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