1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "base/win/enum_variant.h"
#include <wrl/client.h>
#include <wrl/implements.h>
#include "base/win/scoped_com_initializer.h"
#include "base/win/scoped_variant.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace win {
TEST(EnumVariantTest, EmptyEnumVariant) {
ScopedCOMInitializer com_initializer;
Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(0);
Microsoft::WRL::ComPtr<IEnumVARIANT> ienumvariant;
ASSERT_TRUE(SUCCEEDED(ev->QueryInterface(IID_PPV_ARGS(&ienumvariant))));
{
base::win::ScopedVariant out_element;
ULONG out_received = 0;
EXPECT_EQ(S_FALSE, ev->Next(1, out_element.Receive(), &out_received));
EXPECT_EQ(0u, out_received);
}
EXPECT_EQ(S_FALSE, ev->Skip(1));
EXPECT_EQ(S_OK, ev->Reset());
Microsoft::WRL::ComPtr<IEnumVARIANT> ev2;
EXPECT_EQ(S_OK, ev->Clone(&ev2));
EXPECT_NE(nullptr, ev2);
EXPECT_NE(ev, ev2);
EXPECT_EQ(S_FALSE, ev2->Skip(1));
EXPECT_EQ(S_OK, ev2->Reset());
}
TEST(EnumVariantTest, SimpleEnumVariant) {
ScopedCOMInitializer com_initializer;
Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(3);
ev->ItemAt(0)->vt = VT_I4;
ev->ItemAt(0)->lVal = 10;
ev->ItemAt(1)->vt = VT_I4;
ev->ItemAt(1)->lVal = 20;
ev->ItemAt(2)->vt = VT_I4;
ev->ItemAt(2)->lVal = 30;
// Get elements one at a time from index 0 and 2.
base::win::ScopedVariant out_element_0;
ULONG out_received_0 = 0;
EXPECT_EQ(S_OK, ev->Next(1, out_element_0.Receive(), &out_received_0));
EXPECT_EQ(1u, out_received_0);
EXPECT_EQ(VT_I4, out_element_0.ptr()->vt);
EXPECT_EQ(10, out_element_0.ptr()->lVal);
EXPECT_EQ(S_OK, ev->Skip(1));
base::win::ScopedVariant out_element_2;
ULONG out_received_2 = 0;
EXPECT_EQ(S_OK, ev->Next(1, out_element_2.Receive(), &out_received_2));
EXPECT_EQ(1u, out_received_2);
EXPECT_EQ(VT_I4, out_element_2.ptr()->vt);
EXPECT_EQ(30, out_element_2.ptr()->lVal);
base::win::ScopedVariant placeholder_variant;
EXPECT_EQ(S_FALSE, ev->Next(1, placeholder_variant.Receive(), nullptr));
// Verify the reset works for the next step.
ASSERT_EQ(S_OK, ev->Reset());
// Get all elements at once.
VARIANT out_elements[3];
ULONG out_received_multiple;
for (int i = 0; i < 3; ++i) {
::VariantInit(&out_elements[i]);
}
EXPECT_EQ(S_OK, ev->Next(3, out_elements, &out_received_multiple));
EXPECT_EQ(3u, out_received_multiple);
EXPECT_EQ(VT_I4, out_elements[0].vt);
EXPECT_EQ(10, out_elements[0].lVal);
EXPECT_EQ(VT_I4, out_elements[1].vt);
EXPECT_EQ(20, out_elements[1].lVal);
EXPECT_EQ(VT_I4, out_elements[2].vt);
EXPECT_EQ(30, out_elements[2].lVal);
for (int i = 0; i < 3; ++i) {
::VariantClear(&out_elements[i]);
}
base::win::ScopedVariant placeholder_variant_multiple;
EXPECT_EQ(S_FALSE,
ev->Next(1, placeholder_variant_multiple.Receive(), nullptr));
}
TEST(EnumVariantTest, Clone) {
ScopedCOMInitializer com_initializer;
Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(3);
ev->ItemAt(0)->vt = VT_I4;
ev->ItemAt(0)->lVal = 10;
ev->ItemAt(1)->vt = VT_I4;
ev->ItemAt(1)->lVal = 20;
ev->ItemAt(2)->vt = VT_I4;
ev->ItemAt(2)->lVal = 30;
// Clone it.
Microsoft::WRL::ComPtr<IEnumVARIANT> ev2;
EXPECT_EQ(S_OK, ev->Clone(&ev2));
EXPECT_TRUE(ev2 != nullptr);
VARIANT out_elements[3];
for (int i = 0; i < 3; ++i) {
::VariantInit(&out_elements[i]);
}
EXPECT_EQ(S_OK, ev2->Next(3, out_elements, nullptr));
EXPECT_EQ(VT_I4, out_elements[0].vt);
EXPECT_EQ(10, out_elements[0].lVal);
EXPECT_EQ(VT_I4, out_elements[1].vt);
EXPECT_EQ(20, out_elements[1].lVal);
EXPECT_EQ(VT_I4, out_elements[2].vt);
EXPECT_EQ(30, out_elements[2].lVal);
for (int i = 0; i < 3; ++i) {
::VariantClear(&out_elements[i]);
}
}
} // namespace win
} // namespace base
|
