Enables the user to select multiple languages for spellchecking (UI)

chrome/browser/ui/webui/options/multilanguage_options_webui_browsertest.js

+// Copyright 2015 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.
+
+GEN('#include "chrome/browser/ui/webui/options/multilanguage_options_webui_browsertest.h"');
+
+/**
+ * Test C++ fixture for Language Options WebUI testing.
+ * @constructor
+ * @extends {testing.Test}
+ */
+function MultilanguageOptionsWebUIBrowserTest() {}
+
+MultilanguageOptionsWebUIBrowserTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /**
+   * Browse to the language options page & call our preLoad().

[Dan Beam, 2015/06/25 02:44:28]

& -> and

eh, this whole doc comment should probably just be:

  /** @override */

[Julius, 2015/07/06 22:38:53]

Done.

+   */
+  browsePreload: 'chrome://settings-frame/languages',
+
+  /** @override */
+  typedefCppFixture: 'MultilanguageOptionsWebUIBrowserTest',
+
+  /** @override */
+  accessibilityIssuesAreErrors: true,

[Dan Beam, 2015/06/25 02:44:28]

reduce yo copy pasta

/** @return {Array<string>} The currently selected languages. */
getLanguages: function() {
  return Object.keys(LanguageOptions.getInstance().spellCheckLanguages_);
},

[Julius, 2015/07/06 22:38:53]

Done.

+
+  /** @override */
+  setUp: function() {
+    testing.Test.prototype.setUp.call(this);
+
+    assertTrue(loadTimeData.getBoolean('enableMultilingualSpellChecker'));
+    assertFalse(cr.isMac);
+    expectTrue($('spellcheck-language-button').hidden);
+
+    // Make sure the only language currently selected is 'fr'.
+    var langOpts = LanguageOptions.getInstance();
+    var langs = Object.keys(langOpts.spellCheckLanguages_);

[Dan Beam, 2015/06/25 02:44:27]

make your variables as verbose as possible without adding more lines, IMO

for example, this could be selectedLanguages or languages without adding more
lines, as far as I can tell.  apply to everything here (e.g. opts, reg, maybe
not "prefs")

[Julius, 2015/07/06 22:38:53]

Done.

+    expectEquals(1, langs.length);
+    expectEquals('fr', langs[0]);
+  },
+};
+
+// Test opening language options has correct location.
+TEST_F('MultilanguageOptionsWebUIBrowserTest', 'TestOpenLanguageOptions',
+       function() {
+  expectEquals('chrome://settings-frame/languages', document.location.href);
+});
+
+// Verify that the option to enable the spelling service is hidden when
+// multilingual spellchecking is enabled.
+TEST_F('MultilanguageOptionsWebUIBrowserTest', 'HideSpellingServiceCheckbox',
+       function() {
+  assertTrue(loadTimeData.getBoolean('enableMultilingualSpellChecker'));
+  expectTrue($('spelling-enabled-container').hidden);
+  testDone();
+});
+
+// Test that only certain languages can be selected and used for spellchecking.
+// prefs::kLanguagePreferredLanguages/prefs::kAcceptLanguages is set to
+// "fr,es,de,en" for the test.
+TEST_F('MultilanguageOptionsWebUIBrowserTest', 'ChangeSpellcheckLanguages',
+       function() {
+  var langOpts = LanguageOptions.getInstance();
+  var langs = Object.keys(langOpts.spellCheckLanguages_);
+
+  // Make sure 'es' exists in the language list and is unchecked.
+  expectTrue($('language-options-list').selectLanguageByCode('es'));
+  LanguageOptions.updateSpellCheckLanguageControls('es');
+  expectFalse($('spellcheck-language-checkbox').checked, 'es');
+
+  // Click 'es' and ensure that its checkbox gets checked.
+  $('spellcheck-language-checkbox').click();
+  expectTrue($('spellcheck-language-checkbox').checked, 'es');
+
+  // Make sure 'fr' stays checked.
+  $('language-options-list').selectLanguageByCode('fr');
+  LanguageOptions.updateSpellCheckLanguageControls('fr');
+  expectTrue($('spellcheck-language-checkbox').checked);
+
+  // Make sure 'fr' and 'es' are the only two languages being spellchecked with.
+  langs = Object.keys(langOpts.spellCheckLanguages_);
+  expectEquals(2, langs.length);
+  expectEquals('fr', langs[0]);
+  expectEquals('es', langs[1]);
+
+  // Make sure 'fr' exists in the language list and is checked.
+  expectTrue($('language-options-list').selectLanguageByCode('fr'));
+  LanguageOptions.updateSpellCheckLanguageControls('fr');
+  expectTrue($('spellcheck-language-checkbox').checked);
+
+  // Click 'fr' and ensure that its checkbox gets unchecked.
+  $('spellcheck-language-checkbox').click();
+  expectFalse($('spellcheck-language-checkbox').checked);
+
+  // Make sure 'es' stays checked.
+  $('language-options-list').selectLanguageByCode('es');
+  LanguageOptions.updateSpellCheckLanguageControls('es');
+  expectTrue($('spellcheck-language-checkbox').checked);
+
+  // Make sure es' is the only language being spellchecked with.
+  langs = Object.keys(langOpts.spellCheckLanguages_);
+  expectEquals(1, langs.length);
+  expectEquals('es', langs[0]);
+});
+
+// Make sure 'am' cannot be selected as a language and 'fr' stays selected.
+TEST_F('MultilanguageOptionsWebUIBrowserTest', 'NotAcceptLanguage',
+       function() {
+  var langOpts = LanguageOptions.getInstance();
+  var langs = Object.keys(langOpts.spellCheckLanguages_);
+
+  // Try to select 'am' from the language list.
+  expectFalse($('language-options-list').selectLanguageByCode('am'));
+
+  // Make sure 'fr' is still the only thing selected.
+  $('language-options-list').selectLanguageByCode('fr');
+  expectTrue($('spellcheck-language-checkbox').checked);
+  expectEquals(1, langs.length);
+  expectEquals('fr', langs[0]);
+});
+
+// Make sure 'en' cannot be selected as a language and 'fr' stays selected.
+TEST_F('MultilanguageOptionsWebUIBrowserTest', 'UnusableLanguage',
+       function() {
+  var langOpts = LanguageOptions.getInstance();
+  var langs = Object.keys(langOpts.spellCheckLanguages_);
+
+  // Try to select 'en' from the language list.
+  expectTrue($('language-options-list').selectLanguageByCode('en'));
+  LanguageOptions.updateSpellCheckLanguageControls('en');
+  expectTrue($('spellcheck-language-checkbox-container').hidden);
+  expectFalse($('spellcheck-language-checkbox').checked);
+
+  // Make sure 'fr' is still the only thing selected.
+  expectEquals(1, langs.length);
+  expectEquals('fr', langs[0]);
+});
+

[Dan Beam, 2015/06/25 02:44:27]

/** @constructor @extends {...} */ like above

[Julius, 2015/07/06 22:38:53]

Deleted this.

+function MultilanguagePreferenceWebUIBrowserTest() {}
+
+/**
+ * Wait for the method specified by |methodName|, on the |object| object, to be
+ * called, then execute |afterFunction|.
+ * @param {*} object Object with callable property named |methodName|.
+ * @param {string} methodName The name of the property on |object| to use as a
+ *     callback.
+ * @param {!Function} afterFunction A function to call after object.methodName()
+ *     is called.
+ */
+function waitForResponse(object, methodName, afterFunction) {
+  var originalCallback = object[methodName];
+
+  // Install a wrapper that temporarily replaces the original function.
+  object[methodName] = function() {
+    object[methodName] = originalCallback;
+    originalCallback.apply(this, arguments);
+    afterFunction();
+  };
+}

[Dan Beam, 2015/06/25 02:44:28]

why is this in the middle of MultilanguagePreferenceWebUIBrowserTest and
MultilanguagePreferenceWebUIBrowserTest.prototype?

[Julius, 2015/07/06 22:38:53]

Deleted this.

+
+MultilanguagePreferenceWebUIBrowserTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /**
+   * Browse to the language options page & call our preLoad().
+   */
+  browsePreload: 'chrome://settings-frame/languages',
+
+  /** @override */
+  typedefCppFixture: 'MultilanguageOptionsWebUIBrowserTest',
+

[Dan Beam, 2015/06/25 02:44:27]

/** @override */

[Julius, 2015/07/06 22:38:53]

Done.

+  testGenPreamble: function() {
+    GEN('SetBlankDictionariesPref();');
+  },
+
+  /** @override */
+  accessibilityIssuesAreErrors: true,
+
+  isAsync: true,
+
+  /** @override */
+  setUp: function() {
+    testing.Test.prototype.setUp.call(this);
+
+    assertTrue(loadTimeData.getBoolean('enableMultilingualSpellChecker'));
+    assertFalse(cr.isMac);
+    expectTrue($('spellcheck-language-button').hidden);

[Dan Beam, 2015/06/25 02:44:27]

this class looks pretty similar to MultilanguageOptionsWebUIBrowserTest

though I don't often encourage concrete inheritance, you could probably save
some code in this case

[Julius, 2015/07/06 22:38:54]

Done.

+
+    // Make sure no language is currently selected.
+    var langOpts = LanguageOptions.getInstance();
+    var langs = Object.keys(langOpts.spellCheckLanguages_);
+    var regPrefs = options.Preferences.getInstance().registeredPreferences_;
+    expectEquals(0, langs.length);
+    expectEquals('', regPrefs['spellcheck.dictionaries'].orig.value);
+  },
+};
+
+// Make sure the case where no languages are selected is handled properly.
+TEST_F('MultilanguagePreferenceWebUIBrowserTest', 'BlankSpellcheckLanguges',
+       function() {
+  var langOpts = LanguageOptions.getInstance();
+  var langs = Object.keys(langOpts.spellCheckLanguages_);
+  var regPrefs = options.Preferences.getInstance().registeredPreferences_;
+
+  // We are starting with a blank preference.
+  expectEquals(0, langs.length);
+  expectEquals('', regPrefs['spellcheck.dictionaries'].orig.value);
+
+  // Make sure 'fr' is not already checked.
+  expectTrue($('language-options-list').selectLanguageByCode('fr'));
+  LanguageOptions.updateSpellCheckLanguageControls('fr');
+  expectFalse($('spellcheck-language-checkbox').checked);
+
+  // Click 'fr' and ensure that the preference is updated correctly and that
+  // 'fr' is the only thing in the dictionary object.
+  $('spellcheck-language-checkbox').click();
+  waitForResponse(langOpts, 'updateSpellCheckLanguageControls_',

[Dan Beam, 2015/06/25 02:44:28]

I don't suppose you could just do:

  options.Preferences.getInstance().addEventListener('pref', function() {
    // things will already be updated because other listeners were subscribed
    // earlier and already ran
    testDone();
  });

instead of the waitForResponse() stuff you're copying from
options_browsertest.js?

[Julius, 2015/07/06 22:38:53]

Done.

+      function() {
+    expectTrue($('spellcheck-language-checkbox').checked);
+    expectEquals('fr', regPrefs['spellcheck.dictionaries'].orig.value);
+
+    langs = Object.keys(langOpts.spellCheckLanguages_);
+    expectEquals(1, langs.length);
+    expectEquals('fr', langs[0]);
+    testDone();
+  });
+});