Select-to-speak extension code

chrome/browser/resources/chromeos/select_to_speak/select_to_speak_unittest.gtestjs

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * Test fixture for select_to_speak.js.
+ * @constructor
+ * @extends {testing.Test}
+ */
+function SelectToSpeakUnitTest () {
+  testing.Test.call(this);
+}
+
+SelectToSpeakUnitTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /** @override */
+  extraLibraries: [
+    'test_support.js',
+    'select_to_speak.js'
+  ]
+};
+
+TEST_F('SelectToSpeakUnitTest', 'Overlaps', function() {
+  var rect1 = {left: 0, top: 0, width: 100, height: 100};
+  var rect2 = {left: 80, top: 0, width: 100, height: 20};
+  var rect3 = {left: 0, top: 80, width: 20, height: 100};
+
+  assertTrue(overlaps(rect1, rect1));
+  assertTrue(overlaps(rect2, rect2));
+  assertTrue(overlaps(rect3, rect3));
+  assertTrue(overlaps(rect1, rect2));
+  assertTrue(overlaps(rect1, rect3));
+  assertFalse(overlaps(rect2, rect3));
+});
+
+TEST_F('SelectToSpeakUnitTest', 'RectFromPoints', function() {
+  var rect = {left: 10, top: 20, width: 50, height: 60};
+
+  assertNotEquals(
+      JSON.stringify(rect),
+      JSON.stringify(rectFromPoints(0, 0, 10, 10)));
+  assertEquals(
+      JSON.stringify(rect),
+      JSON.stringify(rectFromPoints(10, 20, 60, 80)));
+  assertEquals(
+      JSON.stringify(rect),
+      JSON.stringify(rectFromPoints(60, 20, 10, 80)));
+  assertEquals(
+      JSON.stringify(rect),
+      JSON.stringify(rectFromPoints(10, 80, 60, 20)));
+  assertEquals(
+      JSON.stringify(rect),
+      JSON.stringify(rectFromPoints(60, 80, 10, 20)));
+});