Restore locales after tests

base/i18n/time_formatting_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "base/i18n/time_formatting.h"
 
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/icu/source/common/unicode/uversion.h"
 #include "third_party/icu/source/i18n/unicode/calendar.h"
 #include "third_party/icu/source/i18n/unicode/timezone.h"
 #include "third_party/icu/source/i18n/unicode/tzfmt.h"
 
 namespace base {
 namespace {
 
+class ScopedSetICUDefaultLocale {
+  std::string default_locale;
+
+ public:
+  ScopedSetICUDefaultLocale(std::string locale);
+  ~ScopedSetICUDefaultLocale();
+};
+
+ScopedSetICUDefaultLocale::ScopedSetICUDefaultLocale(std::string locale)
+    : default_locale(locale) {}
+
+ScopedSetICUDefaultLocale::~ScopedSetICUDefaultLocale() {
+  i18n::SetICUDefaultLocale(default_locale.data());
+}
+
 const Time::Exploded kTestDateTimeExploded = {
   2011, 4, 6, 30, // Sat, Apr 30, 2011
   15, 42, 7, 0    // 15:42:07.000
 };
 
 // Returns difference between the local time and GMT formatted as string.
 // This function gets |time| because the difference depends on time,
 // see https://en.wikipedia.org/wiki/Daylight_saving_time for details.
 base::string16 GetShortTimeZone(const Time& time) {
   UErrorCode status = U_ZERO_ERROR;
   scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
   scoped_ptr<icu::TimeZoneFormat> zone_formatter(
       icu::TimeZoneFormat::createInstance(icu::Locale::getDefault(), status));
   EXPECT_TRUE(U_SUCCESS(status));
   icu::UnicodeString name;
   zone_formatter->format(UTZFMT_STYLE_SPECIFIC_SHORT, *zone,
                          static_cast<UDate>(time.ToDoubleT() * 1000),
                          name, nullptr);
   return base::string16(name.getBuffer(), name.length());
 }
 
 TEST(TimeFormattingTest, TimeFormatTimeOfDayDefault12h) {
   // Test for a locale defaulted to 12h clock.
   // As an instance, we use third_party/icu/source/data/locales/en.txt.
+  ScopedSetICUDefaultLocale restore_object(uloc_getDefault());
   i18n::SetICUDefaultLocale("en_US");
 
   Time time(Time::FromLocalExploded(kTestDateTimeExploded));
   string16 clock24h(ASCIIToUTF16("15:42"));
   string16 clock12h_pm(ASCIIToUTF16("3:42 PM"));
   string16 clock12h(ASCIIToUTF16("3:42"));
   string16 clock24h_millis(ASCIIToUTF16("15:42:07.000"));
 
   // The default is 12h clock.
   EXPECT_EQ(clock12h_pm, TimeFormatTimeOfDay(time));
@@ skipping 15 matching lines @@
                                                  kKeepAmPm));
   EXPECT_EQ(clock12h,
             TimeFormatTimeOfDayWithHourClockType(time,
                                                  k12HourClock,
                                                  kDropAmPm));
 }
 
 TEST(TimeFormattingTest, TimeFormatTimeOfDayDefault24h) {
   // Test for a locale defaulted to 24h clock.
   // As an instance, we use third_party/icu/source/data/locales/en_GB.txt.
+  ScopedSetICUDefaultLocale restore_object(uloc_getDefault());
   i18n::SetICUDefaultLocale("en_GB");
 
   Time time(Time::FromLocalExploded(kTestDateTimeExploded));
   string16 clock24h(ASCIIToUTF16("15:42"));
   string16 clock12h_pm(ASCIIToUTF16("3:42 pm"));
   string16 clock12h(ASCIIToUTF16("3:42"));
   string16 clock24h_millis(ASCIIToUTF16("15:42:07.000"));
 
   // The default is 24h clock.
   EXPECT_EQ(clock24h, TimeFormatTimeOfDay(time));
@@ skipping 15 matching lines @@
                                                  kKeepAmPm));
   EXPECT_EQ(clock12h,
             TimeFormatTimeOfDayWithHourClockType(time,
                                                  k12HourClock,
                                                  kDropAmPm));
 }
 
 TEST(TimeFormattingTest, TimeFormatTimeOfDayJP) {
   // Test for a locale that uses different mark than "AM" and "PM".
   // As an instance, we use third_party/icu/source/data/locales/ja.txt.
+  ScopedSetICUDefaultLocale restore_object(uloc_getDefault());
   i18n::SetICUDefaultLocale("ja_JP");
 
   Time time(Time::FromLocalExploded(kTestDateTimeExploded));
   string16 clock24h(ASCIIToUTF16("15:42"));
   string16 clock12h_pm(WideToUTF16(L"\x5348\x5f8c" L"3:42"));
   string16 clock12h(ASCIIToUTF16("3:42"));
 
   // The default is 24h clock.
   EXPECT_EQ(clock24h, TimeFormatTimeOfDay(time));
   EXPECT_EQ(k24HourClock, GetHourClockType());
@@ skipping 13 matching lines @@
                                                  kKeepAmPm));
   EXPECT_EQ(clock12h,
             TimeFormatTimeOfDayWithHourClockType(time,
                                                  k12HourClock,
                                                  kDropAmPm));
 }
 
 TEST(TimeFormattingTest, TimeFormatDateUS) {
   // See third_party/icu/source/data/locales/en.txt.
   // The date patterns are "EEEE, MMMM d, y", "MMM d, y", and "M/d/yy".
+  ScopedSetICUDefaultLocale restore_object(uloc_getDefault());
   i18n::SetICUDefaultLocale("en_US");
 
   Time time(Time::FromLocalExploded(kTestDateTimeExploded));
 
   EXPECT_EQ(ASCIIToUTF16("Apr 30, 2011"), TimeFormatShortDate(time));
   EXPECT_EQ(ASCIIToUTF16("4/30/11"), TimeFormatShortDateNumeric(time));
 
   EXPECT_EQ(ASCIIToUTF16("4/30/11, 3:42:07 PM"),
             TimeFormatShortDateAndTime(time));
   EXPECT_EQ(ASCIIToUTF16("4/30/11, 3:42:07 PM ") + GetShortTimeZone(time),
             TimeFormatShortDateAndTimeWithTimeZone(time));
 
   EXPECT_EQ(ASCIIToUTF16("Saturday, April 30, 2011 at 3:42:07 PM"),
             TimeFormatFriendlyDateAndTime(time));
 
   EXPECT_EQ(ASCIIToUTF16("Saturday, April 30, 2011"),
             TimeFormatFriendlyDate(time));
 }
 
 TEST(TimeFormattingTest, TimeFormatDateGB) {
   // See third_party/icu/source/data/locales/en_GB.txt.
   // The date patterns are "EEEE, d MMMM y", "d MMM y", and "dd/MM/yyyy".
+  ScopedSetICUDefaultLocale restore_object(uloc_getDefault());
   i18n::SetICUDefaultLocale("en_GB");
 
   Time time(Time::FromLocalExploded(kTestDateTimeExploded));
 
   EXPECT_EQ(ASCIIToUTF16("30 Apr 2011"), TimeFormatShortDate(time));
   EXPECT_EQ(ASCIIToUTF16("30/04/2011"), TimeFormatShortDateNumeric(time));
   EXPECT_EQ(ASCIIToUTF16("30/04/2011, 15:42:07"),
             TimeFormatShortDateAndTime(time));
   EXPECT_EQ(ASCIIToUTF16("30/04/2011, 15:42:07 ") + GetShortTimeZone(time),
             TimeFormatShortDateAndTimeWithTimeZone(time));
   EXPECT_EQ(ASCIIToUTF16("Saturday, 30 April 2011 at 15:42:07"),
             TimeFormatFriendlyDateAndTime(time));
   EXPECT_EQ(ASCIIToUTF16("Saturday, 30 April 2011"),
             TimeFormatFriendlyDate(time));
 }
 
 }  // namespace
 }  // namespace base