chromium/base/strings/utf_string_conversions_unittest.cc

// Copyright 2010 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/strings/utf_string_conversions.h"

#include <stddef.h>

#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace base {

namespace {

const wchar_t* const kConvertRoundtripCases[] = …;

}  // namespace

TEST(UTFStringConversionsTest, ConvertUTF8AndWide) { … }

TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) { … }

TEST(UTFStringConversionsTest, ConvertUTF8ToWide) { … }

#if defined(WCHAR_T_IS_16_BIT)
// This test is only valid when wchar_t == UTF-16.
TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
  struct WideToUTF8Case {
    const wchar_t* utf16;
    const char* utf8;
    bool success;
  } convert_cases[] = {
    // Regular UTF-16 input.
    {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
    // Test a non-BMP character.
    {L"\xd800\xdf00", "\xF0\x90\x8C\x80", true},
    // Non-characters are passed through.
    {L"\xffffHello", "\xEF\xBF\xBFHello", true},
    {L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true},
    // The first character is a truncated UTF-16 character.
    {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
    // Truncated at the end.
    {L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false},
  };

  for (const auto& test : convert_cases) {
    std::string converted;
    EXPECT_EQ(test.success,
              WideToUTF8(test.utf16, wcslen(test.utf16), &converted));
    std::string expected(test.utf8);
    EXPECT_EQ(expected, converted);
  }
}

#elif defined(WCHAR_T_IS_32_BIT)
// This test is only valid when wchar_t == UTF-32.
TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) { … }
#endif  // defined(WCHAR_T_IS_32_BIT)

TEST(UTFStringConversionsTest, ConvertMultiString) { … }

}  // namespace base