<NME> array.spec.ts
<BEF> ADDFILE
<MSG> test(util/array): add unit test of partitionArray

<DFF> @@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2016 Google Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {partitionArray} from 'neuroglancer/util/array';
+
+describe('partitionArray', () => {
+  it('basic test', () => {
+    let arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+    let newEnd = partitionArray(arr, 2, 9, x => (x % 2) === 0);
+    expect(arr).toEqual([0, 1, 2, 8, 4, 6, 7, 5, 3, 9, 10]);
+    expect(newEnd).toBe(6);
+  });
+});

test(util/array): add unit test of partitionArray