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