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// Copyright 2008 The Closure Library Authors. All Rights Reserved.
//
// 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.
goog.provide('goog.a11y.aria.AnnouncerTest');
goog.setTestOnly('goog.a11y.aria.AnnouncerTest');
goog.require('goog.a11y.aria');
goog.require('goog.a11y.aria.Announcer');
goog.require('goog.a11y.aria.LivePriority');
goog.require('goog.a11y.aria.State');
goog.require('goog.array');
goog.require('goog.dom');
goog.require('goog.dom.TagName');
goog.require('goog.dom.iframe');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.jsunit');
var sandbox;
var someDiv;
var someSpan;
var mockClock;
function setUp() {
sandbox = goog.dom.getElement('sandbox');
someDiv = goog.dom.createDom(goog.dom.TagName.DIV, {id: 'someDiv'}, 'DIV');
someSpan =
goog.dom.createDom(goog.dom.TagName.SPAN, {id: 'someSpan'}, 'SPAN');
sandbox.appendChild(someDiv);
someDiv.appendChild(someSpan);
mockClock = new goog.testing.MockClock(true);
}
function tearDown() {
goog.dom.removeChildren(sandbox);
someDiv = null;
someSpan = null;
goog.dispose(mockClock);
}
function testAnnouncerAndDispose() {
var text = 'test content';
var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
announcer.say(text);
checkLiveRegionContains(text, 'polite');
goog.dispose(announcer);
}
function testAnnouncerTwice() {
var text = 'test content1';
var text2 = 'test content2';
var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
announcer.say(text);
announcer.say(text2);
checkLiveRegionContains(text2, 'polite');
goog.dispose(announcer);
}
function testAnnouncerTwiceSameMessage() {
var text = 'test content';
var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
announcer.say(text);
var firstLiveRegion = getLiveRegion('polite');
announcer.say(text, undefined);
var secondLiveRegion = getLiveRegion('polite');
assertEquals(firstLiveRegion, secondLiveRegion);
checkLiveRegionContains(text, 'polite');
goog.dispose(announcer);
}
function testAnnouncerAssertive() {
var text = 'test content';
var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
announcer.say(text, goog.a11y.aria.LivePriority.ASSERTIVE);
checkLiveRegionContains(text, 'assertive');
goog.dispose(announcer);
}
function testAnnouncerInIframe() {
var text = 'test content';
var frame = goog.dom.iframe.createWithContent(sandbox);
var helper =
goog.dom.getDomHelper(goog.dom.getFrameContentDocument(frame).body);
var announcer = new goog.a11y.aria.Announcer(helper);
announcer.say(text, 'polite', helper);
checkLiveRegionContains(text, 'polite', helper);
goog.dispose(announcer);
}
function testAnnouncerWithAriaHidden() {
var text = 'test content1';
var text2 = 'test content2';
var announcer = new goog.a11y.aria.Announcer(goog.dom.getDomHelper());
announcer.say(text);
// Set aria-hidden attribute on the live region (simulates a modal dialog
// being opened).
var liveRegion = getLiveRegion('polite');
goog.a11y.aria.setState(liveRegion, goog.a11y.aria.State.HIDDEN, true);
// Announce a new message and make sure that the aria-hidden was removed.
announcer.say(text2);
checkLiveRegionContains(text2, 'polite');
assertEquals(
'', goog.a11y.aria.getState(liveRegion, goog.a11y.aria.State.HIDDEN));
goog.dispose(announcer);
}
function getLiveRegion(priority, opt_domHelper) {
var dom = opt_domHelper || goog.dom.getDomHelper();
var divs = dom.getElementsByTagNameAndClass(goog.dom.TagName.DIV, null);
var liveRegions = [];
goog.array.forEach(divs, function(div) {
if (goog.a11y.aria.getState(div, 'live') == priority) {
liveRegions.push(div);
}
});
assertEquals(1, liveRegions.length);
return liveRegions[0];
}
function checkLiveRegionContains(text, priority, opt_domHelper) {
var liveRegion = getLiveRegion(priority, opt_domHelper);
mockClock.tick(1);
assertEquals(text, goog.dom.getTextContent(liveRegion));
}
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