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
12namespace 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.
18TEST(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
59