chrome/browser/locale_tests_browsertest.cc

   1 // Copyright (c) 2012 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/command_line.h"
   6 #include "base/environment.h"
   7 #include "build/build_config.h"
   8 #include "chrome/test/base/in_process_browser_test.h"
   9 #include "ui/base/ui_base_switches.h"
  10
  11 namespace {
  12
  13 // A class that over-writes the system locale only in a scope. To emulate the
  14 // specified environment on Linux, this class over-writes a LC_ALL environment
  15 // variable when creating a LocaleTest object and restore it with the original
  16 // value when deleting the object. (This environment variable may affect other
  17 // tests and we have to restore it regardless of the results of LocaleTests.)
  18 class ScopedLocale {
  19  public:
  20   explicit ScopedLocale(const char* locale) : locale_(locale) {
  21 #if defined(OS_LINUX)
  22     old_locale_ = getenv("LC_ALL");
  23
  24     static const struct {
  25       const char* chrome_locale;
  26       const char* system_locale;
  27     } kLocales[] = {
  28       { "da", "da_DK.UTF-8" },
  29       { "he", "he_IL.UTF-8" },
  30       { "zh-TW", "zh_TW.UTF-8" }
  31     };
  32     bool found_locale = false;
  33     for (size_t i = 0; i < arraysize(kLocales); ++i) {
  34       if (kLocales[i].chrome_locale == locale) {
  35         found_locale = true;
  36         setenv("LC_ALL", kLocales[i].system_locale, 1);
  37       }
  38     }
  39     DCHECK(found_locale);
  40 #endif
  41   }
  42
  43   ~ScopedLocale() {
  44 #if defined(OS_LINUX)
  45     scoped_ptr<base::Environment> env(base::Environment::Create());
  46     if (old_locale_) {
  47       env->SetVar("LC_ALL", old_locale_);
  48     } else {
  49       env->UnSetVar("LC_ALL");
  50     }
  51 #endif
  52   }
  53
  54   const std::string& locale() { return locale_; }
  55
  56  private:
  57   std::string locale_;
  58 #if defined(OS_LINUX)
  59   const char* old_locale_;
  60 #endif
  61 };
  62
  63 // A base class for tests used in this file. This class over-writes the system
  64 // locale and run Chrome with a '--lang' option. To add a new LocaleTest, add a
  65 // class derived from this class and call the constructor with the locale name
  66 // used by Chrome.
  67 class LocaleTestBase : public InProcessBrowserTest {
  68  public:
  69   explicit LocaleTestBase(const char* locale) : locale_(locale) {
  70   }
  71
  72   void SetUpCommandLine(base::CommandLine* command_line) override {
  73     command_line->AppendSwitchASCII(switches::kLang, locale_.locale());
  74   }
  75
  76  protected:
  77   ScopedLocale locale_;
  78 };
  79
  80 // Test classes that run Chrome on the Danish locale, the Hebrew locale, and
  81 // the Traditional-Chinese locale, respectively.
  82 class LocaleTestDanish : public LocaleTestBase {
  83  public:
  84   LocaleTestDanish() : LocaleTestBase("da") {
  85   }
  86 };
  87
  88 class LocaleTestHebrew : public LocaleTestBase {
  89  public:
  90   LocaleTestHebrew() : LocaleTestBase("he") {
  91   }
  92 };
  93
  94 class LocaleTestTraditionalChinese : public LocaleTestBase {
  95  public:
  96   LocaleTestTraditionalChinese() : LocaleTestBase("zh-TW") {
  97   }
  98 };
  99
 100 }  // namespace
 101
 102 // Start Chrome and shut it down on the Danish locale, the Hebrew locale, and
 103 // the Traditional-Chinese locale, respectively. These tests do not need any
 104 // code here because they just verify we can start Chrome and shut it down
 105 // cleanly on these locales.
 106 IN_PROC_BROWSER_TEST_F(LocaleTestDanish, TestStart) {
 107 }
 108
 109 IN_PROC_BROWSER_TEST_F(LocaleTestHebrew, TestStart) {
 110 }
 111
 112 IN_PROC_BROWSER_TEST_F(LocaleTestTraditionalChinese, TestStart) {
 113 }