112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/*
|
|
* Copyright 2019 The WebRTC Project Authors. All rights reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "api/scoped_refptr.h"
|
|
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
#include "test/gtest.h"
|
|
|
|
namespace rtc {
|
|
namespace {
|
|
|
|
struct FunctionsCalled {
|
|
int addref = 0;
|
|
int release = 0;
|
|
};
|
|
|
|
class ScopedRefCounted {
|
|
public:
|
|
explicit ScopedRefCounted(FunctionsCalled* called) : called_(*called) {}
|
|
ScopedRefCounted(const ScopedRefCounted&) = delete;
|
|
ScopedRefCounted& operator=(const ScopedRefCounted&) = delete;
|
|
|
|
void AddRef() {
|
|
++called_.addref;
|
|
++ref_count_;
|
|
}
|
|
void Release() {
|
|
++called_.release;
|
|
if (0 == --ref_count_)
|
|
delete this;
|
|
}
|
|
|
|
private:
|
|
~ScopedRefCounted() = default;
|
|
|
|
FunctionsCalled& called_;
|
|
int ref_count_ = 0;
|
|
};
|
|
|
|
TEST(ScopedRefptrTest, IsCopyConstructable) {
|
|
FunctionsCalled called;
|
|
scoped_refptr<ScopedRefCounted> ptr = new ScopedRefCounted(&called);
|
|
scoped_refptr<ScopedRefCounted> another_ptr = ptr;
|
|
|
|
EXPECT_TRUE(ptr);
|
|
EXPECT_TRUE(another_ptr);
|
|
EXPECT_EQ(called.addref, 2);
|
|
}
|
|
|
|
TEST(ScopedRefptrTest, IsCopyAssignable) {
|
|
FunctionsCalled called;
|
|
scoped_refptr<ScopedRefCounted> another_ptr;
|
|
scoped_refptr<ScopedRefCounted> ptr = new ScopedRefCounted(&called);
|
|
another_ptr = ptr;
|
|
|
|
EXPECT_TRUE(ptr);
|
|
EXPECT_TRUE(another_ptr);
|
|
EXPECT_EQ(called.addref, 2);
|
|
}
|
|
|
|
TEST(ScopedRefptrTest, IsMoveConstructableWithoutExtraAddRefRelease) {
|
|
FunctionsCalled called;
|
|
scoped_refptr<ScopedRefCounted> ptr = new ScopedRefCounted(&called);
|
|
scoped_refptr<ScopedRefCounted> another_ptr = std::move(ptr);
|
|
|
|
EXPECT_FALSE(ptr);
|
|
EXPECT_TRUE(another_ptr);
|
|
EXPECT_EQ(called.addref, 1);
|
|
EXPECT_EQ(called.release, 0);
|
|
}
|
|
|
|
TEST(ScopedRefptrTest, IsMoveAssignableWithoutExtraAddRefRelease) {
|
|
FunctionsCalled called;
|
|
scoped_refptr<ScopedRefCounted> another_ptr;
|
|
scoped_refptr<ScopedRefCounted> ptr = new ScopedRefCounted(&called);
|
|
another_ptr = std::move(ptr);
|
|
|
|
EXPECT_FALSE(ptr);
|
|
EXPECT_TRUE(another_ptr);
|
|
EXPECT_EQ(called.addref, 1);
|
|
EXPECT_EQ(called.release, 0);
|
|
}
|
|
|
|
TEST(ScopedRefptrTest, MovableDuringVectorReallocation) {
|
|
static_assert(
|
|
std::is_nothrow_move_constructible<scoped_refptr<ScopedRefCounted>>(),
|
|
"");
|
|
// Test below describes a scenario where it is helpful for move constructor
|
|
// to be noexcept.
|
|
FunctionsCalled called;
|
|
std::vector<scoped_refptr<ScopedRefCounted>> ptrs;
|
|
ptrs.reserve(1);
|
|
// Insert more elements than reserved to provoke reallocation.
|
|
ptrs.push_back(new ScopedRefCounted(&called));
|
|
ptrs.push_back(new ScopedRefCounted(&called));
|
|
|
|
EXPECT_EQ(called.addref, 2);
|
|
EXPECT_EQ(called.release, 0);
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace rtc
|