base/string16_unittest.cc

   1 // Copyright (c) 2009 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/string16.h"
   8 #include "base/utf_string_conversions.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10
  11 #if defined(WCHAR_T_IS_UTF32)
  12
  13 // We define a custom operator<< for string16 so we can use it with logging.
  14 // This tests that conversion.
  15 TEST(String16Test, OutputStream) {
  16   // Basic stream test.
  17   {
  18     std::ostringstream stream;
  19     stream << "Empty '" << string16() << "' standard '"
  20            << string16(ASCIIToUTF16("Hello, world")) << "'";
  21     EXPECT_STREQ("Empty '' standard 'Hello, world'",
  22                  stream.str().c_str());
  23   }
  24
  25   // Interesting edge cases.
  26   {
  27     // These should each get converted to the invalid character: EF BF BD.
  28     string16 initial_surrogate;
  29     initial_surrogate.push_back(0xd800);
  30     string16 final_surrogate;
  31     final_surrogate.push_back(0xdc00);
  32
  33     // Old italic A = U+10300, will get converted to: F0 90 8C 80 'z'.
  34     string16 surrogate_pair;
  35     surrogate_pair.push_back(0xd800);
  36     surrogate_pair.push_back(0xdf00);
  37     surrogate_pair.push_back('z');
  38
  39     // Will get converted to the invalid char + 's': EF BF BD 's'.
  40     string16 unterminated_surrogate;
  41     unterminated_surrogate.push_back(0xd800);
  42     unterminated_surrogate.push_back('s');
  43
  44     std::ostringstream stream;
  45     stream << initial_surrogate << "," << final_surrogate << ","
  46            << surrogate_pair << "," << unterminated_surrogate;
  47
  48     EXPECT_STREQ("\xef\xbf\xbd,\xef\xbf\xbd,\xf0\x90\x8c\x80z,\xef\xbf\xbds",
  49                  stream.str().c_str());
  50   }
  51 }
  52
  53 #endif