Fix ChromeOS clock menu so that it can show 12-hour clock in all locales.

base/i18n/time_formatting_unittest.cc

Index: base/i18n/time_formatting_unittest.cc
diff --git a/base/i18n/time_formatting_unittest.cc b/base/i18n/time_formatting_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eab12d9f55d2f64d63f6e2460061522ff0e22694
--- /dev/null
+++ b/base/i18n/time_formatting_unittest.cc
@@ -0,0 +1,167 @@
+// 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/time.h"
+#include "base/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "unicode/locid.h"
+
+namespace {
+
+void SetICUDefaultLocale(const std::string& locale_string) {
+  icu::Locale locale(locale_string.c_str());
+  UErrorCode error_code = U_ZERO_ERROR;
+  icu::Locale::setDefault(locale, error_code);
+  EXPECT_TRUE(U_SUCCESS(error_code));
+}
+
+const base::Time::Exploded kTestDateTimeExploded = {
+  2011, 4, 6, 30, // Sat, Apr 30, 2011
+  15, 42, 7, 0    // 15:42:07.000
+};
+
+}  // namespace
+
+TEST(TimeFormattingTest, TimeFormatTimeOfDayDefault12h) {
+  // Test for a locale defaulted to 12h clock.
+  // As an instance, we use third_party/icu/source/data/locales/en.txt.
+  SetICUDefaultLocale("en_US");
+
+  base::Time time(base::Time::FromLocalExploded(kTestDateTimeExploded));
+  string16 clock24h(ASCIIToUTF16("15:42"));
+  string16 clock12h_pm(ASCIIToUTF16("3:42 PM"));
+  string16 clock12h(ASCIIToUTF16("3:42"));
+
+  // The default is 12h clock.
+  EXPECT_EQ(clock12h_pm,
+            base::TimeFormatTimeOfDay(time));
+  EXPECT_EQ(base::k12HourClock, base::GetHourClockType());
+  // k{Keep,Drop}AmPm should not affect for 24h clock.
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kDropAmPm));
+  // k{Keep,Drop}AmPm affects for 12h clock.
+  EXPECT_EQ(clock12h_pm,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock12h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::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.
+  SetICUDefaultLocale("en_GB");
+
+  base::Time time(base::Time::FromLocalExploded(kTestDateTimeExploded));
+  string16 clock24h(ASCIIToUTF16("15:42"));
+  string16 clock12h_pm(ASCIIToUTF16("3:42 PM"));
+  string16 clock12h(ASCIIToUTF16("3:42"));
+
+  // The default is 24h clock.
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDay(time));
+  EXPECT_EQ(base::k24HourClock, base::GetHourClockType());
+  // k{Keep,Drop}AmPm should not affect for 24h clock.
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kDropAmPm));
+  // k{Keep,Drop}AmPm affects for 12h clock.
+  EXPECT_EQ(clock12h_pm,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock12h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::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.
+  SetICUDefaultLocale("ja_JP");
+
+  base::Time time(base::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,
+            base::TimeFormatTimeOfDay(time));
+  EXPECT_EQ(base::k24HourClock, base::GetHourClockType());
+  // k{Keep,Drop}AmPm should not affect for 24h clock.
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock24h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k24HourClock,
+                                                       base::kDropAmPm));
+  // k{Keep,Drop}AmPm affects for 12h clock.
+  EXPECT_EQ(clock12h_pm,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::kKeepAmPm));
+  EXPECT_EQ(clock12h,
+            base::TimeFormatTimeOfDayWithHourClockType(time,
+                                                       base::k12HourClock,
+                                                       base::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".
+  SetICUDefaultLocale("en_US");
+
+  base::Time time(base::Time::FromLocalExploded(kTestDateTimeExploded));
+
+  EXPECT_EQ(ASCIIToUTF16("Apr 30, 2011"),
+            base::TimeFormatShortDate(time));
+  EXPECT_EQ(ASCIIToUTF16("4/30/11"),
+            base::TimeFormatShortDateNumeric(time));
+  EXPECT_EQ(ASCIIToUTF16("4/30/11 3:42:07 PM"),
+            base::TimeFormatShortDateAndTime(time));
+  EXPECT_EQ(ASCIIToUTF16("Saturday, April 30, 2011 3:42:07 PM"),
+            base::TimeFormatFriendlyDateAndTime(time));
+  EXPECT_EQ(ASCIIToUTF16("Saturday, April 30, 2011"),
+            base::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".
+  SetICUDefaultLocale("en_GB");
+
+  base::Time time(base::Time::FromLocalExploded(kTestDateTimeExploded));
+
+  EXPECT_EQ(ASCIIToUTF16("30 Apr 2011"),
+            base::TimeFormatShortDate(time));
+  EXPECT_EQ(ASCIIToUTF16("30/04/2011"),
+            base::TimeFormatShortDateNumeric(time));
+  EXPECT_EQ(ASCIIToUTF16("30/04/2011 15:42:07"),
+            base::TimeFormatShortDateAndTime(time));
+  EXPECT_EQ(ASCIIToUTF16("Saturday, 30 April 2011 15:42:07"),
+            base::TimeFormatFriendlyDateAndTime(time));
+  EXPECT_EQ(ASCIIToUTF16("Saturday, 30 April 2011"),
+            base::TimeFormatFriendlyDate(time));
+}