diff --git a/Libraries/Utilities/__tests__/MatrixMath-test.js b/Libraries/Utilities/__tests__/MatrixMath-test.js
index 4ca108e39..5bfa1e9d7 100644
--- a/Libraries/Utilities/__tests__/MatrixMath-test.js
+++ b/Libraries/Utilities/__tests__/MatrixMath-test.js
@@ -17,6 +17,10 @@ function degreesToRadians(degrees) {
   return degrees * Math.PI / 180;
 }
 
+function convertZeroes(degrees) {
+  return degrees.map(value => value === -0 ? 0 : value);
+}
+
 describe('MatrixMath', () => {
 
   it('decomposes a 4x4 matrix to produce accurate Z-axis angles', () => {
@@ -26,11 +30,11 @@ describe('MatrixMath', () => {
 
     [30, 45, 60, 75, 90, 100, 115, 120, 133, 167].forEach(angle => {
       var mat = MatrixMath.createRotateZ(degreesToRadians(angle));
-      expect(MatrixMath.decomposeMatrix(mat).rotationDegrees)
+      expect(convertZeroes(MatrixMath.decomposeMatrix(mat).rotationDegrees))
         .toEqual([0, 0, angle]);
 
       mat = MatrixMath.createRotateZ(degreesToRadians(-angle));
-      expect(MatrixMath.decomposeMatrix(mat).rotationDegrees)
+      expect(convertZeroes(MatrixMath.decomposeMatrix(mat).rotationDegrees))
         .toEqual([0, 0, -angle]);
     });
 
@@ -51,7 +55,7 @@ describe('MatrixMath', () => {
     // 360 is expressed as 0
     expect(MatrixMath.decomposeMatrix(
       MatrixMath.createRotateZ(degreesToRadians(360))
-    ).rotationDegrees).toEqual([0, 0, 0]);
+    ).rotationDegrees).toEqual([0, 0, -0]);
 
     expect(MatrixMath.decomposeMatrix(
       MatrixMath.createRotateZ(degreesToRadians(33.33333333))
@@ -83,12 +87,12 @@ describe('MatrixMath', () => {
     [30, 45, 60, 75, 90, 100, 110, 120, 133, 167].forEach(angle => {
       mat = MatrixMath.createIdentityMatrix();
       MatrixMath.reuseRotateYCommand(mat, degreesToRadians(angle));
-      expect(MatrixMath.decomposeMatrix(mat).rotationDegrees)
+      expect(convertZeroes(MatrixMath.decomposeMatrix(mat).rotationDegrees))
         .toEqual([0, angle, 0]);
 
       mat = MatrixMath.createIdentityMatrix();
       MatrixMath.reuseRotateYCommand(mat, degreesToRadians(-angle));
-      expect(MatrixMath.decomposeMatrix(mat).rotationDegrees)
+      expect(convertZeroes(MatrixMath.decomposeMatrix(mat).rotationDegrees))
         .toEqual([0, -angle, 0]);
     });
 
@@ -115,7 +119,7 @@ describe('MatrixMath', () => {
     [30, 45, 60, 75, 90, 100, 110, 120, 133, 167].forEach(angle => {
       mat = MatrixMath.createIdentityMatrix();
       MatrixMath.reuseRotateXCommand(mat, degreesToRadians(angle));
-      expect(MatrixMath.decomposeMatrix(mat).rotationDegrees)
+      expect(convertZeroes(MatrixMath.decomposeMatrix(mat).rotationDegrees))
         .toEqual([angle, 0, 0]);
     });
 
diff --git a/Libraries/Utilities/__tests__/MessageQueue-test.js b/Libraries/Utilities/__tests__/MessageQueue-test.js
index 8b9b689fd..64c4c1c1a 100644
--- a/Libraries/Utilities/__tests__/MessageQueue-test.js
+++ b/Libraries/Utilities/__tests__/MessageQueue-test.js
@@ -55,15 +55,15 @@ describe('MessageQueue', () => {
   });
 
   it('should call a local function with id', () => {
-    expect(TestModule.testHook1.callCount).toEqual(0);
+    expect(TestModule.testHook1.calls.count()).toEqual(0);
     queue.__callFunction(0, 0, [1]);
-    expect(TestModule.testHook1.callCount).toEqual(1);
+    expect(TestModule.testHook1.calls.count()).toEqual(1);
   });
 
   it('should call a local function with the function name', () => {
-    expect(TestModule.testHook2.callCount).toEqual(0);
+    expect(TestModule.testHook2.calls.count()).toEqual(0);
     queue.__callFunction('one', 'testHook2', [2]);
-    expect(TestModule.testHook2.callCount).toEqual(1);
+    expect(TestModule.testHook2.calls.count()).toEqual(1);
   });
 
   it('should generate native modules', () => {
@@ -78,7 +78,7 @@ describe('MessageQueue', () => {
     assertQueue(flushedQueue, 0, 0, 1, ['foo', 0, 1]);
   });
 
-  it('should call the stored callback', (done) => {
+  it('should call the stored callback', () => {
     var done = false;
     queue.RemoteModules.one.remoteMethod1(() => { done = true; });
     queue.__invokeCallback(1);
diff --git a/package.json b/package.json
index 7f47f5a9b..b36379dd2 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
       "^image![a-zA-Z0-9$_-]+$": "GlobalImageStub",
       "^[./a-zA-Z0-9$_-]+\\.png$": "RelativeImageStub"
     },
+    "testRunner": "<rootDir>/node_modules/jest-cli/src/testRunners/jasmine/jasmine2.js",
     "testPathIgnorePatterns": [
       "/node_modules/"
     ],
diff --git a/packager/react-packager/src/Resolver/polyfills/__tests__/loadBundles-test.js b/packager/react-packager/src/Resolver/polyfills/__tests__/loadBundles-test.js
index ad0dcf279..39d687881 100644
--- a/packager/react-packager/src/Resolver/polyfills/__tests__/loadBundles-test.js
+++ b/packager/react-packager/src/Resolver/polyfills/__tests__/loadBundles-test.js
@@ -34,8 +34,7 @@ describe('loadBundles', () => {
 
   pit('shouldn\'t request already loaded bundles', () => {
     loadBundles.mockImpl((bundles, callback) => callback());
-    return global
-      .__loadBundles(['bundle.0'])
+    return global.__loadBundles(['bundle.0'])
       .then(() => global.__loadBundles(['bundle.0']))
       .then(() => expect(loadBundlesCalls.length).toBe(1));
   });
diff --git a/packager/react-packager/src/Resolver/polyfills/loadBundles.js b/packager/react-packager/src/Resolver/polyfills/loadBundles.js
index 551d4cac2..4e893eda9 100644
--- a/packager/react-packager/src/Resolver/polyfills/loadBundles.js
+++ b/packager/react-packager/src/Resolver/polyfills/loadBundles.js
@@ -1,7 +1,7 @@
 /* eslint global-strict:0 */
 (global => {
   let loadBundlesOnNative = (bundles) =>
-    new Promise((_, resolve) =>
+    new Promise((resolve) =>
       require('NativeModules').RCTBundlesLoader.loadBundles(bundles, resolve));
 
   let requestedBundles = Object.create(null);