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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/message_loop/message_loop.h"
      6 #include "base/prefs/pref_service.h"
      7 #include "base/strings/stringprintf.h"
      8 #include "base/task_runner.h"
      9 #include "chrome/browser/browser_process.h"
     10 #include "chrome/browser/chrome_notification_types.h"
     11 #include "chrome/browser/chromeos/customization_document.h"
     12 #include "chrome/browser/chromeos/input_method/input_method_util.h"
     13 #include "chrome/browser/chromeos/login/login_wizard.h"
     14 #include "chrome/browser/chromeos/login/test/js_checker.h"
     15 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
     16 #include "chrome/common/pref_names.h"
     17 #include "chrome/test/base/in_process_browser_test.h"
     18 #include "chromeos/ime/extension_ime_util.h"
     19 #include "chromeos/ime/input_method_manager.h"
     20 #include "chromeos/ime/input_method_whitelist.h"
     21 #include "chromeos/system/statistics_provider.h"
     22 #include "content/public/browser/notification_service.h"
     23 #include "content/public/browser/web_contents.h"
     24 #include "content/public/test/browser_test_utils.h"
     25 #include "content/public/test/test_utils.h"
     26 
     27 namespace base {
     28 class TaskRunner;
     29 }
     30 
     31 namespace chromeos {
     32 
     33 namespace {
     34 
     35 // OOBE constants.
     36 const char* kLocaleSelect = "language-select";
     37 const char* kKeyboardSelect = "keyboard-select";
     38 
     39 const char* kUSLayout = "xkb:us::eng";
     40 
     41 }
     42 
     43 namespace system {
     44 
     45 // Custom StatisticsProvider that will return each set of region settings.
     46 class FakeStatisticsProvider : public StatisticsProvider {
     47  public:
     48   virtual ~FakeStatisticsProvider() {}
     49 
     50   void set_locale(const std::string& locale) {
     51     initial_locale_ = locale;
     52   }
     53 
     54   void set_keyboard_layout(const std::string& keyboard_layout) {
     55     keyboard_layout_ = keyboard_layout;
     56   }
     57 
     58  private:
     59   // StatisticsProvider overrides.
     60   virtual void StartLoadingMachineStatistics(
     61       const scoped_refptr<base::TaskRunner>& file_task_runner,
     62       bool load_oem_manifest) OVERRIDE {
     63   }
     64 
     65   // Populates the named machine statistic for initial_locale and
     66   // keyboard_layout only.
     67   virtual bool GetMachineStatistic(const std::string& name,
     68                                    std::string* result) OVERRIDE {
     69     if (name == "initial_locale")
     70       *result = initial_locale_;
     71     else if (name == "keyboard_layout")
     72       *result = keyboard_layout_;
     73     else
     74       return false;
     75 
     76     return true;
     77   }
     78 
     79   virtual bool GetMachineFlag(const std::string& name, bool* result) OVERRIDE {
     80     return false;
     81   }
     82 
     83   virtual void Shutdown() OVERRIDE {
     84   }
     85 
     86   std::string initial_locale_;
     87   std::string keyboard_layout_;
     88 };
     89 
     90 }  // namespace system
     91 
     92 class OobeLocalizationTest : public InProcessBrowserTest {
     93  public:
     94   OobeLocalizationTest();
     95   virtual ~OobeLocalizationTest();
     96 
     97   // Verifies that the comma-separated |values| corresponds with the first
     98   // values in |select_id|, optionally checking for an options group label after
     99   // the first set of options.
    100   bool VerifyInitialOptions(const char* select_id,
    101                             const char* values,
    102                             bool check_separator);
    103 
    104   // Verifies that |value| exists in |select_id|.
    105   bool VerifyOptionExists(const char* select_id, const char* value);
    106 
    107   // Dumps OOBE select control (language or keyboard) to string.
    108   std::string DumpOptions(const char* select_id);
    109 
    110  protected:
    111   // Runs the test for the given locale and keyboard layout.
    112   void RunLocalizationTest(const std::string& initial_locale,
    113                            const std::string& keyboard_layout,
    114                            const std::string& expected_locale,
    115                            const std::string& expected_keyboard_layout,
    116                            const std::string& expected_keyboard_select_control);
    117 
    118  private:
    119   scoped_ptr<system::FakeStatisticsProvider> statistics_provider_;
    120   test::JSChecker checker;
    121 
    122   DISALLOW_COPY_AND_ASSIGN(OobeLocalizationTest);
    123 };
    124 
    125 OobeLocalizationTest::OobeLocalizationTest() {
    126   statistics_provider_.reset(new system::FakeStatisticsProvider());
    127   // Set the instance returned by GetInstance() for testing.
    128   system::StatisticsProvider::SetTestProvider(statistics_provider_.get());
    129 }
    130 
    131 OobeLocalizationTest::~OobeLocalizationTest() {
    132   system::StatisticsProvider::SetTestProvider(NULL);
    133 }
    134 
    135 bool OobeLocalizationTest::VerifyInitialOptions(const char* select_id,
    136                                                 const char* values,
    137                                                 bool check_separator) {
    138   const std::string expression = base::StringPrintf(
    139       "(function () {\n"
    140       "  var select = document.querySelector('#%s');\n"
    141       "  if (!select)\n"
    142       "    return false;\n"
    143       "  var values = '%s'.split(',');\n"
    144       "  var correct = select.selectedIndex == 0;\n"
    145       "  for (var i = 0; i < values.length && correct; i++) {\n"
    146       "    if (select.options[i].value != values[i])\n"
    147       "      correct = false;\n"
    148       "  }\n"
    149       "  if (%d && correct)\n"
    150       "    correct = select.children[values.length].tagName === 'OPTGROUP';\n"
    151       "  return correct;\n"
    152       "})()", select_id, values, check_separator);
    153   const bool execute_status = checker.GetBool(expression);
    154   EXPECT_TRUE(execute_status) << expression;
    155   return execute_status;
    156 }
    157 
    158 bool OobeLocalizationTest::VerifyOptionExists(const char* select_id,
    159                                               const char* value) {
    160   const std::string expression = base::StringPrintf(
    161       "(function () {\n"
    162       "  var select = document.querySelector('#%s');\n"
    163       "  if (!select)\n"
    164       "    return false;\n"
    165       "  for (var i = 0; i < select.options.length; i++) {\n"
    166       "    if (select.options[i].value == '%s')\n"
    167       "      return true;\n"
    168       "  }\n"
    169       "  return false;\n"
    170       "})()", select_id, value);
    171   const bool execute_status = checker.GetBool(expression);
    172   EXPECT_TRUE(execute_status) << expression;
    173   return execute_status;
    174 }
    175 
    176 std::string OobeLocalizationTest::DumpOptions(const char* select_id) {
    177   const std::string expression = base::StringPrintf(
    178       "\n"
    179       "(function () {\n"
    180       "  var selector = '#%s';\n"
    181       "  var divider = ',';\n"
    182       "  var select = document.querySelector(selector);\n"
    183       "  if (!select)\n"
    184       "    return 'document.querySelector(' + selector + ') failed.';\n"
    185       "  var dumpOptgroup = function(group) {\n"
    186       "    var result = '';\n"
    187       "    for (var i = 0; i < group.children.length; i++) {\n"
    188       "      if (i > 0) {\n"
    189       "        result += divider;\n"
    190       "      }\n"
    191       "      if (group.children[i].value) {\n"
    192       "        result += group.children[i].value;\n"
    193       "      } else {\n"
    194       "        result += '__NO_VALUE__';\n"
    195       "      }\n"
    196       "    }\n"
    197       "    return result;\n"
    198       "  };\n"
    199       "  var result = '';\n"
    200       "  if (select.selectedIndex != 0) {\n"
    201       "    result += '(selectedIndex=' + select.selectedIndex + \n"
    202       "        ', selected \"' + select.options[select.selectedIndex].value +\n"
    203       "        '\")';\n"
    204       "  }\n"
    205       "  var children = select.children;\n"
    206       "  for (var i = 0; i < children.length; i++) {\n"
    207       "    if (i > 0) {\n"
    208       "      result += divider;\n"
    209       "    }\n"
    210       "    if (children[i].value) {\n"
    211       "      result += children[i].value;\n"
    212       "    } else if (children[i].tagName === 'OPTGROUP') {\n"
    213       "      result += '[' + dumpOptgroup(children[i]) + ']';\n"
    214       "    } else {\n"
    215       "      result += '__NO_VALUE__';\n"
    216       "    }\n"
    217       "  }\n"
    218       "  return result;\n"
    219       "})()\n",
    220       select_id);
    221   return checker.GetString(expression);
    222 }
    223 
    224 std::string TranslateXKB2Extension(const std::string& src) {
    225   std::string result(src);
    226   // Modifies the expected keyboard select control options for the new
    227   // extension based xkb id.
    228   size_t pos = 0;
    229   std::string repl_old = "xkb:";
    230   std::string repl_new =
    231       extension_ime_util::GetInputMethodIDByEngineID("xkb:");
    232   while ((pos = result.find(repl_old, pos)) != std::string::npos) {
    233     result.replace(pos, repl_old.length(), repl_new);
    234     pos += repl_new.length();
    235   }
    236   return result;
    237 }
    238 
    239 void OobeLocalizationTest::RunLocalizationTest(
    240     const std::string& initial_locale,
    241     const std::string& keyboard_layout,
    242     const std::string& expected_locale,
    243     const std::string& expected_keyboard_layout,
    244     const std::string& expected_keyboard_select_control) {
    245   statistics_provider_->set_locale(initial_locale);
    246   statistics_provider_->set_keyboard_layout(keyboard_layout);
    247 
    248   // Initialize StartupCustomizationDocument with fake statistics provider.
    249   StartupCustomizationDocument::GetInstance()->Init(
    250       statistics_provider_.get());
    251 
    252   g_browser_process->local_state()->SetString(
    253       prefs::kHardwareKeyboardLayout, keyboard_layout);
    254 
    255   input_method::InputMethodManager::Get()
    256       ->GetInputMethodUtil()
    257       ->InitXkbInputMethodsForTesting();
    258 
    259   const std::string expected_keyboard_select =
    260       TranslateXKB2Extension(expected_keyboard_select_control);
    261 
    262   // Bring up the OOBE network screen.
    263   chromeos::ShowLoginWizard(chromeos::WizardController::kNetworkScreenName);
    264   content::WindowedNotificationObserver(
    265       chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE,
    266       content::NotificationService::AllSources()).Wait();
    267 
    268   checker.set_web_contents(static_cast<chromeos::LoginDisplayHostImpl*>(
    269                            chromeos::LoginDisplayHostImpl::default_host())->
    270                            GetOobeUI()->web_ui()->GetWebContents());
    271 
    272   if (!VerifyInitialOptions(kLocaleSelect, expected_locale.c_str(), true)) {
    273     LOG(ERROR) << "Actual value of " << kLocaleSelect << ":\n"
    274                << DumpOptions(kLocaleSelect);
    275   }
    276   if (!VerifyInitialOptions(
    277           kKeyboardSelect,
    278           TranslateXKB2Extension(expected_keyboard_layout).c_str(),
    279           false)) {
    280     LOG(ERROR) << "Actual value of " << kKeyboardSelect << ":\n"
    281                << DumpOptions(kKeyboardSelect);
    282   }
    283 
    284   // Make sure we have a fallback keyboard.
    285   if (!VerifyOptionExists(kKeyboardSelect,
    286                           extension_ime_util::GetInputMethodIDByEngineID(
    287                               kUSLayout).c_str())) {
    288     LOG(ERROR) << "Actual value of " << kKeyboardSelect << ":\n"
    289                << DumpOptions(kKeyboardSelect);
    290   }
    291 
    292   // Note, that sort order is locale-specific, but is unlikely to change.
    293   // Especially for keyboard layouts.
    294   EXPECT_EQ(expected_keyboard_select, DumpOptions(kKeyboardSelect));
    295 
    296   // Shut down the display host.
    297   chromeos::LoginDisplayHostImpl::default_host()->Finalize();
    298   base::MessageLoopForUI::current()->RunUntilIdle();
    299 
    300   // Clear the locale pref so the statistics provider is pinged next time.
    301   g_browser_process->local_state()->SetString(prefs::kApplicationLocale,
    302                                               std::string());
    303 }
    304 
    305 IN_PROC_BROWSER_TEST_F(OobeLocalizationTest, NetworkScreenNonLatin) {
    306   // For a non-Latin keyboard layout like Russian, we expect to see the US
    307   // keyboard.
    308   RunLocalizationTest("ru", "xkb:ru::rus",
    309                       "ru", kUSLayout,
    310                       "xkb:us::eng");
    311 
    312   RunLocalizationTest("ru", "xkb:us::eng,xkb:ru::rus",
    313                       "ru", kUSLayout,
    314                       "xkb:us::eng");
    315 
    316   // IMEs do not load at OOBE, so we just expect to see the (Latin) Japanese
    317   // keyboard.
    318   RunLocalizationTest("ja", "xkb:jp::jpn",
    319                       "ja", "xkb:jp::jpn",
    320                       "xkb:jp::jpn,[xkb:us::eng]");
    321 }
    322 
    323 IN_PROC_BROWSER_TEST_F(OobeLocalizationTest, NetworkScreenKeyboardLayout) {
    324   // We don't use the Icelandic locale but the Icelandic keyboard layout
    325   // should still be selected when specified as the default.
    326   RunLocalizationTest("en-US", "xkb:is::ice",
    327                       "en-US", "xkb:is::ice",
    328                       "xkb:is::ice,["
    329                           "xkb:us::eng,xkb:us:intl:eng,xkb:us:altgr-intl:eng,"
    330                           "xkb:us:dvorak:eng,xkb:us:colemak:eng]");
    331 }
    332 
    333 IN_PROC_BROWSER_TEST_F(OobeLocalizationTest, NetworkScreenFullLatin) {
    334   // French Swiss keyboard.
    335   RunLocalizationTest("fr", "xkb:ch:fr:fra",
    336                       "fr", "xkb:ch:fr:fra",
    337                       "xkb:ch:fr:fra,["
    338                           "xkb:fr::fra,xkb:be::fra,xkb:ca::fra,"
    339                           "xkb:ca:multix:fra,xkb:us::eng]");
    340 
    341   // German Swiss keyboard.
    342   RunLocalizationTest("de", "xkb:ch::ger",
    343                       "de", "xkb:ch::ger",
    344                       "xkb:ch::ger,["
    345                           "xkb:de::ger,xkb:de:neo:ger,xkb:be::ger,xkb:us::eng"
    346                       "]");
    347 }
    348 
    349 IN_PROC_BROWSER_TEST_F(OobeLocalizationTest, NetworkScreenMultipleLocales) {
    350   RunLocalizationTest("es,en-US,nl", "xkb:be::nld",
    351                       "es,en-US,nl", "xkb:be::nld",
    352                       "xkb:be::nld,[xkb:es::spa,xkb:latam::spa,xkb:us::eng]");
    353 
    354   RunLocalizationTest("ru,de", "xkb:ru::rus",
    355                       "ru,de", kUSLayout,
    356                       "xkb:us::eng");
    357 }
    358 
    359 IN_PROC_BROWSER_TEST_F(OobeLocalizationTest, NetworkScreenRegionalLocales) {
    360   // Syntetic example to test correct merging of different locales.
    361   RunLocalizationTest("fr-CH,it-CH,de-CH",
    362                       "xkb:fr::fra,xkb:it::ita,xkb:de::ger",
    363                       "fr-CH,it-CH,de-CH",
    364                       "xkb:fr::fra",
    365                       "xkb:fr::fra,xkb:it::ita,xkb:de::ger,["
    366                           "xkb:be::fra,xkb:ca::fra,xkb:ch:fr:fra,"
    367                           "xkb:ca:multix:fra,xkb:us::eng"
    368                       "]");
    369   // Another syntetic example. Check that british keyboard is available.
    370   RunLocalizationTest("en-AU",
    371                       "xkb:us::eng",
    372                       "en-AU",
    373                       "xkb:us::eng",
    374                       "xkb:us::eng,[xkb:gb:extd:eng,xkb:gb:dvorak:eng]");
    375 }
    376 
    377 }  // namespace chromeos
    378