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#if defined(WCHAR_T_IS_UTF32)
13
14// We define a custom operator<< for string16 so we can use it with logging.
15// This tests that conversion.
16TEST(String16Test, OutputStream) {
17  // Basic stream test.
18  {
19    std::ostringstream stream;
20    stream << "Empty '" << string16() << "' standard '"
21           << string16(ASCIIToUTF16("Hello, world")) << "'";
22    EXPECT_STREQ("Empty '' standard 'Hello, world'",
23                 stream.str().c_str());
24  }
25
26  // Interesting edge cases.
27  {
28    // These should each get converted to the invalid character: EF BF BD.
29    string16 initial_surrogate;
30    initial_surrogate.push_back(0xd800);
31    string16 final_surrogate;
32    final_surrogate.push_back(0xdc00);
33
34    // Old italic A = U+10300, will get converted to: F0 90 8C 80 'z'.
35    string16 surrogate_pair;
36    surrogate_pair.push_back(0xd800);
37    surrogate_pair.push_back(0xdf00);
38    surrogate_pair.push_back('z');
39
40    // Will get converted to the invalid char + 's': EF BF BD 's'.
41    string16 unterminated_surrogate;
42    unterminated_surrogate.push_back(0xd800);
43    unterminated_surrogate.push_back('s');
44
45    std::ostringstream stream;
46    stream << initial_surrogate << "," << final_surrogate << ","
47           << surrogate_pair << "," << unterminated_surrogate;
48
49    EXPECT_STREQ("\xef\xbf\xbd,\xef\xbf\xbd,\xf0\x90\x8c\x80z,\xef\xbf\xbds",
50                 stream.str().c_str());
51  }
52}
53
54#endif
55