scoped_bstr_unittest.cc revision 731df977c0511bca2206b5f333555b1205ff1f43 
1// Copyright (c) 2010 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 "base/win/scoped_bstr.h"
6#include "testing/gtest/include/gtest/gtest.h"
7
8namespace base {
9namespace win {
10
11namespace {
12
13static const wchar_t kTestString1[] = L"123";
14static const wchar_t kTestString2[] = L"456789";
15size_t test1_len = arraysize(kTestString1) - 1;
16size_t test2_len = arraysize(kTestString2) - 1;
17
18void DumbBstrTests() {
19  ScopedBstr b;
20  EXPECT_TRUE(b == NULL);
21  EXPECT_EQ(0, b.Length());
22  EXPECT_EQ(0, b.ByteLength());
23  b.Reset(NULL);
24  EXPECT_TRUE(b == NULL);
25  EXPECT_TRUE(b.Release() == NULL);
26  ScopedBstr b2;
27  b.Swap(b2);
28  EXPECT_TRUE(b2 == NULL);
29}
30
31void GiveMeABstr(BSTR* ret) {
32  *ret = SysAllocString(kTestString1);
33}
34
35void BasicBstrTests() {
36  ScopedBstr b1(kTestString1);
37  EXPECT_EQ(test1_len, b1.Length());
38  EXPECT_EQ(test1_len * sizeof(kTestString1[0]), b1.ByteLength());
39
40  ScopedBstr b2;
41  b1.Swap(b2);
42  EXPECT_EQ(test1_len, b2.Length());
43  EXPECT_EQ(0, b1.Length());
44  EXPECT_EQ(0, lstrcmp(b2, kTestString1));
45  BSTR tmp = b2.Release();
46  EXPECT_TRUE(tmp != NULL);
47  EXPECT_EQ(0, lstrcmp(tmp, kTestString1));
48  EXPECT_TRUE(b2 == NULL);
49  SysFreeString(tmp);
50
51  GiveMeABstr(b2.Receive());
52  EXPECT_TRUE(b2 != NULL);
53  b2.Reset();
54  EXPECT_TRUE(b2.AllocateBytes(100) != NULL);
55  EXPECT_EQ(100, b2.ByteLength());
56  EXPECT_EQ(100 / sizeof(kTestString1[0]), b2.Length());
57  lstrcpy(static_cast<BSTR>(b2), kTestString1);
58  EXPECT_EQ(test1_len, lstrlen(b2));
59  EXPECT_EQ(100 / sizeof(kTestString1[0]), b2.Length());
60  b2.SetByteLen(lstrlen(b2) * sizeof(kTestString2[0]));
61  EXPECT_EQ(b2.Length(), lstrlen(b2));
62
63  EXPECT_TRUE(b1.Allocate(kTestString2) != NULL);
64  EXPECT_EQ(test2_len, b1.Length());
65  b1.SetByteLen((test2_len - 1) * sizeof(kTestString2[0]));
66  EXPECT_EQ(test2_len - 1, b1.Length());
67}
68
69}  // namespace
70
71TEST(ScopedBstrTest, ScopedBstr) {
72  DumbBstrTests();
73  BasicBstrTests();
74}
75
76}  // namespace win
77}  // namespace base
78