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https://bugzilla.mozilla.org/show_bug.cgi?id=889335
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-->
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<head>
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<meta charset="utf-8">
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<title>Test for NavigatorLanguage</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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Mozilla Bug 889335
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<script type="application/javascript">
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"use strict";
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SimpleTest.waitForExplicitFinish();
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/** Test for NavigatorLanguage **/
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var actualLanguageChangesFromHandler = 0;
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var actualLanguageChangesFromAVL = 0;
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var expectedLanguageChanges = 0;
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var testValues = [
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{ accept_languages: 'foo', language: 'foo', languages: ['foo'] },
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{ accept_languages: '', language: '', languages: [] },
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{ accept_languages: 'foo,bar', language: 'foo', languages: [ 'foo', 'bar' ] },
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{ accept_languages: ' foo , bar ', language: 'foo', languages: [ 'foo', 'bar' ] },
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{ accept_languages: ' foo ; bar ', language: 'foo ; bar', languages: [ 'foo ; bar' ] },
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{ accept_languages: '_foo_', language: '_foo_', languages: ['_foo_'] },
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{ accept_languages: 'en_', language: 'en-', languages: ['en-'] },
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{ accept_languages: 'en__', language: 'en-_', languages: ['en-_'] },
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{ accept_languages: 'en_US, fr_FR', language: 'en-US', languages: ['en-US', 'fr-FR'] },
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{ accept_languages: 'en_US_CA', language: 'en-US_CA', languages: ['en-US_CA'] },
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{ accept_languages: 'en_us-ca', language: 'en-US-CA', languages: ['en-US-CA'] },
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{ accept_languages: 'en_us-cal, en_us-c', language: 'en-US-cal', languages: ['en-US-cal', 'en-US-c'] },
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];
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var currentTestIdx = 0;
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var tests = [];
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function nextTest() {
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currentTestIdx++;
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if (currentTestIdx >= tests.length) {
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SimpleTest.finish();
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return;
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}
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tests[currentTestIdx]();
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}
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// Check that the API is there.
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tests.push(function testAPIPresence() {
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ok('language' in window.navigator);
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ok('languages' in window.navigator);
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ok('onlanguagechange' in window);
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nextTest();
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});
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// Check that calling navigator.languages return the same array, unless there
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// was a change.
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tests.push(function testArrayCached() {
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var previous = navigator.languages;
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is(navigator.languages, navigator.languages, "navigator.languages is cached");
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is(navigator.languages, previous, "navigator.languages is cached");
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window.onlanguagechange = function() {
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isnot(navigator.languages, previous, "navigator.languages cached value was updated");
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window.onlanguagechange = null;
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nextTest();
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}
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setTimeout(function() {
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'testArrayCached']]});
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}, 0);
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});
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// Test that event handler inside the <body> works as expected and that the
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// event has the expected properties.
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tests.push(function testEventProperties() {
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document.body.setAttribute('onlanguagechange',
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"document.body.removeAttribute('onlanguagechange');" +
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"is(event.cancelable, false); is(event.bubbles, false);" +
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"nextTest();");
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setTimeout(function() {
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'testEventProperties']]}, function() {});
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}, 0);
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});
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// Check that the returned values such as the behavior when the underlying
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// languages change.
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tests.push(function testBasicBehaviour() {
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function checkIfDoneAndProceed() {
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if (actualLanguageChangesFromHandler == actualLanguageChangesFromAVL) {
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if (genEvents.next().done) {
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window.onlanguagechange = null;
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window.removeEventListener('languagechange', languageChangeAVL);
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nextTest();
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}
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}
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}
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window.onlanguagechange = function() {
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actualLanguageChangesFromHandler++;
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checkIfDoneAndProceed();
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}
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function languageChangeAVL() {
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actualLanguageChangesFromAVL++;
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checkIfDoneAndProceed();
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}
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window.addEventListener('languagechange', languageChangeAVL);
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function* testEvents() {
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for (var i = 0; i < testValues.length; ++i) {
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var data = testValues[i];
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setTimeout(function(data) {
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', data.accept_languages]]});
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}, 0, data);
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expectedLanguageChanges++;
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yield undefined;
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is(actualLanguageChangesFromAVL, expectedLanguageChanges);
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is(actualLanguageChangesFromHandler, expectedLanguageChanges);
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is(navigator.language, data.language);
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is(navigator.languages.length, data.languages.length);
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if (navigator.languages.length > 0) {
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is(navigator.languages[0], navigator.language)
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}
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for (var j = 0; j < navigator.languages.length; ++j) {
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is(navigator.languages[j], data.languages[j]);
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}
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}
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}
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var genEvents = testEvents();
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genEvents.next();
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});
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// Check that the languagechange event isn't sent twice if the preference
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// is set to the same value.
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tests.push(function testOnlyFireIfRealChange() {
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function* changeLanguage() {
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setTimeout(function() {
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'fr-CA']]});
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});
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yield undefined;
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setTimeout(function() {
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// Twice the same change, should fire only one event.
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'fr-CA']]});
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setTimeout(function() {
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// A real change to tell the test it should now count how many changes were
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// received until now.
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'fr-FR']]});
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});
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});
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yield undefined;
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}
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var genChanges = changeLanguage();
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var doubleEventCount = 0;
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window.onlanguagechange = function() {
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if (navigator.language == 'fr-FR') {
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is(1, doubleEventCount);
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window.onlanguagechange = null;
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nextTest();
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return;
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}
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if (navigator.language == 'fr-CA') {
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doubleEventCount++;
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}
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genChanges.next();
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}
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genChanges.next();
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});
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// Check that there is no crash when a change happen after a window listening
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// to them is killed.
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tests.push(function testThatAddingAnEventDoesNotHaveSideEffects() {
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var frame = document.createElement('iframe');
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frame.srcdoc = '<script>window.onlanguagechange=function(){}<\/script>';
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document.body.appendChild(frame);
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frame.contentWindow.onload = function() {
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document.body.removeChild(frame);
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frame = null;
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SpecialPowers.exactGC(function() {
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// This should not crash.
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SpecialPowers.pushPrefEnv({"set": [['intl.accept_languages', 'en-GB']]}, nextTest);
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});
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}
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});
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// There is one test using document.body.
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addLoadEvent(function() {
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tests[0]();
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});
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</script>
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</body>
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</html>
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