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-rw-r--r--intl/components/gtest/TestString.cpp261
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diff --git a/intl/components/gtest/TestString.cpp b/intl/components/gtest/TestString.cpp
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+++ b/intl/components/gtest/TestString.cpp
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "gtest/gtest.h"
+
+#include "mozilla/intl/String.h"
+#include "mozilla/Span.h"
+#include "mozilla/TextUtils.h"
+#include "mozilla/Try.h"
+
+#include <algorithm>
+
+#include "TestBuffer.h"
+
+namespace mozilla::intl {
+
+static Result<std::u16string_view, ICUError> ToLocaleLowerCase(
+ const char* aLocale, const char16_t* aString,
+ TestBuffer<char16_t>& aBuffer) {
+ aBuffer.clear();
+
+ MOZ_TRY(String::ToLocaleLowerCase(aLocale, MakeStringSpan(aString), aBuffer));
+
+ return aBuffer.get_string_view();
+}
+
+static Result<std::u16string_view, ICUError> ToLocaleUpperCase(
+ const char* aLocale, const char16_t* aString,
+ TestBuffer<char16_t>& aBuffer) {
+ aBuffer.clear();
+
+ MOZ_TRY(String::ToLocaleUpperCase(aLocale, MakeStringSpan(aString), aBuffer));
+
+ return aBuffer.get_string_view();
+}
+
+TEST(IntlString, ToLocaleLowerCase)
+{
+ TestBuffer<char16_t> buf;
+
+ ASSERT_EQ(ToLocaleLowerCase("en", u"test", buf).unwrap(), u"test");
+ ASSERT_EQ(ToLocaleLowerCase("en", u"TEST", buf).unwrap(), u"test");
+
+ // Turkish dotless i.
+ ASSERT_EQ(ToLocaleLowerCase("tr", u"I", buf).unwrap(), u"ı");
+ ASSERT_EQ(ToLocaleLowerCase("tr", u"İ", buf).unwrap(), u"i");
+ ASSERT_EQ(ToLocaleLowerCase("tr", u"I\u0307", buf).unwrap(), u"i");
+}
+
+TEST(IntlString, ToLocaleUpperCase)
+{
+ TestBuffer<char16_t> buf;
+
+ ASSERT_EQ(ToLocaleUpperCase("en", u"test", buf).unwrap(), u"TEST");
+ ASSERT_EQ(ToLocaleUpperCase("en", u"TEST", buf).unwrap(), u"TEST");
+
+ // Turkish dotless i.
+ ASSERT_EQ(ToLocaleUpperCase("tr", u"i", buf).unwrap(), u"İ");
+ ASSERT_EQ(ToLocaleUpperCase("tr", u"ı", buf).unwrap(), u"I");
+
+ // Output can be longer than the input string.
+ ASSERT_EQ(ToLocaleUpperCase("en", u"Größenmaßstäbe", buf).unwrap(),
+ u"GRÖSSENMASSSTÄBE");
+}
+
+TEST(IntlString, NormalizeNFC)
+{
+ using namespace std::literals;
+
+ using NormalizationForm = String::NormalizationForm;
+ using AlreadyNormalized = String::AlreadyNormalized;
+
+ TestBuffer<char16_t> buf;
+
+ auto alreadyNormalized =
+ String::Normalize(NormalizationForm::NFC, u""sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFC, u"abcdef"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFC, u"a\u0308"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"ä");
+
+ buf.clear();
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFC, u"½"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+}
+
+TEST(IntlString, NormalizeNFD)
+{
+ using namespace std::literals;
+
+ using NormalizationForm = String::NormalizationForm;
+ using AlreadyNormalized = String::AlreadyNormalized;
+
+ TestBuffer<char16_t> buf;
+
+ auto alreadyNormalized =
+ String::Normalize(NormalizationForm::NFD, u""sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFD, u"abcdef"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFD, u"ä"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"a\u0308");
+
+ buf.clear();
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFD, u"½"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ // Test with inline capacity.
+ TestBuffer<char16_t, 2> buf2;
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFD, u" ç"sv, buf2);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf2.get_string_view(), u" c\u0327");
+}
+
+TEST(IntlString, NormalizeNFKC)
+{
+ using namespace std::literals;
+
+ using NormalizationForm = String::NormalizationForm;
+ using AlreadyNormalized = String::AlreadyNormalized;
+
+ TestBuffer<char16_t> buf;
+
+ auto alreadyNormalized =
+ String::Normalize(NormalizationForm::NFKC, u""sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFKC, u"abcdef"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFKC, u"a\u0308"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"ä");
+
+ buf.clear();
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFKC, u"½"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"1⁄2");
+}
+
+TEST(IntlString, NormalizeNFKD)
+{
+ using namespace std::literals;
+
+ using NormalizationForm = String::NormalizationForm;
+ using AlreadyNormalized = String::AlreadyNormalized;
+
+ TestBuffer<char16_t> buf;
+
+ auto alreadyNormalized =
+ String::Normalize(NormalizationForm::NFKD, u""sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized =
+ String::Normalize(NormalizationForm::NFKD, u"abcdef"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::Yes);
+ ASSERT_EQ(buf.get_string_view(), u"");
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFKD, u"ä"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"a\u0308");
+
+ buf.clear();
+
+ alreadyNormalized = String::Normalize(NormalizationForm::NFKD, u"½"sv, buf);
+ ASSERT_EQ(alreadyNormalized.unwrap(), AlreadyNormalized::No);
+ ASSERT_EQ(buf.get_string_view(), u"1⁄2");
+}
+
+TEST(IntlString, ComposePairNFC)
+{
+ // Pair of base characters do not compose
+ ASSERT_EQ(String::ComposePairNFC(U'a', U'b'), U'\0');
+ // Base letter + accent
+ ASSERT_EQ(String::ComposePairNFC(U'a', U'\u0308'), U'ä');
+ // Accented letter + a further accent
+ ASSERT_EQ(String::ComposePairNFC(U'ä', U'\u0304'), U'ǟ');
+ // Accented letter + a further accent, but doubly-accented form is not
+ // available
+ ASSERT_EQ(String::ComposePairNFC(U'ä', U'\u0301'), U'\0');
+ // These do not compose because although U+0344 has the decomposition <0308,
+ // 0301> (see below), it also has the Full_Composition_Exclusion property.
+ ASSERT_EQ(String::ComposePairNFC(U'\u0308', U'\u0301'), U'\0');
+ // Supplementary-plane letter + accent
+ ASSERT_EQ(String::ComposePairNFC(U'\U00011099', U'\U000110BA'),
+ U'\U0001109A');
+}
+
+TEST(IntlString, DecomposeRawNFD)
+{
+ char32_t buf[2];
+ // Non-decomposable character
+ ASSERT_EQ(String::DecomposeRawNFD(U'a', buf), 0);
+ // Singleton decomposition
+ ASSERT_EQ(String::DecomposeRawNFD(U'\u212A', buf), 1);
+ ASSERT_EQ(buf[0], U'K');
+ // Simple accented letter
+ ASSERT_EQ(String::DecomposeRawNFD(U'ä', buf), 2);
+ ASSERT_EQ(buf[0], U'a');
+ ASSERT_EQ(buf[1], U'\u0308');
+ // Double-accented letter decomposes by only one level
+ ASSERT_EQ(String::DecomposeRawNFD(U'ǟ', buf), 2);
+ ASSERT_EQ(buf[0], U'ä');
+ ASSERT_EQ(buf[1], U'\u0304');
+ // Non-starter can decompose, but will not recompose (see above)
+ ASSERT_EQ(String::DecomposeRawNFD(U'\u0344', buf), 2);
+ ASSERT_EQ(buf[0], U'\u0308');
+ ASSERT_EQ(buf[1], U'\u0301');
+ // Supplementary-plane letter with decomposition
+ ASSERT_EQ(String::DecomposeRawNFD(U'\U0001109A', buf), 2);
+ ASSERT_EQ(buf[0], U'\U00011099');
+ ASSERT_EQ(buf[1], U'\U000110BA');
+}
+
+TEST(IntlString, IsCased)
+{
+ ASSERT_TRUE(String::IsCased(U'a'));
+ ASSERT_FALSE(String::IsCased(U'0'));
+}
+
+TEST(IntlString, IsCaseIgnorable)
+{
+ ASSERT_FALSE(String::IsCaseIgnorable(U'a'));
+ ASSERT_TRUE(String::IsCaseIgnorable(U'.'));
+}
+
+TEST(IntlString, GetUnicodeVersion)
+{
+ auto version = String::GetUnicodeVersion();
+
+ ASSERT_TRUE(std::all_of(version.begin(), version.end(), [](char ch) {
+ return IsAsciiDigit(ch) || ch == '.';
+ }));
+}
+
+} // namespace mozilla::intl