batchnorm_tests.ts.patch

diff --git a/src/ops/batchnorm_test.ts b/src/ops/batchnorm_test.ts
index c8ac335..6bd30e1 100644
--- a/src/ops/batchnorm_test.ts
+++ b/src/ops/batchnorm_test.ts
@@ -16,8 +16,10 @@
  */
 
 import * as tf from '../index';
-import {describeWithFlags} from '../jasmine_util';
+import {describeWithFlags, TEST_ENVS} from '../jasmine_util';
 import {ALL_ENVS, expectArraysClose, WEBGL_ENVS} from '../test_util';
+import {MathBackendWebGL} from '../kernels/backend_webgl';
+import {ENV} from '../environment';
 
 describeWithFlags('packed batchNormalization', WEBGL_ENVS, () => {
   const webglPackedBatchNormalizationSavedFlag =
@@ -161,6 +163,18 @@ describeWithFlags('packed batchNormalization', WEBGL_ENVS, () => {
   });
 });
 
+if (!ENV.get('IS_NODE')) {
+    TEST_ENVS.push(
+      {
+        name: 'webgl2-packedBinary',
+        factory: () => new MathBackendWebGL(),
+        features: {'WEBGL_VERSION': ENV.get('WEBGL_VERSION'),
+                   'WEBGL_CPU_FORWARD': false,
+                   'WEBGL_PACK': true}
+      }
+    );
+  }
+
 describeWithFlags('batchNormalization4D', ALL_ENVS, () => {
   it('simple batchnorm4D, no offset or scale, 2x1x1x2', () => {
     const x = tf.tensor4d([2, 4, 9, 23], [2, 1, 1, 2]);
@@ -358,6 +372,12 @@ describeWithFlags('batchNormalization4D', ALL_ENVS, () => {
   });
 });
 
+if (!ENV.get('IS_NODE')) {
+    if (TEST_ENVS.pop().features['WEBGL_PACK'] !== true) {
+      throw new Error('Error with WEBGL_PACK setup.');
+    }
+  }
+
 describeWithFlags('batchNormalization3D', ALL_ENVS, () => {
   it('simple batchnorm3D, no offset or scale, 2x1x2', () => {
     const x = tf.tensor3d([2, 4, 9, 23], [2, 1, 2]);