More ChromeVox tests

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

+// Copyright 2013 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.
+ * @constructor
+ * @extends {ChromeVoxUnitTestBase}
+ */
+function CvoxShadowUnitTest() {}
+
+CvoxShadowUnitTest.prototype = {
+  __proto__: ChromeVoxUnitTestBase.prototype,
+
+  /** @override */
+  closureModuleDeps: [
+    'cvox.EditableTextAreaShadow'
+  ]
+};
+
+TEST_F('CvoxShadowUnitTest', 'MultilineLines', function() {
+  this.loadDoc(function() {/*!
+    <div><textarea id="area">
+one
+
+two
+
+three
+</textarea></div> */});
+
+  var area = $('area');
+
+  var shadow = new cvox.EditableTextAreaShadow();
+  shadow.update(area);
+  assertEquals(0, shadow.getLineIndex(0));
+  assertEquals(0, shadow.getLineIndex(3));
+  assertEquals(1, shadow.getLineIndex(4));
+  assertEquals(2, shadow.getLineIndex(5));
+  assertEquals(2, shadow.getLineIndex(8));
+  assertEquals(3, shadow.getLineIndex(9));
+  assertEquals(4, shadow.getLineIndex(10));
+  assertEquals(4, shadow.getLineIndex(14));
+});
+
+/**
+ * Test the get line of a multiline textarea with wrapping instead of
+ * explicit newlines.
+ * @export
+ */
+TEST_F('CvoxShadowUnitTest', 'MultilineWrap', function() {
+  this.loadDoc(function() {/*!
+    <div><textarea id="area"
+          cols=4 rows=20>One two thr fou fiv six sev eig</textarea>
+    </div> */});
+
+  var area = $('area');
+
+  var shadow = new cvox.EditableTextAreaShadow();
+  shadow.update(area);
+  for (var i = 0; i < 32; i++) {
+    assertEquals(Math.floor(i / 4), shadow.getLineIndex(i));
+  }
+});