Andreas Hocevar
130 lines
4.2 KiB
JavaScript
130 lines
4.2 KiB
JavaScript
// Copyright 2008 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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goog.provide('goog.a11y.aria.AnnouncerTest');
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goog.setTestOnly('goog.a11y.aria.AnnouncerTest');
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goog.require('goog.a11y.aria');
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goog.require('goog.a11y.aria.Announcer');
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goog.require('goog.a11y.aria.LivePriority');
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goog.require('goog.a11y.aria.State');
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goog.require('goog.array');
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goog.require('goog.dom');
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goog.require('goog.dom.iframe');
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goog.require('goog.testing.jsunit');
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var sandbox;
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var someDiv;
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var someSpan;
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function setUp() {
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sandbox = goog.dom.getElement('sandbox');
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someDiv = goog.dom.createDom('div', {id: 'someDiv'}, 'DIV');
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someSpan = goog.dom.createDom('span', {id: 'someSpan'}, 'SPAN');
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sandbox.appendChild(someDiv);
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someDiv.appendChild(someSpan);
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}
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function tearDown() {
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sandbox.innerHTML = '';
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someDiv = null;
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someSpan = null;
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}
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function testAnnouncerAndDispose() {
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var text = 'test content';
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var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
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announcer.say(text);
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checkLiveRegionContains(text, 'polite');
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goog.dispose(announcer);
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}
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function testAnnouncerTwice() {
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var text = 'test content1';
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var text2 = 'test content2';
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var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
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announcer.say(text);
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announcer.say(text2);
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checkLiveRegionContains(text2, 'polite');
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goog.dispose(announcer);
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}
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function testAnnouncerTwiceSameMessage() {
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var text = 'test content';
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var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
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announcer.say(text);
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var firstLiveRegion = getLiveRegion('polite');
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announcer.say(text);
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var secondLiveRegion = getLiveRegion('polite');
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assertNotEquals(firstLiveRegion, secondLiveRegion);
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checkLiveRegionContains(text, 'polite');
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goog.dispose(announcer);
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}
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function testAnnouncerAssertive() {
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var text = 'test content';
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var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
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announcer.say(text, goog.a11y.aria.LivePriority.ASSERTIVE);
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checkLiveRegionContains(text, 'assertive');
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goog.dispose(announcer);
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}
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function testAnnouncerInIframe() {
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var text = 'test content';
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var frame = goog.dom.iframe.createWithContent(sandbox);
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var helper = goog.dom.getDomHelper(
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goog.dom.getFrameContentDocument(frame).body);
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var announcer = new goog.a11y.aria.Announcer(helper);
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announcer.say(text, 'polite', helper);
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checkLiveRegionContains(text, 'polite', helper);
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goog.dispose(announcer);
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}
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function testAnnouncerWithAriaHidden() {
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var text = 'test content1';
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var text2 = 'test content2';
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var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
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announcer.say(text);
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// Set aria-hidden attribute on the live region (simulates a modal dialog
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// being opened).
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var liveRegion = getLiveRegion('polite');
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goog.a11y.aria.setState(liveRegion, goog.a11y.aria.State.HIDDEN, true);
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// Announce a new message and make sure that the aria-hidden was removed.
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announcer.say(text2);
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checkLiveRegionContains(text2, 'polite');
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liveRegion = getLiveRegion('polite');
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assertEquals('',
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goog.a11y.aria.getState(liveRegion, goog.a11y.aria.State.HIDDEN));
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goog.dispose(announcer);
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}
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function getLiveRegion(priority, opt_domHelper) {
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var dom = opt_domHelper || goog.dom.getDomHelper();
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var divs = dom.getElementsByTagNameAndClass('div', null);
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var liveRegions = [];
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goog.array.forEach(divs, function(div) {
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if (goog.a11y.aria.getState(div, 'live') == priority) {
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liveRegions.push(div);
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}
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});
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assertEquals(1, liveRegions.length);
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return liveRegions[0];
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}
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function checkLiveRegionContains(text, priority, opt_domHelper) {
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var liveRegion = getLiveRegion(priority, opt_domHelper);
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assertEquals(text, goog.dom.getTextContent(liveRegion));
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}
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