base/strings/string16_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <sstream>
   6
   7 #include "base/strings/string16.h"
   8
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace base {
  13
  14 #if defined(WCHAR_T_IS_UTF32)
  15
  16 // We define a custom operator<< for string16 so we can use it with logging.
  17 // This tests that conversion.
  18 TEST(String16Test, OutputStream) {
  19   // Basic stream test.
  20   {
  21     std::ostringstream stream;
  22     stream << "Empty '" << string16() << "' standard '"
  23            << string16(ASCIIToUTF16("Hello, world")) << "'";
  24     EXPECT_STREQ("Empty '' standard 'Hello, world'",
  25                  stream.str().c_str());
  26   }
  27
  28   // Interesting edge cases.
  29   {
  30     // These should each get converted to the invalid character: EF BF BD.
  31     string16 initial_surrogate;
  32     initial_surrogate.push_back(0xd800);
  33     string16 final_surrogate;
  34     final_surrogate.push_back(0xdc00);
  35
  36     // Old italic A = U+10300, will get converted to: F0 90 8C 80 'z'.
  37     string16 surrogate_pair;
  38     surrogate_pair.push_back(0xd800);
  39     surrogate_pair.push_back(0xdf00);
  40     surrogate_pair.push_back('z');
  41
  42     // Will get converted to the invalid char + 's': EF BF BD 's'.
  43     string16 unterminated_surrogate;
  44     unterminated_surrogate.push_back(0xd800);
  45     unterminated_surrogate.push_back('s');
  46
  47     std::ostringstream stream;
  48     stream << initial_surrogate << "," << final_surrogate << ","
  49            << surrogate_pair << "," << unterminated_surrogate;
  50
  51     EXPECT_STREQ("\xef\xbf\xbd,\xef\xbf\xbd,\xf0\x90\x8c\x80z,\xef\xbf\xbds",
  52                  stream.str().c_str());
  53   }
  54 }
  55
  56 #endif
  57
  58 }  // namespace base