diff --git a/src/addons/transitions/__tests__/ReactCSSTransitionGroup-test.js b/src/addons/transitions/__tests__/ReactCSSTransitionGroup-test.js
index e0393dc2da..b56eb237a2 100644
--- a/src/addons/transitions/__tests__/ReactCSSTransitionGroup-test.js
+++ b/src/addons/transitions/__tests__/ReactCSSTransitionGroup-test.js
@@ -23,7 +23,7 @@ describe('ReactCSSTransitionGroup', function() {
   var container;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactCSSTransitionGroup = require('ReactCSSTransitionGroup');
diff --git a/src/isomorphic/classic/__tests__/ReactContextValidator-test.js b/src/isomorphic/classic/__tests__/ReactContextValidator-test.js
index 0fa4fd5280..40a5c2fdb5 100644
--- a/src/isomorphic/classic/__tests__/ReactContextValidator-test.js
+++ b/src/isomorphic/classic/__tests__/ReactContextValidator-test.js
@@ -25,7 +25,7 @@ var reactComponentExpect;
 
 describe('ReactContextValidator', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/isomorphic/classic/class/__tests__/ReactBind-test.js b/src/isomorphic/classic/class/__tests__/ReactBind-test.js
index 4f50f0d6fb..a3d5f1cc54 100644
--- a/src/isomorphic/classic/class/__tests__/ReactBind-test.js
+++ b/src/isomorphic/classic/class/__tests__/ReactBind-test.js
@@ -11,7 +11,6 @@
 /*global global:true*/
 'use strict';
 
-var mocks = require('mocks');
 var React = require('React');
 var ReactTestUtils = require('ReactTestUtils');
 var reactComponentExpect = require('reactComponentExpect');
@@ -21,9 +20,9 @@ describe('autobinding', function() {
 
   it('Holds reference to instance', function() {
 
-    var mouseDidEnter = mocks.getMockFunction();
-    var mouseDidLeave = mocks.getMockFunction();
-    var mouseDidClick = mocks.getMockFunction();
+    var mouseDidEnter = jest.genMockFn();
+    var mouseDidLeave = jest.genMockFn();
+    var mouseDidClick = jest.genMockFn();
 
     var TestBindComponent = React.createClass({
       getInitialState: function() {
@@ -96,7 +95,7 @@ describe('autobinding', function() {
   });
 
   it('works with mixins', function() {
-    var mouseDidClick = mocks.getMockFunction();
+    var mouseDidClick = jest.genMockFn();
 
     var TestMixin = {
       onClick: mouseDidClick,
diff --git a/src/isomorphic/classic/class/__tests__/ReactBindOptout-test.js b/src/isomorphic/classic/class/__tests__/ReactBindOptout-test.js
index cb416258bc..e7c42b69f4 100644
--- a/src/isomorphic/classic/class/__tests__/ReactBindOptout-test.js
+++ b/src/isomorphic/classic/class/__tests__/ReactBindOptout-test.js
@@ -11,7 +11,6 @@
 /*global global:true*/
 'use strict';
 
-var mocks = require('mocks');
 var React = require('React');
 var ReactTestUtils = require('ReactTestUtils');
 var reactComponentExpect = require('reactComponentExpect');
@@ -21,9 +20,9 @@ describe('autobind optout', function() {
 
   it('should work with manual binding', function() {
 
-    var mouseDidEnter = mocks.getMockFunction();
-    var mouseDidLeave = mocks.getMockFunction();
-    var mouseDidClick = mocks.getMockFunction();
+    var mouseDidEnter = jest.genMockFn();
+    var mouseDidLeave = jest.genMockFn();
+    var mouseDidClick = jest.genMockFn();
 
     var TestBindComponent = React.createClass({
       autobind: false,
@@ -139,7 +138,7 @@ describe('autobind optout', function() {
   });
 
   it('works with mixins that have not opted out of autobinding', function() {
-    var mouseDidClick = mocks.getMockFunction();
+    var mouseDidClick = jest.genMockFn();
 
     var TestMixin = {
       onClick: mouseDidClick,
@@ -165,7 +164,7 @@ describe('autobind optout', function() {
   });
 
   it('works with mixins that have opted out of autobinding', function() {
-    var mouseDidClick = mocks.getMockFunction();
+    var mouseDidClick = jest.genMockFn();
 
     var TestMixin = {
       autobind: false,
diff --git a/src/isomorphic/classic/class/__tests__/ReactClass-test.js b/src/isomorphic/classic/class/__tests__/ReactClass-test.js
index f684c8a10a..6d273d72ff 100644
--- a/src/isomorphic/classic/class/__tests__/ReactClass-test.js
+++ b/src/isomorphic/classic/class/__tests__/ReactClass-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 var React;
 var ReactDOM;
 var ReactTestUtils;
@@ -46,7 +44,7 @@ describe('ReactClass-spec', function() {
   });
 
   it('should copy prop types onto the Constructor', function() {
-    var propValidator = mocks.getMockFunction();
+    var propValidator = jest.genMockFn();
     var TestComponent = React.createClass({
       propTypes: {
         value: propValidator,
@@ -63,7 +61,7 @@ describe('ReactClass-spec', function() {
 
   it('should warn on invalid prop types', function() {
     var warn = console.error;
-    console.error = mocks.getMockFunction();
+    console.error = jest.genMockFn();
     try {
 
       React.createClass({
@@ -87,7 +85,7 @@ describe('ReactClass-spec', function() {
 
   it('should warn on invalid context types', function() {
     var warn = console.error;
-    console.error = mocks.getMockFunction();
+    console.error = jest.genMockFn();
     try {
       React.createClass({
         displayName: 'Component',
@@ -110,7 +108,7 @@ describe('ReactClass-spec', function() {
 
   it('should throw on invalid child context types', function() {
     var warn = console.error;
-    console.error = mocks.getMockFunction();
+    console.error = jest.genMockFn();
     try {
       React.createClass({
         displayName: 'Component',
diff --git a/src/isomorphic/classic/class/__tests__/ReactClassMixin-test.js b/src/isomorphic/classic/class/__tests__/ReactClassMixin-test.js
index 84d434ffa9..c09d064d1d 100644
--- a/src/isomorphic/classic/class/__tests__/ReactClassMixin-test.js
+++ b/src/isomorphic/classic/class/__tests__/ReactClassMixin-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 var React;
 var ReactTestUtils;
 
@@ -27,8 +25,8 @@ describe('ReactClass-mixin', function() {
   beforeEach(function() {
     React = require('React');
     ReactTestUtils = require('ReactTestUtils');
-    mixinPropValidator = mocks.getMockFunction();
-    componentPropValidator = mocks.getMockFunction();
+    mixinPropValidator = jest.genMockFn();
+    componentPropValidator = jest.genMockFn();
 
     var MixinA = {
       propTypes: {
@@ -109,7 +107,7 @@ describe('ReactClass-mixin', function() {
   });
 
   it('should support merging propTypes and statics', function() {
-    var listener = mocks.getMockFunction();
+    var listener = jest.genMockFn();
     var instance = <TestComponent listener={listener} />;
     instance = ReactTestUtils.renderIntoDocument(instance);
 
@@ -124,7 +122,7 @@ describe('ReactClass-mixin', function() {
   });
 
   it('should support chaining delegate functions', function() {
-    var listener = mocks.getMockFunction();
+    var listener = jest.genMockFn();
     var instance = <TestComponent listener={listener} />;
     instance = ReactTestUtils.renderIntoDocument(instance);
 
@@ -137,7 +135,7 @@ describe('ReactClass-mixin', function() {
   });
 
   it('should chain functions regardless of spec property order', function() {
-    var listener = mocks.getMockFunction();
+    var listener = jest.genMockFn();
     var instance = <TestComponentWithReverseSpec listener={listener} />;
     instance = ReactTestUtils.renderIntoDocument(instance);
 
diff --git a/src/isomorphic/classic/element/__tests__/ReactElement-test.js b/src/isomorphic/classic/element/__tests__/ReactElement-test.js
index b3c8cc4129..617ceed237 100644
--- a/src/isomorphic/classic/element/__tests__/ReactElement-test.js
+++ b/src/isomorphic/classic/element/__tests__/ReactElement-test.js
@@ -23,7 +23,7 @@ describe('ReactElement', function() {
   var originalSymbol;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     // Delete the native Symbol if we have one to ensure we test the
     // unpolyfilled environment.
@@ -339,7 +339,7 @@ describe('ReactElement', function() {
       return OTHER_SYMBOL;
     };
 
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
 
@@ -372,7 +372,7 @@ describe('comparing jsx vs .createFactory() vs .createElement()', function() {
   var Child, mocks;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     mocks = require('mocks');
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/isomorphic/classic/element/__tests__/ReactElementClone-test.js b/src/isomorphic/classic/element/__tests__/ReactElementClone-test.js
index 952e5eb243..c2743b83aa 100644
--- a/src/isomorphic/classic/element/__tests__/ReactElementClone-test.js
+++ b/src/isomorphic/classic/element/__tests__/ReactElementClone-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-require('mock-modules');
-
 var React;
 var ReactDOM;
 var ReactTestUtils;
diff --git a/src/isomorphic/classic/element/__tests__/ReactElementValidator-test.js b/src/isomorphic/classic/element/__tests__/ReactElementValidator-test.js
index 6f1cce5797..ed53c7f9ee 100644
--- a/src/isomorphic/classic/element/__tests__/ReactElementValidator-test.js
+++ b/src/isomorphic/classic/element/__tests__/ReactElementValidator-test.js
@@ -22,7 +22,7 @@ describe('ReactElementValidator', function() {
   var ComponentClass;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/isomorphic/classic/types/__tests__/ReactPropTypes-test.js b/src/isomorphic/classic/types/__tests__/ReactPropTypes-test.js
index aa23672d92..9dc75a7b39 100644
--- a/src/isomorphic/classic/types/__tests__/ReactPropTypes-test.js
+++ b/src/isomorphic/classic/types/__tests__/ReactPropTypes-test.js
@@ -764,7 +764,7 @@ describe('ReactPropTypes', function() {
 
   describe('Custom validator', function() {
     beforeEach(function() {
-      require('mock-modules').dumpCache();
+      jest.resetModuleRegistry();
       spyOn(console, 'error');
     });
 
diff --git a/src/isomorphic/deprecated/__tests__/cloneWithProps-test.js b/src/isomorphic/deprecated/__tests__/cloneWithProps-test.js
index dedc4bf1b7..868b1b57ad 100644
--- a/src/isomorphic/deprecated/__tests__/cloneWithProps-test.js
+++ b/src/isomorphic/deprecated/__tests__/cloneWithProps-test.js
@@ -22,7 +22,7 @@ var emptyObject;
 describe('cloneWithProps', function() {
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactTestUtils = require('ReactTestUtils');
diff --git a/src/isomorphic/modern/element/__tests__/ReactJSXElement-test.js b/src/isomorphic/modern/element/__tests__/ReactJSXElement-test.js
index 0a87205c17..94ea88b6bc 100644
--- a/src/isomorphic/modern/element/__tests__/ReactJSXElement-test.js
+++ b/src/isomorphic/modern/element/__tests__/ReactJSXElement-test.js
@@ -19,7 +19,7 @@ describe('ReactJSXElement', function() {
   var Component;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/isomorphic/modern/element/__tests__/ReactJSXElementValidator-test.js b/src/isomorphic/modern/element/__tests__/ReactJSXElementValidator-test.js
index cc50840f8d..5471135aef 100644
--- a/src/isomorphic/modern/element/__tests__/ReactJSXElementValidator-test.js
+++ b/src/isomorphic/modern/element/__tests__/ReactJSXElementValidator-test.js
@@ -22,7 +22,7 @@ describe('ReactJSXElementValidator', function() {
   var RequiredPropComponent;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactTestUtils = require('ReactTestUtils');
diff --git a/src/renderers/dom/__tests__/ReactDOMProduction-test.js b/src/renderers/dom/__tests__/ReactDOMProduction-test.js
index 997958caf8..725a904ef6 100644
--- a/src/renderers/dom/__tests__/ReactDOMProduction-test.js
+++ b/src/renderers/dom/__tests__/ReactDOMProduction-test.js
@@ -22,7 +22,7 @@ describe('ReactDOMProduction', function() {
     oldProcess = process;
     global.process = {env: {NODE_ENV: 'production'}};
 
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
   });
diff --git a/src/renderers/dom/client/__tests__/ReactBrowserEventEmitter-test.js b/src/renderers/dom/client/__tests__/ReactBrowserEventEmitter-test.js
index 09796a81a3..7d84831a68 100644
--- a/src/renderers/dom/client/__tests__/ReactBrowserEventEmitter-test.js
+++ b/src/renderers/dom/client/__tests__/ReactBrowserEventEmitter-test.js
@@ -12,7 +12,6 @@
 'use strict';
 
 var keyOf = require('keyOf');
-var mocks = require('mocks');
 
 var ReactMount = require('ReactMount');
 var idToNode = {};
@@ -44,7 +43,7 @@ var recordIDAndReturnFalse = function(id, event) {
   recordID(id);
   return false;
 };
-var LISTENER = mocks.getMockFunction();
+var LISTENER = jest.genMockFn();
 var ON_CLICK_KEY = keyOf({onClick: null});
 var ON_TOUCH_TAP_KEY = keyOf({onTouchTap: null});
 var ON_CHANGE_KEY = keyOf({onChange: null});
@@ -76,7 +75,7 @@ function registerSimpleTestHandler() {
 
 describe('ReactBrowserEventEmitter', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     LISTENER.mockClear();
     EventPluginHub = require('EventPluginHub');
     EventPluginRegistry = require('EventPluginRegistry');
@@ -306,7 +305,7 @@ describe('ReactBrowserEventEmitter', function() {
    */
 
   it('should invoke handlers that were removed while bubbling', function() {
-    var handleParentClick = mocks.getMockFunction();
+    var handleParentClick = jest.genMockFn();
     var handleChildClick = function(event) {
       EventPluginHub.deleteAllListeners(getID(PARENT));
     };
@@ -325,7 +324,7 @@ describe('ReactBrowserEventEmitter', function() {
   });
 
   it('should not invoke newly inserted handlers while bubbling', function() {
-    var handleParentClick = mocks.getMockFunction();
+    var handleParentClick = jest.genMockFn();
     var handleChildClick = function(event) {
       EventPluginHub.putListener(
         getID(PARENT),
diff --git a/src/renderers/dom/client/__tests__/ReactEventIndependence-test.js b/src/renderers/dom/client/__tests__/ReactEventIndependence-test.js
index 621118cfd4..07086b0563 100644
--- a/src/renderers/dom/client/__tests__/ReactEventIndependence-test.js
+++ b/src/renderers/dom/client/__tests__/ReactEventIndependence-test.js
@@ -17,7 +17,7 @@ var ReactTestUtils;
 
 describe('ReactEventIndependence', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/renderers/dom/client/__tests__/ReactEventListener-test.js b/src/renderers/dom/client/__tests__/ReactEventListener-test.js
index cfb6bb28f5..42e5dbc552 100644
--- a/src/renderers/dom/client/__tests__/ReactEventListener-test.js
+++ b/src/renderers/dom/client/__tests__/ReactEventListener-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 
 var EVENT_TARGET_PARAM = 1;
 
@@ -27,7 +25,7 @@ describe('ReactEventListener', function() {
   var handleTopLevel;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
 
     ReactDOM = require('ReactDOM');
@@ -36,7 +34,7 @@ describe('ReactEventListener', function() {
     ReactEventListener = require('ReactEventListener');
     ReactTestUtils = require('ReactTestUtils');
 
-    handleTopLevel = mocks.getMockFunction();
+    handleTopLevel = jest.genMockFn();
     ReactEventListener._handleTopLevel = handleTopLevel;
   });
 
diff --git a/src/renderers/dom/client/__tests__/ReactMount-test.js b/src/renderers/dom/client/__tests__/ReactMount-test.js
index 41826b8b35..6328a06092 100644
--- a/src/renderers/dom/client/__tests__/ReactMount-test.js
+++ b/src/renderers/dom/client/__tests__/ReactMount-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 describe('ReactMount', function() {
   var React = require('React');
   var ReactDOM = require('ReactDOM');
@@ -81,8 +79,8 @@ describe('ReactMount', function() {
   it('should unmount and remount if the key changes', function() {
     var container = document.createElement('container');
 
-    var mockMount = mocks.getMockFunction();
-    var mockUnmount = mocks.getMockFunction();
+    var mockMount = jest.genMockFn();
+    var mockUnmount = jest.genMockFn();
 
     var Component = React.createClass({
       componentDidMount: mockMount,
@@ -199,9 +197,9 @@ describe('ReactMount', function() {
   }
 
   it('warns when using two copies of React before throwing', function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     var RD1 = require('ReactDOM');
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     var RD2 = require('ReactDOM');
 
     var X = React.createClass({
diff --git a/src/renderers/dom/client/__tests__/ReactRenderDocument-test.js b/src/renderers/dom/client/__tests__/ReactRenderDocument-test.js
index 31ffad5d90..2c9d642724 100644
--- a/src/renderers/dom/client/__tests__/ReactRenderDocument-test.js
+++ b/src/renderers/dom/client/__tests__/ReactRenderDocument-test.js
@@ -11,7 +11,7 @@
 
 'use strict';
 
-require('mock-modules')
+jest
   .mock('ServerReactRootIndex');
 
 var React;
@@ -33,7 +33,7 @@ var UNMOUNT_INVARIANT_MESSAGE =
 
 describe('rendering React components at document', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     // Negative integer creator. So they won't get confused with
     // the Client positive ids.
diff --git a/src/renderers/dom/client/__tests__/validateDOMNesting-test.js b/src/renderers/dom/client/__tests__/validateDOMNesting-test.js
index a7878289cb..7f671c61f8 100644
--- a/src/renderers/dom/client/__tests__/validateDOMNesting-test.js
+++ b/src/renderers/dom/client/__tests__/validateDOMNesting-test.js
@@ -47,7 +47,7 @@ function isTagStackValid(stack) {
 
 describe('ReactContextValidator', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     validateDOMNesting = require('validateDOMNesting');
   });
diff --git a/src/renderers/dom/client/eventPlugins/__tests__/EnterLeaveEventPlugin-test.js b/src/renderers/dom/client/eventPlugins/__tests__/EnterLeaveEventPlugin-test.js
index 4040b3beb2..5d3afd3ee8 100644
--- a/src/renderers/dom/client/eventPlugins/__tests__/EnterLeaveEventPlugin-test.js
+++ b/src/renderers/dom/client/eventPlugins/__tests__/EnterLeaveEventPlugin-test.js
@@ -21,7 +21,7 @@ var topLevelTypes;
 
 describe('EnterLeaveEventPlugin', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     EnterLeaveEventPlugin = require('EnterLeaveEventPlugin');
     EventConstants = require('EventConstants');
diff --git a/src/renderers/dom/client/eventPlugins/__tests__/SelectEventPlugin-test.js b/src/renderers/dom/client/eventPlugins/__tests__/SelectEventPlugin-test.js
index 8a536c13fb..e9b8be7347 100644
--- a/src/renderers/dom/client/eventPlugins/__tests__/SelectEventPlugin-test.js
+++ b/src/renderers/dom/client/eventPlugins/__tests__/SelectEventPlugin-test.js
@@ -61,15 +61,13 @@ describe('SelectEventPlugin', function() {
   });
 
   it('should extract if an `onSelect` listener is present', function() {
-    var mocks = require('mocks');
-
     var WithSelect = React.createClass({
       render: function() {
         return <input type="text" onSelect={this.props.onSelect} />;
       },
     });
 
-    var cb = mocks.getMockFunction();
+    var cb = jest.genMockFn();
 
     var rendered = ReactTestUtils.renderIntoDocument(
       <WithSelect onSelect={cb} />
diff --git a/src/renderers/dom/client/wrappers/__tests__/ReactDOMButton-test.js b/src/renderers/dom/client/wrappers/__tests__/ReactDOMButton-test.js
index f536d93c70..9ca6b1ebfb 100644
--- a/src/renderers/dom/client/wrappers/__tests__/ReactDOMButton-test.js
+++ b/src/renderers/dom/client/wrappers/__tests__/ReactDOMButton-test.js
@@ -12,14 +12,12 @@
 'use strict';
 
 
-var mocks = require('mocks');
-
 describe('ReactDOMButton', function() {
   var React;
   var ReactDOM;
   var ReactTestUtils;
 
-  var onClick = mocks.getMockFunction();
+  var onClick = jest.genMockFn();
 
   function expectClickThru(button) {
     onClick.mockClear();
diff --git a/src/renderers/dom/client/wrappers/__tests__/ReactDOMInput-test.js b/src/renderers/dom/client/wrappers/__tests__/ReactDOMInput-test.js
index da680b92af..ffa90a059d 100644
--- a/src/renderers/dom/client/wrappers/__tests__/ReactDOMInput-test.js
+++ b/src/renderers/dom/client/wrappers/__tests__/ReactDOMInput-test.js
@@ -13,7 +13,6 @@
 
 
 var emptyFunction = require('emptyFunction');
-var mocks = require('mocks');
 
 describe('ReactDOMInput', function() {
   var EventConstants;
@@ -23,7 +22,7 @@ describe('ReactDOMInput', function() {
   var ReactTestUtils;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     EventConstants = require('EventConstants');
     React = require('React');
     ReactDOM = require('ReactDOM');
@@ -235,7 +234,7 @@ describe('ReactDOMInput', function() {
   });
 
   it('should support ReactLink', function() {
-    var link = new ReactLink('yolo', mocks.getMockFunction());
+    var link = new ReactLink('yolo', jest.genMockFn());
     var instance = <input type="text" valueLink={link} />;
 
     instance = ReactTestUtils.renderIntoDocument(instance);
@@ -252,7 +251,7 @@ describe('ReactDOMInput', function() {
   });
 
   it('should warn with value and no onChange handler', function() {
-    var link = new ReactLink('yolo', mocks.getMockFunction());
+    var link = new ReactLink('yolo', jest.genMockFn());
     ReactTestUtils.renderIntoDocument(<input type="text" valueLink={link} />);
     expect(console.error.argsForCall.length).toBe(1);
     expect(console.error.argsForCall[0][0]).toContain(
@@ -260,7 +259,7 @@ describe('ReactDOMInput', function() {
     );
 
     ReactTestUtils.renderIntoDocument(
-      <input type="text" value="zoink" onChange={mocks.getMockFunction()} />
+      <input type="text" value="zoink" onChange={jest.genMockFn()} />
     );
     expect(console.error.argsForCall.length).toBe(1);
     ReactTestUtils.renderIntoDocument(<input type="text" value="zoink" />);
@@ -292,7 +291,7 @@ describe('ReactDOMInput', function() {
 
   it('should throw if both value and valueLink are provided', function() {
     var node = document.createElement('div');
-    var link = new ReactLink('yolo', mocks.getMockFunction());
+    var link = new ReactLink('yolo', jest.genMockFn());
     var instance = <input type="text" valueLink={link} />;
 
     expect(() => ReactDOM.render(instance, node)).not.toThrow();
@@ -312,7 +311,7 @@ describe('ReactDOMInput', function() {
   });
 
   it('should support checkedLink', function() {
-    var link = new ReactLink(true, mocks.getMockFunction());
+    var link = new ReactLink(true, jest.genMockFn());
     var instance = <input type="checkbox" checkedLink={link} />;
 
     instance = ReactTestUtils.renderIntoDocument(instance);
@@ -330,7 +329,7 @@ describe('ReactDOMInput', function() {
 
   it('should warn with checked and no onChange handler', function() {
     var node = document.createElement('div');
-    var link = new ReactLink(true, mocks.getMockFunction());
+    var link = new ReactLink(true, jest.genMockFn());
     ReactDOM.render(<input type="checkbox" checkedLink={link} />, node);
     expect(console.error.argsForCall.length).toBe(1);
     expect(console.error.argsForCall[0][0]).toContain(
@@ -341,7 +340,7 @@ describe('ReactDOMInput', function() {
       <input
         type="checkbox"
         checked="false"
-        onChange={mocks.getMockFunction()}
+        onChange={jest.genMockFn()}
       />
     );
     expect(console.error.argsForCall.length).toBe(1);
@@ -369,7 +368,7 @@ describe('ReactDOMInput', function() {
 
   it('should throw if both checked and checkedLink are provided', function() {
     var node = document.createElement('div');
-    var link = new ReactLink(true, mocks.getMockFunction());
+    var link = new ReactLink(true, jest.genMockFn());
     var instance = <input type="checkbox" checkedLink={link} />;
 
     expect(() => ReactDOM.render(instance, node)).not.toThrow();
@@ -391,7 +390,7 @@ describe('ReactDOMInput', function() {
 
   it('should throw if both checkedLink and valueLink are provided', function() {
     var node = document.createElement('div');
-    var link = new ReactLink(true, mocks.getMockFunction());
+    var link = new ReactLink(true, jest.genMockFn());
     var instance = <input type="checkbox" checkedLink={link} />;
 
     expect(() => ReactDOM.render(instance, node)).not.toThrow();
diff --git a/src/renderers/dom/client/wrappers/__tests__/ReactDOMSelect-test.js b/src/renderers/dom/client/wrappers/__tests__/ReactDOMSelect-test.js
index ac7f67819a..56ee48e11a 100644
--- a/src/renderers/dom/client/wrappers/__tests__/ReactDOMSelect-test.js
+++ b/src/renderers/dom/client/wrappers/__tests__/ReactDOMSelect-test.js
@@ -12,8 +12,6 @@
 'use strict';
 
 
-var mocks = require('mocks');
-
 describe('ReactDOMSelect', function() {
   var React;
   var ReactDOM;
@@ -350,7 +348,7 @@ describe('ReactDOMSelect', function() {
   });
 
   it('should support ReactLink', function() {
-    var link = new ReactLink('giraffe', mocks.getMockFunction());
+    var link = new ReactLink('giraffe', jest.genMockFn());
     var stub =
       <select valueLink={link}>
         <option value="monkey">A monkey!</option>
diff --git a/src/renderers/dom/client/wrappers/__tests__/ReactDOMTextarea-test.js b/src/renderers/dom/client/wrappers/__tests__/ReactDOMTextarea-test.js
index 948b1b6790..1512d25eaa 100644
--- a/src/renderers/dom/client/wrappers/__tests__/ReactDOMTextarea-test.js
+++ b/src/renderers/dom/client/wrappers/__tests__/ReactDOMTextarea-test.js
@@ -12,7 +12,6 @@
 'use strict';
 
 var emptyFunction = require('emptyFunction');
-var mocks = require('mocks');
 
 describe('ReactDOMTextarea', function() {
   var React;
@@ -238,7 +237,7 @@ describe('ReactDOMTextarea', function() {
   });
 
   it('should support ReactLink', function() {
-    var link = new ReactLink('yolo', mocks.getMockFunction());
+    var link = new ReactLink('yolo', jest.genMockFn());
     var instance = <textarea valueLink={link} />;
 
     spyOn(console, 'error');
diff --git a/src/renderers/dom/server/__tests__/ReactServerRendering-test.js b/src/renderers/dom/server/__tests__/ReactServerRendering-test.js
index d5e2a68aba..83c54a8741 100644
--- a/src/renderers/dom/server/__tests__/ReactServerRendering-test.js
+++ b/src/renderers/dom/server/__tests__/ReactServerRendering-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 var ExecutionEnvironment;
 var React;
 var ReactDOM;
@@ -25,7 +23,7 @@ var ID_ATTRIBUTE_NAME;
 
 describe('ReactServerRendering', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactMarkupChecksum = require('ReactMarkupChecksum');
@@ -74,7 +72,7 @@ describe('ReactServerRendering', function() {
 
     it('should not register event listeners', function() {
       var EventPluginHub = require('EventPluginHub');
-      var cb = mocks.getMockFunction();
+      var cb = jest.genMockFn();
 
       ReactServerRendering.renderToString(
         <span onClick={cb}>hello world</span>
@@ -288,7 +286,7 @@ describe('ReactServerRendering', function() {
 
     it('should not register event listeners', function() {
       var EventPluginHub = require('EventPluginHub');
-      var cb = mocks.getMockFunction();
+      var cb = jest.genMockFn();
 
       ReactServerRendering.renderToString(
         <span onClick={cb}>hello world</span>
diff --git a/src/renderers/dom/shared/__tests__/CSSProperty-test.js b/src/renderers/dom/shared/__tests__/CSSProperty-test.js
index 2861d1c341..3cec918d5c 100644
--- a/src/renderers/dom/shared/__tests__/CSSProperty-test.js
+++ b/src/renderers/dom/shared/__tests__/CSSProperty-test.js
@@ -15,7 +15,7 @@ describe('CSSProperty', function() {
   var CSSProperty;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     CSSProperty = require('CSSProperty');
   });
 
diff --git a/src/renderers/dom/shared/__tests__/CSSPropertyOperations-test.js b/src/renderers/dom/shared/__tests__/CSSPropertyOperations-test.js
index fcc67f2c43..8987d19b37 100644
--- a/src/renderers/dom/shared/__tests__/CSSPropertyOperations-test.js
+++ b/src/renderers/dom/shared/__tests__/CSSPropertyOperations-test.js
@@ -19,7 +19,7 @@ describe('CSSPropertyOperations', function() {
   var CSSPropertyOperations;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     CSSPropertyOperations = require('CSSPropertyOperations');
   });
 
diff --git a/src/renderers/dom/shared/__tests__/DOMPropertyOperations-test.js b/src/renderers/dom/shared/__tests__/DOMPropertyOperations-test.js
index c4b96b4cc6..5242273b37 100644
--- a/src/renderers/dom/shared/__tests__/DOMPropertyOperations-test.js
+++ b/src/renderers/dom/shared/__tests__/DOMPropertyOperations-test.js
@@ -18,7 +18,7 @@ describe('DOMPropertyOperations', function() {
   var mocks;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     var ReactDefaultInjection = require('ReactDefaultInjection');
     ReactDefaultInjection.inject();
 
@@ -270,7 +270,7 @@ describe('DOMPropertyOperations', function() {
     });
 
     it('should use mutation method where applicable', function() {
-      var foobarSetter = mocks.getMockFunction();
+      var foobarSetter = jest.genMockFn();
       // inject foobar DOM property
       DOMProperty.injection.injectDOMPropertyConfig({
         Properties: {foobar: null},
diff --git a/src/renderers/dom/shared/__tests__/Danger-test.js b/src/renderers/dom/shared/__tests__/Danger-test.js
index 6f0e886d9e..154fe94571 100644
--- a/src/renderers/dom/shared/__tests__/Danger-test.js
+++ b/src/renderers/dom/shared/__tests__/Danger-test.js
@@ -17,7 +17,7 @@ describe('Danger', function() {
     var Danger;
 
     beforeEach(function() {
-      require('mock-modules').dumpCache();
+      jest.resetModuleRegistry();
       Danger = require('Danger');
     });
 
diff --git a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
index ce787d8fe7..a477d5e42d 100644
--- a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
+++ b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
@@ -12,7 +12,6 @@
 'use strict';
 
 var assign = require('Object.assign');
-var mocks = require('mocks');
 
 describe('ReactDOMComponent', function() {
   var React;
@@ -21,7 +20,7 @@ describe('ReactDOMComponent', function() {
   var ReactDOMServer;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactDOMServer = require('ReactDOMServer');
@@ -404,7 +403,7 @@ describe('ReactDOMComponent', function() {
 
       var node = container.firstChild;
       var nodeValue = ''; // node.value always returns undefined
-      var nodeValueSetter = mocks.getMockFunction();
+      var nodeValueSetter = jest.genMockFn();
       Object.defineProperty(node, 'value', {
         get: function() {
           return nodeValue;
@@ -431,7 +430,7 @@ describe('ReactDOMComponent', function() {
       var container = document.createElement('div');
       var node = ReactDOM.render(<div />, container);
 
-      var setter = mocks.getMockFunction();
+      var setter = jest.genMockFn();
       node.setAttribute = setter;
 
       ReactDOM.render(<div dir={null} />, container);
@@ -659,8 +658,8 @@ describe('ReactDOMComponent', function() {
     it('should execute custom event plugin listening behavior', function() {
       var SimpleEventPlugin = require('SimpleEventPlugin');
 
-      SimpleEventPlugin.didPutListener = mocks.getMockFunction();
-      SimpleEventPlugin.willDeleteListener = mocks.getMockFunction();
+      SimpleEventPlugin.didPutListener = jest.genMockFn();
+      SimpleEventPlugin.willDeleteListener = jest.genMockFn();
 
       var container = document.createElement('div');
       ReactDOM.render(
@@ -678,8 +677,8 @@ describe('ReactDOMComponent', function() {
     it('should handle null and missing properly with event hooks', function() {
       var SimpleEventPlugin = require('SimpleEventPlugin');
 
-      SimpleEventPlugin.didPutListener = mocks.getMockFunction();
-      SimpleEventPlugin.willDeleteListener = mocks.getMockFunction();
+      SimpleEventPlugin.didPutListener = jest.genMockFn();
+      SimpleEventPlugin.willDeleteListener = jest.genMockFn();
       var container = document.createElement('div');
 
       ReactDOM.render(<div onClick={false} />, container);
@@ -858,8 +857,7 @@ describe('ReactDOMComponent', function() {
     it('should warn about the `onScroll` issue when unsupported (IE8)', () => {
       // Mock this here so we can mimic IE8 support. We require isEventSupported
       // before React so it's pre-mocked before React qould require it.
-      require('mock-modules')
-        .dumpCache()
+      jest.resetModuleRegistry()
         .mock('isEventSupported');
       var isEventSupported = require('isEventSupported');
       isEventSupported.mockReturnValueOnce(false);
diff --git a/src/renderers/shared/event/__tests__/EventPluginHub-test.js b/src/renderers/shared/event/__tests__/EventPluginHub-test.js
index 9d72b55ab9..d85e8b109f 100644
--- a/src/renderers/shared/event/__tests__/EventPluginHub-test.js
+++ b/src/renderers/shared/event/__tests__/EventPluginHub-test.js
@@ -11,7 +11,7 @@
 
 'use strict';
 
-require('mock-modules')
+jest
   .dontMock('EventPluginHub')
   .mock('isEventSupported');
 
@@ -20,7 +20,7 @@ describe('EventPluginHub', function() {
   var isEventSupported;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     EventPluginHub = require('EventPluginHub');
     isEventSupported = require('isEventSupported');
     isEventSupported.mockReturnValueOnce(false);
diff --git a/src/renderers/shared/event/eventPlugins/__tests__/ResponderEventPlugin-test.js b/src/renderers/shared/event/eventPlugins/__tests__/ResponderEventPlugin-test.js
index 6974cd7c41..21c719aabe 100644
--- a/src/renderers/shared/event/eventPlugins/__tests__/ResponderEventPlugin-test.js
+++ b/src/renderers/shared/event/eventPlugins/__tests__/ResponderEventPlugin-test.js
@@ -330,7 +330,7 @@ var siblings = {
 
 describe('ResponderEventPlugin', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     EventConstants = require('EventConstants');
     EventPluginHub = require('EventPluginHub');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactComponent-test.js b/src/renderers/shared/reconciler/__tests__/ReactComponent-test.js
index 0ca8ed8ebb..1244d4e762 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactComponent-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactComponent-test.js
@@ -258,7 +258,7 @@ describe('ReactComponent', function() {
   });
 
   it('fires the callback after a component is rendered', function() {
-    var callback = mocks.getMockFunction();
+    var callback = jest.genMockFn();
     var container = document.createElement('div');
     ReactDOM.render(<div />, container, callback);
     expect(callback.mock.calls.length).toBe(1);
diff --git a/src/renderers/shared/reconciler/__tests__/ReactComponentLifeCycle-test.js b/src/renderers/shared/reconciler/__tests__/ReactComponentLifeCycle-test.js
index b3a71737d4..556671d6f9 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactComponentLifeCycle-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactComponentLifeCycle-test.js
@@ -98,7 +98,7 @@ function getLifeCycleState(instance) {
  */
 describe('ReactComponentLifeCycle', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactTestUtils = require('ReactTestUtils');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponent-test.js b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponent-test.js
index c774ea1b19..298c5a1be2 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponent-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponent-test.js
@@ -27,7 +27,7 @@ var reactComponentExpect;
 describe('ReactCompositeComponent', function() {
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     reactComponentExpect = require('reactComponentExpect');
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentNestedState-test.js b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentNestedState-test.js
index 4c87a151cb..8b653953d4 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentNestedState-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentNestedState-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 var React;
 var ReactDOM;
 var ReactTestUtils;
@@ -92,7 +90,7 @@ describe('ReactCompositeComponentNestedState-state', function() {
     var container = document.createElement('div');
     document.body.appendChild(container);
 
-    var logger = mocks.getMockFunction();
+    var logger = jest.genMockFn();
 
     void ReactDOM.render(
       <ParentComponent logger={logger} />,
diff --git a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentState-test.js b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentState-test.js
index 699a3a07ba..717c469c7d 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentState-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactCompositeComponentState-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 var React;
 var ReactDOM;
 
@@ -132,7 +130,7 @@ describe('ReactCompositeComponent-state', function() {
     var container = document.createElement('div');
     document.body.appendChild(container);
 
-    var stateListener = mocks.getMockFunction();
+    var stateListener = jest.genMockFn();
     var instance = ReactDOM.render(
       <TestComponent stateListener={stateListener} />,
       container,
diff --git a/src/renderers/shared/reconciler/__tests__/ReactEmptyComponent-test.js b/src/renderers/shared/reconciler/__tests__/ReactEmptyComponent-test.js
index 8f5102dcf6..c19863f65c 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactEmptyComponent-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactEmptyComponent-test.js
@@ -20,7 +20,7 @@ var reactComponentExpect;
 
 describe('ReactEmptyComponent', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactIdentity-test.js b/src/renderers/shared/reconciler/__tests__/ReactIdentity-test.js
index 4cabcd9c01..f0b6b5bd9f 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactIdentity-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactIdentity-test.js
@@ -20,7 +20,7 @@ var ReactMount;
 describe('ReactIdentity', function() {
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
     ReactFragment = require('ReactFragment');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactMultiChild-test.js b/src/renderers/shared/reconciler/__tests__/ReactMultiChild-test.js
index 9358e14513..fbe46a69f2 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactMultiChild-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactMultiChild-test.js
@@ -11,15 +11,13 @@
 
 'use strict';
 
-var mocks = require('mocks');
-
 describe('ReactMultiChild', function() {
   var React;
 
   var ReactDOM;
 
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
   });
@@ -28,9 +26,9 @@ describe('ReactMultiChild', function() {
     it('should update children when possible', function() {
       var container = document.createElement('div');
 
-      var mockMount = mocks.getMockFunction();
-      var mockUpdate = mocks.getMockFunction();
-      var mockUnmount = mocks.getMockFunction();
+      var mockMount = jest.genMockFn();
+      var mockUpdate = jest.genMockFn();
+      var mockUnmount = jest.genMockFn();
 
       var MockComponent = React.createClass({
         componentDidMount: mockMount,
@@ -61,8 +59,8 @@ describe('ReactMultiChild', function() {
     it('should replace children with different constructors', function() {
       var container = document.createElement('div');
 
-      var mockMount = mocks.getMockFunction();
-      var mockUnmount = mocks.getMockFunction();
+      var mockMount = jest.genMockFn();
+      var mockUnmount = jest.genMockFn();
 
       var MockComponent = React.createClass({
         componentDidMount: mockMount,
@@ -89,8 +87,8 @@ describe('ReactMultiChild', function() {
     it('should NOT replace children with different owners', function() {
       var container = document.createElement('div');
 
-      var mockMount = mocks.getMockFunction();
-      var mockUnmount = mocks.getMockFunction();
+      var mockMount = jest.genMockFn();
+      var mockUnmount = jest.genMockFn();
 
       var MockComponent = React.createClass({
         componentDidMount: mockMount,
@@ -126,8 +124,8 @@ describe('ReactMultiChild', function() {
     it('should replace children with different keys', function() {
       var container = document.createElement('div');
 
-      var mockMount = mocks.getMockFunction();
-      var mockUnmount = mocks.getMockFunction();
+      var mockMount = jest.genMockFn();
+      var mockUnmount = jest.genMockFn();
 
       var MockComponent = React.createClass({
         componentDidMount: mockMount,
diff --git a/src/renderers/shared/reconciler/__tests__/ReactMultiChildReconcile-test.js b/src/renderers/shared/reconciler/__tests__/ReactMultiChildReconcile-test.js
index b3490e56ef..778aeda9aa 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactMultiChildReconcile-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactMultiChildReconcile-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-require('mock-modules');
-
 var React = require('React');
 var ReactDOM = require('ReactDOM');
 var ReactInstanceMap = require('ReactInstanceMap');
@@ -237,7 +235,7 @@ function testPropsSequence(sequence) {
 
 describe('ReactMultiChildReconcile', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
   });
 
   it('should reset internal state if removed then readded', function() {
diff --git a/src/renderers/shared/reconciler/__tests__/ReactMultiChildText-test.js b/src/renderers/shared/reconciler/__tests__/ReactMultiChildText-test.js
index dd920b2c36..aefd9c0834 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactMultiChildText-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactMultiChildText-test.js
@@ -11,8 +11,6 @@
 
 'use strict';
 
-require('mock-modules');
-
 var React = require('React');
 var ReactDOM = require('ReactDOM');
 var ReactTestUtils = require('ReactTestUtils');
diff --git a/src/renderers/shared/reconciler/__tests__/ReactStateSetters-test.js b/src/renderers/shared/reconciler/__tests__/ReactStateSetters-test.js
index 0f75e07693..c02fdebd8b 100644
--- a/src/renderers/shared/reconciler/__tests__/ReactStateSetters-test.js
+++ b/src/renderers/shared/reconciler/__tests__/ReactStateSetters-test.js
@@ -20,7 +20,7 @@ var TestComponentWithMixin;
 
 describe('ReactStateSetters', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     TestComponent = React.createClass({
       getInitialState: function() {
diff --git a/src/renderers/shared/reconciler/__tests__/refs-destruction-test.js b/src/renderers/shared/reconciler/__tests__/refs-destruction-test.js
index ae5ba514ce..e1a5644d55 100644
--- a/src/renderers/shared/reconciler/__tests__/refs-destruction-test.js
+++ b/src/renderers/shared/reconciler/__tests__/refs-destruction-test.js
@@ -19,7 +19,7 @@ var TestComponent;
 
 describe('refs-destruction', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
 
     React = require('React');
     ReactDOM = require('ReactDOM');
diff --git a/src/renderers/shared/reconciler/__tests__/refs-test.js b/src/renderers/shared/reconciler/__tests__/refs-test.js
index aed578d3bb..4b8cfbb7d9 100644
--- a/src/renderers/shared/reconciler/__tests__/refs-test.js
+++ b/src/renderers/shared/reconciler/__tests__/refs-test.js
@@ -115,7 +115,7 @@ var expectClickLogsLengthToBe = function(instance, length) {
 
 describe('reactiverefs', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
   });
 
   /**
@@ -158,7 +158,7 @@ describe('reactiverefs', function() {
  */
 describe('ref swapping', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
   });
 
   var RefHopsAround = React.createClass({
diff --git a/src/shared/utils/__tests__/OrderedMap-test.js b/src/shared/utils/__tests__/OrderedMap-test.js
index 676be1cb0a..2dab072313 100644
--- a/src/shared/utils/__tests__/OrderedMap-test.js
+++ b/src/shared/utils/__tests__/OrderedMap-test.js
@@ -134,7 +134,7 @@ var extractUniqueID = function(entity) {
 
 describe('OrderedMap', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     OrderedMap = require('OrderedMap');
   });
 
diff --git a/src/shared/utils/__tests__/Transaction-test.js b/src/shared/utils/__tests__/Transaction-test.js
index 5251d30b56..a0d6137bbe 100644
--- a/src/shared/utils/__tests__/Transaction-test.js
+++ b/src/shared/utils/__tests__/Transaction-test.js
@@ -18,7 +18,7 @@ var Transaction;
 var INIT_ERRORED = 'initErrored';     // Just a dummy value to check for.
 describe('Transaction', function() {
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     Transaction = require('Transaction');
   });
 
diff --git a/src/shared/utils/__tests__/accumulateInto-test.js b/src/shared/utils/__tests__/accumulateInto-test.js
index 68883c31a0..3790f32d97 100644
--- a/src/shared/utils/__tests__/accumulateInto-test.js
+++ b/src/shared/utils/__tests__/accumulateInto-test.js
@@ -11,7 +11,7 @@
 
 'use strict';
 
-require('mock-modules')
+jest
   .dontMock('accumulateInto');
 
 var accumulateInto;
diff --git a/src/shared/utils/__tests__/traverseAllChildren-test.js b/src/shared/utils/__tests__/traverseAllChildren-test.js
index b67ea90a71..20efb0fdc0 100644
--- a/src/shared/utils/__tests__/traverseAllChildren-test.js
+++ b/src/shared/utils/__tests__/traverseAllChildren-test.js
@@ -16,7 +16,7 @@ describe('traverseAllChildren', function() {
   var React;
   var ReactFragment;
   beforeEach(function() {
-    require('mock-modules').dumpCache();
+    jest.resetModuleRegistry();
     traverseAllChildren = require('traverseAllChildren');
     React = require('React');
     ReactFragment = require('ReactFragment');
diff --git a/src/test/__tests__/ReactDefaultPerf-test.js b/src/test/__tests__/ReactDefaultPerf-test.js
index 9602594b51..9eb3867a9e 100644
--- a/src/test/__tests__/ReactDefaultPerf-test.js
+++ b/src/test/__tests__/ReactDefaultPerf-test.js
@@ -24,7 +24,7 @@ describe('ReactDefaultPerf', function() {
 
   beforeEach(function() {
     var now = 0;
-    require('mock-modules').setMock('performanceNow', function() {
+    jest.setMock('performanceNow', function() {
       return now++;
     });
 
diff --git a/src/test/__tests__/ReactTestUtils-test.js b/src/test/__tests__/ReactTestUtils-test.js
index 9bbbdb5608..ce84a23dda 100644
--- a/src/test/__tests__/ReactTestUtils-test.js
+++ b/src/test/__tests__/ReactTestUtils-test.js
@@ -75,7 +75,7 @@ describe('ReactTestUtils', function() {
   });
 
   it('should have shallow unmounting', function() {
-    var componentWillUnmount = mocks.getMockFunction();
+    var componentWillUnmount = jest.genMockFn();
 
     var SomeComponent = React.createClass({
       render: function() {