mirror of
https://github.com/encounter/dawn-cmake.git
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f941205370
Bug: None Change-Id: If436fbf5c2392051caeadfc4a7482544d565b597 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/19720 Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
// Copyright 2020 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "common/PlacementAllocated.h"
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using namespace testing;
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namespace {
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enum class DestructedClass {
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Foo,
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Bar,
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};
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class MockDestructor {
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public:
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MOCK_METHOD(void, Call, (void*, DestructedClass));
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};
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std::unique_ptr<StrictMock<MockDestructor>> mockDestructor;
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class PlacementAllocatedTests : public Test {
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void SetUp() override {
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mockDestructor = std::make_unique<StrictMock<MockDestructor>>();
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}
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void TearDown() override {
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mockDestructor = nullptr;
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}
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};
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struct Foo : PlacementAllocated {
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virtual ~Foo() {
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mockDestructor->Call(this, DestructedClass::Foo);
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}
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};
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struct Bar : Foo {
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~Bar() override {
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mockDestructor->Call(this, DestructedClass::Bar);
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}
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};
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} // namespace
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// Test that deletion calls the destructor and does not free memory.
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TEST_F(PlacementAllocatedTests, DeletionDoesNotFreeMemory) {
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void* ptr = malloc(sizeof(Foo));
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Foo* foo = new (ptr) Foo();
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EXPECT_CALL(*mockDestructor, Call(foo, DestructedClass::Foo));
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delete foo;
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// Touch the memory, this shouldn't crash.
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static_assert(sizeof(Foo) >= sizeof(uint32_t), "");
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*reinterpret_cast<uint32_t*>(foo) = 42;
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free(ptr);
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}
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// Test that destructing an instance of a derived class calls the derived, then base destructor, and
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// does not free memory.
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TEST_F(PlacementAllocatedTests, DeletingDerivedClassCallsBaseDestructor) {
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void* ptr = malloc(sizeof(Bar));
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Bar* bar = new (ptr) Bar();
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{
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InSequence s;
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EXPECT_CALL(*mockDestructor, Call(bar, DestructedClass::Bar));
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EXPECT_CALL(*mockDestructor, Call(bar, DestructedClass::Foo));
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delete bar;
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}
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// Touch the memory, this shouldn't crash.
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static_assert(sizeof(Bar) >= sizeof(uint32_t), "");
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*reinterpret_cast<uint32_t*>(bar) = 42;
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free(ptr);
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}
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// Test that destructing an instance of a base class calls the derived, then base destructor, and
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// does not free memory.
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TEST_F(PlacementAllocatedTests, DeletingBaseClassCallsDerivedDestructor) {
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void* ptr = malloc(sizeof(Bar));
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Foo* foo = new (ptr) Bar();
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{
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InSequence s;
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EXPECT_CALL(*mockDestructor, Call(foo, DestructedClass::Bar));
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EXPECT_CALL(*mockDestructor, Call(foo, DestructedClass::Foo));
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delete foo;
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}
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// Touch the memory, this shouldn't crash.
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static_assert(sizeof(Bar) >= sizeof(uint32_t), "");
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*reinterpret_cast<uint32_t*>(foo) = 42;
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free(ptr);
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}
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