diff --git a/src/classic/element/__tests__/ReactElementValidator-test.js b/src/classic/element/__tests__/ReactElementValidator-test.js
index 2794997c05..9555335c48 100644
--- a/src/classic/element/__tests__/ReactElementValidator-test.js
+++ b/src/classic/element/__tests__/ReactElementValidator-test.js
@@ -40,7 +40,7 @@ describe('ReactElementValidator', function() {
     spyOn(console, 'warn');
     var Component = React.createFactory(ComponentClass);
 
-    Component(null, [ Component(), Component() ]);
+    Component(null, [Component(), Component()]);
 
     expect(console.warn.argsForCall.length).toBe(1);
     expect(console.warn.argsForCall[0][0]).toContain(
@@ -64,7 +64,7 @@ describe('ReactElementValidator', function() {
     var ComponentWrapper = React.createClass({
       displayName: 'ComponentWrapper',
       render: function() {
-        return InnerComponent({childSet: [ Component(), Component() ] });
+        return InnerComponent({childSet: [Component(), Component()] });
       }
     });
 
@@ -108,7 +108,7 @@ describe('ReactElementValidator', function() {
     spyOn(console, 'warn');
     var Component = React.createFactory(ComponentClass);
 
-    Component(null, [ Component({key: '#1'}), Component({key: '#2'}) ]);
+    Component(null, [Component({key: '#1'}), Component({key: '#2'})]);
 
     expect(console.warn.argsForCall.length).toBe(0);
   });
diff --git a/src/core/__tests__/ReactComponentLifeCycle-test.js b/src/core/__tests__/ReactComponentLifeCycle-test.js
index 9f8f14a585..e522e8b69b 100644
--- a/src/core/__tests__/ReactComponentLifeCycle-test.js
+++ b/src/core/__tests__/ReactComponentLifeCycle-test.js
@@ -291,10 +291,10 @@ describe('ReactComponentLifeCycle', function() {
     spyOn(console, 'warn');
     var Component = React.createClass({
       getInitialState: function() {
-        return { isMounted: false };
+        return {isMounted: false};
       },
       componentDidMount: function() {
-        this.setState({ isMounted: true });
+        this.setState({isMounted: true});
       },
       render: function() {
         if (this.state.isMounted) {
diff --git a/src/core/__tests__/ReactCompositeComponentNestedState-test.js b/src/core/__tests__/ReactCompositeComponentNestedState-test.js
index f17cd4cb88..eb1524faab 100644
--- a/src/core/__tests__/ReactCompositeComponentNestedState-test.js
+++ b/src/core/__tests__/ReactCompositeComponentNestedState-test.js
@@ -99,17 +99,17 @@ describe('ReactCompositeComponentNestedState-state', function() {
     );
 
     expect(logger.mock.calls).toEqual([
-      [ 'parent-render', 'blue' ],
-      [ 'getInitialState', 'blue' ],
-      [ 'render', 'dark blue', 'blue' ],
-      [ 'handleHue', 'dark blue', 'blue' ],
-      [ 'parent-handleColor', 'blue' ],
-      [ 'parent-render', 'green' ],
-      [ 'setState-this', 'dark blue', 'blue' ],
-      [ 'setState-args', 'dark blue', 'green' ],
-      [ 'render', 'light green', 'green' ],
-      [ 'parent-after-setState', 'green' ],
-      [ 'after-setState', 'light green', 'green' ]
+      ['parent-render', 'blue'],
+      ['getInitialState', 'blue'],
+      ['render', 'dark blue', 'blue'],
+      ['handleHue', 'dark blue', 'blue'],
+      ['parent-handleColor', 'blue'],
+      ['parent-render', 'green'],
+      ['setState-this', 'dark blue', 'blue'],
+      ['setState-args', 'dark blue', 'green'],
+      ['render', 'light green', 'green'],
+      ['parent-after-setState', 'green'],
+      ['after-setState', 'light green', 'green']
     ]);
   });
 });
diff --git a/src/core/__tests__/ReactCompositeComponentState-test.js b/src/core/__tests__/ReactCompositeComponentState-test.js
index 8120c74e60..4f6a1e2da7 100644
--- a/src/core/__tests__/ReactCompositeComponentState-test.js
+++ b/src/core/__tests__/ReactCompositeComponentState-test.js
@@ -155,67 +155,67 @@ describe('ReactCompositeComponent-state', function() {
 
     expect(stateListener.mock.calls).toEqual([
       // there is no state when getInitialState() is called
-      [ 'getInitialState', null ],
-      [ 'componentWillMount-start', 'red' ],
+      ['getInitialState', null],
+      ['componentWillMount-start', 'red'],
       // setState()'s only enqueue pending states.
-      [ 'componentWillMount-after-sunrise', 'red' ],
-      [ 'componentWillMount-end', 'red' ],
+      ['componentWillMount-after-sunrise', 'red'],
+      ['componentWillMount-end', 'red'],
       // pending state queue is processed
-      [ 'before-setState-sunrise', 'red' ],
-      [ 'after-setState-sunrise', 'sunrise' ],
-      [ 'after-setState-orange', 'orange' ],
+      ['before-setState-sunrise', 'red'],
+      ['after-setState-sunrise', 'sunrise'],
+      ['after-setState-orange', 'orange'],
       // pending state has been applied
-      [ 'render', 'orange' ],
-      [ 'componentDidMount-start', 'orange' ],
+      ['render', 'orange'],
+      ['componentDidMount-start', 'orange'],
       // setState-sunrise and setState-orange should be called here,
       // after the bug in #1740
       // componentDidMount() called setState({color:'yellow'}), which is async.
       // The update doesn't happen until the next flush.
-      [ 'componentDidMount-end', 'orange' ],
-      [ 'shouldComponentUpdate-currentState', 'orange' ],
-      [ 'shouldComponentUpdate-nextState', 'yellow' ],
-      [ 'componentWillUpdate-currentState', 'orange' ],
-      [ 'componentWillUpdate-nextState', 'yellow' ],
-      [ 'render', 'yellow' ],
-      [ 'componentDidUpdate-currentState', 'yellow' ],
-      [ 'componentDidUpdate-prevState', 'orange' ],
-      [ 'setState-yellow', 'yellow' ],
-      [ 'initial-callback', 'yellow' ],
-      [ 'componentWillReceiveProps-start', 'yellow' ],
+      ['componentDidMount-end', 'orange'],
+      ['shouldComponentUpdate-currentState', 'orange'],
+      ['shouldComponentUpdate-nextState', 'yellow'],
+      ['componentWillUpdate-currentState', 'orange'],
+      ['componentWillUpdate-nextState', 'yellow'],
+      ['render', 'yellow'],
+      ['componentDidUpdate-currentState', 'yellow'],
+      ['componentDidUpdate-prevState', 'orange'],
+      ['setState-yellow', 'yellow'],
+      ['initial-callback', 'yellow'],
+      ['componentWillReceiveProps-start', 'yellow'],
       // setState({color:'green'}) only enqueues a pending state.
-      [ 'componentWillReceiveProps-end', 'yellow' ],
+      ['componentWillReceiveProps-end', 'yellow'],
       // pending state queue is processed
       // before-setState-receiveProps never called, due to replaceState.
-      [ 'before-setState-again-receiveProps', undefined ],
-      [ 'after-setState-receiveProps', 'green' ],
-      [ 'shouldComponentUpdate-currentState', 'yellow' ],
-      [ 'shouldComponentUpdate-nextState', 'green' ],
-      [ 'componentWillUpdate-currentState', 'yellow' ],
-      [ 'componentWillUpdate-nextState', 'green' ],
-      [ 'render', 'green' ],
-      [ 'componentDidUpdate-currentState', 'green' ],
-      [ 'componentDidUpdate-prevState', 'yellow' ],
-      [ 'setState-receiveProps', 'green' ],
-      [ 'setProps', 'green' ],
+      ['before-setState-again-receiveProps', undefined],
+      ['after-setState-receiveProps', 'green'],
+      ['shouldComponentUpdate-currentState', 'yellow'],
+      ['shouldComponentUpdate-nextState', 'green'],
+      ['componentWillUpdate-currentState', 'yellow'],
+      ['componentWillUpdate-nextState', 'green'],
+      ['render', 'green'],
+      ['componentDidUpdate-currentState', 'green'],
+      ['componentDidUpdate-prevState', 'yellow'],
+      ['setState-receiveProps', 'green'],
+      ['setProps', 'green'],
       // setFavoriteColor('blue')
-      [ 'shouldComponentUpdate-currentState', 'green' ],
-      [ 'shouldComponentUpdate-nextState', 'blue' ],
-      [ 'componentWillUpdate-currentState', 'green' ],
-      [ 'componentWillUpdate-nextState', 'blue' ],
-      [ 'render', 'blue' ],
-      [ 'componentDidUpdate-currentState', 'blue' ],
-      [ 'componentDidUpdate-prevState', 'green' ],
-      [ 'setFavoriteColor', 'blue' ],
+      ['shouldComponentUpdate-currentState', 'green'],
+      ['shouldComponentUpdate-nextState', 'blue'],
+      ['componentWillUpdate-currentState', 'green'],
+      ['componentWillUpdate-nextState', 'blue'],
+      ['render', 'blue'],
+      ['componentDidUpdate-currentState', 'blue'],
+      ['componentDidUpdate-prevState', 'green'],
+      ['setFavoriteColor', 'blue'],
       // forceUpdate()
-      [ 'componentWillUpdate-currentState', 'blue' ],
-      [ 'componentWillUpdate-nextState', 'blue' ],
-      [ 'render', 'blue' ],
-      [ 'componentDidUpdate-currentState', 'blue' ],
-      [ 'componentDidUpdate-prevState', 'blue' ],
-      [ 'forceUpdate', 'blue' ],
+      ['componentWillUpdate-currentState', 'blue'],
+      ['componentWillUpdate-nextState', 'blue'],
+      ['render', 'blue'],
+      ['componentDidUpdate-currentState', 'blue'],
+      ['componentDidUpdate-prevState', 'blue'],
+      ['forceUpdate', 'blue'],
       // unmountComponent()
       // state is available within `componentWillUnmount()`
-      [ 'componentWillUnmount', 'blue' ]
+      ['componentWillUnmount', 'blue']
     ]);
   });
 });
diff --git a/src/modern/element/__tests__/ReactJSXElementValidator-test.js b/src/modern/element/__tests__/ReactJSXElementValidator-test.js
index 7eed4cbdaf..f5d64bccf8 100644
--- a/src/modern/element/__tests__/ReactJSXElementValidator-test.js
+++ b/src/modern/element/__tests__/ReactJSXElementValidator-test.js
@@ -61,7 +61,7 @@ describe('ReactJSXElementValidator', function() {
       render() {
         return (
           <InnerComponent
-            childSet={[ <Component />, <Component /> ]}
+            childSet={[<Component />, <Component />]}
           />
         );
       }
@@ -103,7 +103,7 @@ describe('ReactJSXElementValidator', function() {
   it('does not warns for arrays of elements with keys', function() {
     spyOn(console, 'warn');
 
-    <Component>{[ <Component key="#1" />, <Component key="#2" /> ]}</Component>;
+    <Component>{[<Component key="#1" />, <Component key="#2" />]}</Component>;
 
     expect(console.warn.argsForCall.length).toBe(0);
   });
diff --git a/src/utils/__tests__/ReactChildren-test.js b/src/utils/__tests__/ReactChildren-test.js
index 95b60a8460..80d266f774 100644
--- a/src/utils/__tests__/ReactChildren-test.js
+++ b/src/utils/__tests__/ReactChildren-test.js
@@ -434,7 +434,7 @@ describe('ReactChildren', function() {
   it('should warn if a fragment is accessed', function() {
     spyOn(console, 'warn');
     var child = React.createElement('span');
-    var frag = ReactChildren.map([ child, child ], function(c) {
+    var frag = ReactChildren.map([child, child], function(c) {
       return c;
     });
     for (var key in frag) {
@@ -444,7 +444,7 @@ describe('ReactChildren', function() {
     expect(console.warn.calls.length).toBe(1);
     expect(console.warn.calls[0].args[0]).toContain('is an opaque type');
 
-    var frag2 = ReactChildren.map([ child, child ], function(c) {
+    var frag2 = ReactChildren.map([child, child], function(c) {
       return c;
     });
     for (var key in frag2) {