131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
// Copyright 2011 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/enum_variant.h"
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#include <wrl/client.h>
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#include <wrl/implements.h>
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#include "base/win/scoped_com_initializer.h"
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#include "base/win/scoped_variant.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace win {
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TEST(EnumVariantTest, EmptyEnumVariant) {
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ScopedCOMInitializer com_initializer;
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Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(0);
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Microsoft::WRL::ComPtr<IEnumVARIANT> ienumvariant;
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ASSERT_TRUE(SUCCEEDED(ev->QueryInterface(IID_PPV_ARGS(&ienumvariant))));
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{
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base::win::ScopedVariant out_element;
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ULONG out_received = 0;
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EXPECT_EQ(S_FALSE, ev->Next(1, out_element.Receive(), &out_received));
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EXPECT_EQ(0u, out_received);
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}
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EXPECT_EQ(S_FALSE, ev->Skip(1));
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EXPECT_EQ(S_OK, ev->Reset());
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Microsoft::WRL::ComPtr<IEnumVARIANT> ev2;
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EXPECT_EQ(S_OK, ev->Clone(&ev2));
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EXPECT_NE(nullptr, ev2);
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EXPECT_NE(ev, ev2);
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EXPECT_EQ(S_FALSE, ev2->Skip(1));
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EXPECT_EQ(S_OK, ev2->Reset());
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}
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TEST(EnumVariantTest, SimpleEnumVariant) {
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ScopedCOMInitializer com_initializer;
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Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(3);
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ev->ItemAt(0)->vt = VT_I4;
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ev->ItemAt(0)->lVal = 10;
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ev->ItemAt(1)->vt = VT_I4;
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ev->ItemAt(1)->lVal = 20;
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ev->ItemAt(2)->vt = VT_I4;
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ev->ItemAt(2)->lVal = 30;
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// Get elements one at a time from index 0 and 2.
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base::win::ScopedVariant out_element_0;
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ULONG out_received_0 = 0;
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EXPECT_EQ(S_OK, ev->Next(1, out_element_0.Receive(), &out_received_0));
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EXPECT_EQ(1u, out_received_0);
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EXPECT_EQ(VT_I4, out_element_0.ptr()->vt);
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EXPECT_EQ(10, out_element_0.ptr()->lVal);
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EXPECT_EQ(S_OK, ev->Skip(1));
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base::win::ScopedVariant out_element_2;
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ULONG out_received_2 = 0;
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EXPECT_EQ(S_OK, ev->Next(1, out_element_2.Receive(), &out_received_2));
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EXPECT_EQ(1u, out_received_2);
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EXPECT_EQ(VT_I4, out_element_2.ptr()->vt);
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EXPECT_EQ(30, out_element_2.ptr()->lVal);
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base::win::ScopedVariant placeholder_variant;
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EXPECT_EQ(S_FALSE, ev->Next(1, placeholder_variant.Receive(), nullptr));
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// Verify the reset works for the next step.
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ASSERT_EQ(S_OK, ev->Reset());
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// Get all elements at once.
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VARIANT out_elements[3];
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ULONG out_received_multiple;
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for (int i = 0; i < 3; ++i)
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::VariantInit(&out_elements[i]);
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EXPECT_EQ(S_OK, ev->Next(3, out_elements, &out_received_multiple));
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EXPECT_EQ(3u, out_received_multiple);
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EXPECT_EQ(VT_I4, out_elements[0].vt);
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EXPECT_EQ(10, out_elements[0].lVal);
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EXPECT_EQ(VT_I4, out_elements[1].vt);
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EXPECT_EQ(20, out_elements[1].lVal);
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EXPECT_EQ(VT_I4, out_elements[2].vt);
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EXPECT_EQ(30, out_elements[2].lVal);
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for (int i = 0; i < 3; ++i)
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::VariantClear(&out_elements[i]);
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base::win::ScopedVariant placeholder_variant_multiple;
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EXPECT_EQ(S_FALSE,
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ev->Next(1, placeholder_variant_multiple.Receive(), nullptr));
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}
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TEST(EnumVariantTest, Clone) {
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ScopedCOMInitializer com_initializer;
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Microsoft::WRL::ComPtr<EnumVariant> ev = Microsoft::WRL::Make<EnumVariant>(3);
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ev->ItemAt(0)->vt = VT_I4;
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ev->ItemAt(0)->lVal = 10;
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ev->ItemAt(1)->vt = VT_I4;
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ev->ItemAt(1)->lVal = 20;
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ev->ItemAt(2)->vt = VT_I4;
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ev->ItemAt(2)->lVal = 30;
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// Clone it.
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Microsoft::WRL::ComPtr<IEnumVARIANT> ev2;
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EXPECT_EQ(S_OK, ev->Clone(&ev2));
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EXPECT_TRUE(ev2 != nullptr);
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VARIANT out_elements[3];
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for (int i = 0; i < 3; ++i)
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::VariantInit(&out_elements[i]);
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EXPECT_EQ(S_OK, ev2->Next(3, out_elements, nullptr));
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EXPECT_EQ(VT_I4, out_elements[0].vt);
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EXPECT_EQ(10, out_elements[0].lVal);
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EXPECT_EQ(VT_I4, out_elements[1].vt);
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EXPECT_EQ(20, out_elements[1].lVal);
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EXPECT_EQ(VT_I4, out_elements[2].vt);
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EXPECT_EQ(30, out_elements[2].lVal);
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for (int i = 0; i < 3; ++i)
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::VariantClear(&out_elements[i]);
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}
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} // namespace win
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} // namespace base
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