Port aria_util_test.js to run as a WebUI test.

chrome/browser/resources/chromeos/chromevox/common/aria_util_test.js

Index: chrome/browser/resources/chromeos/chromevox/common/aria_util_test.js
diff --git a/chrome/browser/resources/chromeos/chromevox/common/aria_util_test.js b/chrome/browser/resources/chromeos/chromevox/common/aria_util_test.js
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+// Copyright 2014 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.
+
+// Include test fixture.
+GEN_INCLUDE(['../testing/chromevox_unittest_base.js']);
+
+/**
+ * Test fixture for aria_util.js.
+ * @constructor
+ * @extends {ChromeVoxUnitTestBase}
+ */
+function CvoxAriaUtilUnitTest() {}
+
+CvoxAriaUtilUnitTest.prototype = {
+  __proto__: ChromeVoxUnitTestBase.prototype,
+
+  /** @override */
+  extraLibraries: [
+    'aria_util.js',
+    'dom_util.js',
+    'node_state.js',
+    'chromevox.js',
+    '../host/interface/abstract_earcons.js']
+};
+
+TEST_F('CvoxAriaUtilUnitTest', 'GetStateGridWithActiveCell', function() {
+  this.loadDoc(function() {/*!
+    <div id="grid" role="grid" aria-activedescendant="cell">
+      <div role="row">
+        <div id="cell" role="gridcell">
+      </div>
+    </div>
+  */});
+  assertThat(
+      cvox.AriaUtil.getStateMsgs($('grid'), true),
+      eqJSON([['aria_role_gridcell_pos', 1, 1]]));
+});
+
+TEST_F('CvoxAriaUtilUnitTest', 'GetActiveDescendant', function() {
+  this.loadDoc(function() {/*!
+    <div id="top" aria-activedescendant="child">
+      <div id="child" />
+    </div>
+    <div id="top_2" aria-activedescendant="child_2">
+      <div id="child_2" aria-activedescendant="grandchild_2">
+        <div id="grandchild_2" />
+      </div>
+    </div>
+
+    <h1>The buggy cases.</h1>
+    <div id="loop" aria-activedescendant="loop" />
+    <div id="circleA" aria-activedescendant="circleB">
+      <div id="circleB" aria-activedescendant="circleA" />
+    </div>
+  */});
+
+  // The typical case.
+  var topElt = $('top');
+  var childElt = $('child');
+  assertEquals(childElt, cvox.AriaUtil.getActiveDescendant(topElt));
+
+  // childElt has not aria-activedescendant, so return null.
+  assertEquals(null, cvox.AriaUtil.getActiveDescendant(childElt));
+
+  // The chained case.
+  var top2Elt = $('top_2');
+  var grandchild2Elt = $('grandchild_2');
+  assertEquals(grandchild2Elt, cvox.AriaUtil.getActiveDescendant(top2Elt));
+
+  // The buggy cases.  These are invalid, so return null as if the
+  // aria-activedescendant tags did not exist.
+  var loopElt = $('loop');
+  assertEquals(null, cvox.AriaUtil.getActiveDescendant(loopElt));
+
+  var circleAElt = $('circleA');
+  assertEquals(null, cvox.AriaUtil.getActiveDescendant(circleAElt));
+});
+
+TEST_F('CvoxAriaUtilUnitTest', 'ListIndexAndState', function() {
+  this.loadDoc(function() {/*!
+    <div id="l" role="listbox" tabindex="0" aria-activedescendant="l2">
+      <div id="l1" role="option">A</div>
+      <div id="l2" role="option">B</div>
+      <div id="l3" role="option">C</div>
+    </div>
+    <div id="a" role="listbox" tabindex="0" aria-activedescendant="a2">
+      <div id="a1" role="option" aria-setsize="10" aria-posinset="5">A</div>
+      <div id="a2" role="option" aria-setsize="20" aria-posinset="15">B</div>
+      <div id="a3" role="option" aria-setsize="30" aria-posinset="25">C</div>
+    </div>
+    <div id="b" role="listbox" tabindex="0" aria-activedescendant="b2">
+      <div id="b1" role="option" aria-posinset="3">A</div>
+      <div id="b2" role="option" aria-posinset="2">B</div>
+      <div id="b3" role="option" aria-posinset="1">C</div>
+    </div>
+  */});
+
+  var optionElt = $('l2');
+  assertThat(
+      cvox.AriaUtil.getStateMsgs(optionElt),
+      eqJSON([['list_position', 2, 3]]));
+
+  var ariaOptionElt = $('a2');
+  assertThat(
+      cvox.AriaUtil.getStateMsgs(ariaOptionElt),
+      eqJSON([['list_position', 15, 20]]));
+
+  ariaOptionElt = $('b3');
+  assertThat(
+      cvox.AriaUtil.getStateMsgs(ariaOptionElt),
+      eqJSON([['list_position', 1, 3]]));
+});
+
+TEST_F('CvoxAriaUtilUnitTest', 'GetLiveRegions', function() {
+  this.loadDoc(function() {/*!
+   <div id="outer">
+    <div id="progress" role="progressbar" aria-live="polite" aria-valuenow="1">
+      <div id="ptext">
+        1% complete.
+      </div>
+    </div>
+    <div id="progress2" role="progressbar" aria-live="polite" aria-valuenow="1">
+      <div id="ptext2">
+        1% complete.
+      </div>
+    </div>
+   </div>
+  */});
+
+  var progressLiveRegions = cvox.AriaUtil.getLiveRegions(progress);
+  assertEquals(1, progressLiveRegions.length);
+  assertNotEquals(-1, progressLiveRegions.indexOf(progress));
+
+  var outerLiveRegions = cvox.AriaUtil.getLiveRegions(outer);
+  assertEquals(2, outerLiveRegions.length);
+  assertNotEquals(-1, outerLiveRegions.indexOf(progress));
+  assertNotEquals(-1, outerLiveRegions.indexOf(progress2));
+
+  // getLiveRegions works walking up the tree as well.
+  var ptextLiveRegions = cvox.AriaUtil.getLiveRegions(ptext);
+  assertEquals(1, ptextLiveRegions.length);
+  assertNotEquals(-1, ptextLiveRegions.indexOf(progress));
+});