Add unit test for l10n.js

remoting/webapp/unittests/l10n_unittest.js

+// 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.
+
+(function() {
+
+'use strict';
+
+module('l10n', {
+  setup: function() {
+    sinon.stub(chrome.i18n, 'getMessage');
+  },
+  teardown: function() {
+    chrome.i18n.getMessage.restore();
+  }
+});
+
+test('getTranslationOrError(tag) should return tag on error', function() {
+  var translation = l10n.getTranslationOrError('non_existent_tag');
+  equal(translation, 'non_existent_tag');
+});
+
+test('localizeElementFromTag() should replace innerText by default',
+  function() {
+    var element = document.createElement('div');
+    chrome.i18n.getMessage.withArgs('tag').returns('<b>Hello World</b>');
+
+    l10n.localizeElementFromTag(element, 'tag');
+
+    equal(element.innerHTML, '&lt;b&gt;Hello World&lt;/b&gt;');
+});
+
+test('localizeElementFromTag() should replace innerHTML if flag is set',
+  function() {
+    var element = document.createElement('div');
+    chrome.i18n.getMessage.withArgs('tag').returns('<b>Hello World</b>');
+
+    l10n.localizeElementFromTag(element, 'tag', null, true);
+
+    equal(element.innerHTML, '<b>Hello World</b>');
+});
+
+test(
+  'localizeElement() should replace innerText using the "i18n-content" ' +
+  'attribute as the tag',
+  function() {
+    var element = document.createElement('div');
+    element.setAttribute('i18n-content', 'tag');
+    chrome.i18n.getMessage.withArgs('tag').returns('<b>Hello World</b>');
+
+    l10n.localizeElement(element);
+
+    equal(element.innerHTML, '&lt;b&gt;Hello World&lt;/b&gt;');
+});
+
+test(
+  'localize() should replace element title using the "i18n-title" ' +
+  'attribute as the tag',
+  function() {
+    var fixture = document.getElementById('qunit-fixture');
+    fixture.innerHTML = '<div class="target" i18n-title="tag"></div>';
+    chrome.i18n.getMessage.withArgs('tag').returns('localized title');
+
+    l10n.localize();
+
+    var target = document.querySelector('.target');
+    equal(target.title, 'localized title');
+});
+
+test('localize() should support string substitutions', function() {
+  var fixture = document.getElementById('qunit-fixture');
+  fixture.innerHTML =
+  '<div class="target" ' +
+      'i18n-content="tag" ' +
+      'i18n-value-1="param1" ' +
+      'i18n-value-2="param2">' +
+  '</div>';
+
+  chrome.i18n.getMessage.withArgs('tag', ['param1', 'param2'])
+      .returns('localized');
+
+  l10n.localize();
+
+  var target = document.querySelector('.target');
+  equal(target.innerText, 'localized');
+});
+
+test('localize() should support tag substitutions', function() {
+  var fixture = document.getElementById('qunit-fixture');
+  fixture.innerHTML =
+      '<div class="target" i18n-content="tag"' +
+      ' i18n-value-name-1="tag1" i18n-value-name-2="tag2"></div>';
+
+  var getMessage = chrome.i18n.getMessage;
+  getMessage.withArgs('tag1').returns('param1');
+  getMessage.withArgs('tag2').returns('param2');
+  getMessage.withArgs('tag', ['param1', 'param2']).returns('localized');
+
+  l10n.localize();
+
+  var target = document.querySelector('.target');
+  equal(target.innerText, 'localized');
+});
+
+})();