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- // 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/case_conversion.h"
- #include "base/i18n/rtl.h"
- #include "base/strings/utf_string_conversions.h"
- #include "base/test/icu_test_util.h"
- #include "testing/gtest/include/gtest/gtest.h"
- #include "third_party/icu/source/i18n/unicode/usearch.h"
- namespace base {
- namespace i18n {
- namespace {
- const char16_t kNonASCIIMixed[] =
- u"\xC4\xD6\xE4\xF6\x20\xCF\xEF\x20\xF7\x25"
- u"\xA4\x23\x2A\x5E\x60\x40\xA3\x24\x2030\x201A\x7E\x20\x1F07\x1F0F"
- u"\x20\x1E00\x1E01";
- const char16_t kNonASCIILower[] =
- u"\xE4\xF6\xE4\xF6\x20\xEF\xEF"
- u"\x20\xF7\x25\xA4\x23\x2A\x5E\x60\x40\xA3\x24\x2030\x201A\x7E\x20\x1F07"
- u"\x1F07\x20\x1E01\x1E01";
- const char16_t kNonASCIIUpper[] =
- u"\xC4\xD6\xC4\xD6\x20\xCF\xCF"
- u"\x20\xF7\x25\xA4\x23\x2A\x5E\x60\x40\xA3\x24\x2030\x201A\x7E\x20\x1F0F"
- u"\x1F0F\x20\x1E00\x1E00";
- } // namespace
- // Test upper and lower case string conversion.
- TEST(CaseConversionTest, UpperLower) {
- const std::u16string mixed(u"Text with UPPer & lowER casE.");
- const std::u16string expected_lower(u"text with upper & lower case.");
- const std::u16string expected_upper(u"TEXT WITH UPPER & LOWER CASE.");
- std::u16string result = ToLower(mixed);
- EXPECT_EQ(expected_lower, result);
- result = ToUpper(mixed);
- EXPECT_EQ(expected_upper, result);
- }
- TEST(CaseConversionTest, NonASCII) {
- const std::u16string mixed(kNonASCIIMixed);
- const std::u16string expected_lower(kNonASCIILower);
- const std::u16string expected_upper(kNonASCIIUpper);
- std::u16string result = ToLower(mixed);
- EXPECT_EQ(expected_lower, result);
- result = ToUpper(mixed);
- EXPECT_EQ(expected_upper, result);
- }
- TEST(CaseConversionTest, TurkishLocaleConversion) {
- const std::u16string mixed(u"\x49\x131");
- const std::u16string expected_lower(u"\x69\x131");
- const std::u16string expected_upper(u"\x49\x49");
- test::ScopedRestoreICUDefaultLocale restore_locale;
- i18n::SetICUDefaultLocale("en_US");
- std::u16string result = ToLower(mixed);
- EXPECT_EQ(expected_lower, result);
- result = ToUpper(mixed);
- EXPECT_EQ(expected_upper, result);
- i18n::SetICUDefaultLocale("tr");
- const std::u16string expected_lower_turkish(u"\x131\x131");
- const std::u16string expected_upper_turkish(u"\x49\x49");
- result = ToLower(mixed);
- EXPECT_EQ(expected_lower_turkish, result);
- result = ToUpper(mixed);
- EXPECT_EQ(expected_upper_turkish, result);
- }
- TEST(CaseConversionTest, FoldCase) {
- // Simple ASCII, should lower-case.
- EXPECT_EQ(u"hello, world", FoldCase(u"Hello, World"));
- // Non-ASCII cases from above. They should all fold to the same result.
- EXPECT_EQ(FoldCase(kNonASCIIMixed), FoldCase(kNonASCIILower));
- EXPECT_EQ(FoldCase(kNonASCIIMixed), FoldCase(kNonASCIIUpper));
- // Turkish cases from above. This is the lower-case expected result from the
- // US locale. It should be the same even when the current locale is Turkish.
- const std::u16string turkish(u"\x49\x131");
- const std::u16string turkish_expected(u"\x69\x131");
- test::ScopedRestoreICUDefaultLocale restore_locale;
- i18n::SetICUDefaultLocale("en_US");
- EXPECT_EQ(turkish_expected, FoldCase(turkish));
- i18n::SetICUDefaultLocale("tr");
- EXPECT_EQ(turkish_expected, FoldCase(turkish));
- // Test a case that gets bigger when processed.
- // U+130 = LATIN CAPITAL LETTER I WITH DOT ABOVE gets folded to a lower case
- // "i" followed by U+307 COMBINING DOT ABOVE.
- EXPECT_EQ(u"i\u0307j", FoldCase(u"\u0130j"));
- // U+00DF (SHARP S) and U+1E9E (CAPIRAL SHARP S) are both folded to "ss".
- EXPECT_EQ(u"ssss", FoldCase(u"\u00DF\u1E9E"));
- }
- } // namespace i18n
- } // namespace base
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