMock('worker-farm', function() { return () => {}; })
     .setMock('timers', { setImmediate: (fn) => setTimeout(fn, 0) })
@@ -54,20 +54,19 @@ describe('processRequest', () => {
     )
   );
 
-  const invalidatorFunc = jest.genMockFunction();
+  const invalidatorFunc = jest.fn();
-  const watcherFunc = jest.genMockFunction();
+  const watcherFunc = jest.fn();
   var requestHandler;
   var triggerFileChange;
 
   beforeEach(() => {
     FileWatcher = require('node-haste').FileWatcher;
-    Bundler.prototype.bundle = jest.genMockFunction().mockImpl(() =>
+    Bundler.prototype.bundle = jest.fn(() =>
       Promise.resolve({
         getSource: () => 'this is the source',
         getSourceMap: () => 'this is the source map',
         getEtag: () => 'this is an etag',
-      })
+      }));
-    );
 
     FileWatcher.prototype.on = function(eventType, callback) {
       if (eventType !== 'all') {
@@ -198,7 +197,7 @@ describe('processRequest', () => {
     });
 
     it('does not rebuild the bundles that contain a file when that file is changed', () => {
-      const bundleFunc = jest.genMockFunction();
+      const bundleFunc = jest.fn();
       bundleFunc
         .mockReturnValueOnce(
           Promise.resolve({
@@ -243,7 +242,7 @@ describe('processRequest', () => {
     });
 
     it('does not rebuild the bundles that contain a file when that file is changed, even when hot loading is enabled', () => {
-      const bundleFunc = jest.genMockFunction();
+      const bundleFunc = jest.fn();
       bundleFunc
         .mockReturnValueOnce(
           Promise.resolve({
@@ -301,8 +300,8 @@ describe('processRequest', () => {
       req = new EventEmitter();
       req.url = '/onchange';
       res = {
-        writeHead: jest.genMockFn(),
+        writeHead: jest.fn(),
-        end: jest.genMockFn()
+        end: jest.fn()
       };
     });
 
@@ -326,7 +325,7 @@ describe('processRequest', () => {
   describe('/assets endpoint', () => {
     it('should serve simple case', () => {
       const req = {url: '/assets/imgs/a.png'};
-      const res = {end: jest.genMockFn()};
+      const res = {end: jest.fn()};
 
       AssetServer.prototype.get.mockImpl(() => Promise.resolve('i am image'));
 
@@ -337,7 +336,7 @@ describe('processRequest', () => {
 
     it('should parse the platform option', () => {
       const req = {url: '/assets/imgs/a.png?platform=ios'};
-      const res = {end: jest.genMockFn()};
+      const res = {end: jest.fn()};
 
       AssetServer.prototype.get.mockImpl(() => Promise.resolve('i am image'));
 

packager/react-packager/src/lib/__tests__/declareOpts-test.js

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.disableAutomock();
 
 var declareOpts = require('../declareOpts');