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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxcrt/retain_ptr.h"
#include <utility>
#include <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/pseudo_retainable.h"
namespace fxcrt {
TEST(RetainPtr, Null) {
RetainPtr<PseudoRetainable> ptr;
EXPECT_EQ(nullptr, ptr.Get());
}
TEST(RetainPtr, Normal) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr(&obj);
EXPECT_EQ(&obj, ptr.Get());
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
TEST(RetainPtr, CopyCtor) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr1(&obj);
{
RetainPtr<PseudoRetainable> ptr2(ptr1);
EXPECT_EQ(2, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(2, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
EXPECT_EQ(2, obj.retain_count());
EXPECT_EQ(2, obj.release_count());
}
TEST(RetainPtr, MoveCtor) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr1(&obj);
{
RetainPtr<PseudoRetainable> ptr2(std::move(ptr1));
EXPECT_EQ(nullptr, ptr1.Get());
EXPECT_EQ(&obj, ptr2.Get());
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
TEST(RetainPtr, ResetNull) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr(&obj);
ptr.Reset();
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
TEST(RetainPtr, Reset) {
PseudoRetainable obj1;
PseudoRetainable obj2;
{
RetainPtr<PseudoRetainable> ptr(&obj1);
ptr.Reset(&obj2);
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
EXPECT_EQ(1, obj2.retain_count());
EXPECT_EQ(0, obj2.release_count());
}
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
EXPECT_EQ(1, obj2.retain_count());
EXPECT_EQ(1, obj2.release_count());
}
TEST(RetainPtr, Swap) {
PseudoRetainable obj1;
PseudoRetainable obj2;
{
RetainPtr<PseudoRetainable> ptr1(&obj1);
{
RetainPtr<PseudoRetainable> ptr2(&obj2);
ptr1.Swap(ptr2);
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(0, obj1.release_count());
EXPECT_EQ(1, obj2.retain_count());
EXPECT_EQ(0, obj2.release_count());
}
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
EXPECT_EQ(1, obj2.retain_count());
EXPECT_EQ(0, obj2.release_count());
}
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
EXPECT_EQ(1, obj2.retain_count());
EXPECT_EQ(1, obj2.release_count());
}
TEST(RetainPtr, Leak) {
PseudoRetainable obj;
PseudoRetainable* leak;
{
RetainPtr<PseudoRetainable> ptr(&obj);
leak = ptr.Leak();
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
{
RetainPtr<PseudoRetainable> ptr;
ptr.Unleak(leak);
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
TEST(RetainPtr, SwapNull) {
PseudoRetainable obj1;
{
RetainPtr<PseudoRetainable> ptr1(&obj1);
{
RetainPtr<PseudoRetainable> ptr2;
ptr1.Swap(ptr2);
EXPECT_FALSE(ptr1);
EXPECT_TRUE(ptr2);
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(0, obj1.release_count());
}
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
}
EXPECT_EQ(1, obj1.retain_count());
EXPECT_EQ(1, obj1.release_count());
}
TEST(RetainPtr, Assign) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr(&obj);
{
RetainPtr<PseudoRetainable> ptr2;
ptr2 = ptr;
EXPECT_EQ(2, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
{
RetainPtr<PseudoRetainable> ptr2;
ptr2 = ptr.Get(); // Test assignment from underlying type.
EXPECT_EQ(3, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
EXPECT_EQ(3, obj.retain_count());
EXPECT_EQ(2, obj.release_count());
}
EXPECT_EQ(3, obj.retain_count());
EXPECT_EQ(3, obj.release_count());
}
TEST(RetainPtr, MoveAssign) {
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr1(&obj);
{
RetainPtr<PseudoRetainable> ptr2;
EXPECT_EQ(&obj, ptr1.Get());
EXPECT_EQ(nullptr, ptr2.Get());
ptr2 = std::move(ptr1);
EXPECT_EQ(nullptr, ptr1.Get());
EXPECT_EQ(&obj, ptr2.Get());
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
TEST(RetainPtr, Equals) {
PseudoRetainable obj1;
PseudoRetainable obj2;
RetainPtr<PseudoRetainable> null_ptr1;
RetainPtr<PseudoRetainable> obj1_ptr1(&obj1);
RetainPtr<PseudoRetainable> obj2_ptr1(&obj2);
{
RetainPtr<PseudoRetainable> null_ptr2;
EXPECT_TRUE(null_ptr1 == null_ptr2);
EXPECT_TRUE(null_ptr1 == nullptr);
RetainPtr<PseudoRetainable> obj1_ptr2(&obj1);
EXPECT_TRUE(obj1_ptr1 == obj1_ptr2);
EXPECT_TRUE(obj1_ptr2 == &obj1);
RetainPtr<PseudoRetainable> obj2_ptr2(&obj2);
EXPECT_TRUE(obj2_ptr1 == obj2_ptr2);
}
EXPECT_FALSE(null_ptr1 == obj1_ptr1);
EXPECT_FALSE(null_ptr1 == obj2_ptr1);
EXPECT_FALSE(obj1_ptr1 == obj2_ptr1);
}
TEST(RetainPtr, EqualsReflexive) {
PseudoRetainable obj1;
PseudoRetainable obj2;
RetainPtr<PseudoRetainable> obj1_ptr(&obj1);
RetainPtr<PseudoRetainable> obj2_ptr(&obj2);
EXPECT_TRUE(&obj1 == obj1_ptr);
EXPECT_FALSE(&obj1 == obj2_ptr);
EXPECT_FALSE(&obj2 == obj1_ptr);
EXPECT_TRUE(&obj2 == obj2_ptr);
}
TEST(RetainPtr, NotEquals) {
PseudoRetainable obj1;
PseudoRetainable obj2;
RetainPtr<PseudoRetainable> null_ptr1;
RetainPtr<PseudoRetainable> obj1_ptr1(&obj1);
RetainPtr<PseudoRetainable> obj2_ptr1(&obj2);
{
RetainPtr<PseudoRetainable> null_ptr2;
RetainPtr<PseudoRetainable> obj1_ptr2(&obj1);
RetainPtr<PseudoRetainable> obj2_ptr2(&obj2);
EXPECT_FALSE(null_ptr1 != null_ptr2);
EXPECT_FALSE(obj1_ptr1 != obj1_ptr2);
EXPECT_FALSE(obj2_ptr1 != obj2_ptr2);
}
EXPECT_TRUE(null_ptr1 != obj1_ptr1);
EXPECT_TRUE(null_ptr1 != obj2_ptr1);
EXPECT_TRUE(obj1_ptr1 != obj2_ptr1);
}
TEST(RetainPtr, NotEqualsReflexive) {
PseudoRetainable obj1;
PseudoRetainable obj2;
RetainPtr<PseudoRetainable> obj1_ptr(&obj1);
RetainPtr<PseudoRetainable> obj2_ptr(&obj2);
EXPECT_FALSE(&obj1 != obj1_ptr);
EXPECT_TRUE(&obj1 != obj2_ptr);
EXPECT_TRUE(&obj2 != obj1_ptr);
EXPECT_FALSE(&obj2 != obj2_ptr);
}
TEST(RetainPtr, LessThan) {
PseudoRetainable objs[2];
RetainPtr<PseudoRetainable> obj1_ptr(&objs[0]);
RetainPtr<PseudoRetainable> obj2_ptr(&objs[1]);
EXPECT_TRUE(obj1_ptr < obj2_ptr);
EXPECT_FALSE(obj2_ptr < obj1_ptr);
}
TEST(RetainPtr, Bool) {
PseudoRetainable obj1;
RetainPtr<PseudoRetainable> null_ptr;
RetainPtr<PseudoRetainable> obj1_ptr(&obj1);
bool null_bool = !!null_ptr;
bool obj1_bool = !!obj1_ptr;
EXPECT_FALSE(null_bool);
EXPECT_TRUE(obj1_bool);
}
TEST(RetainPtr, MakeRetained) {
auto ptr = pdfium::MakeRetain<Retainable>();
EXPECT_TRUE(ptr->HasOneRef());
{
RetainPtr<Retainable> other = ptr;
EXPECT_FALSE(ptr->HasOneRef());
}
EXPECT_TRUE(ptr->HasOneRef());
}
TEST(RetainPtr, VectorMove) {
// Proves move ctor is selected by std::vector over copy/delete, this
// may require the ctor to be marked "noexcept".
PseudoRetainable obj;
{
RetainPtr<PseudoRetainable> ptr(&obj);
std::vector<RetainPtr<PseudoRetainable>> vec1;
vec1.push_back(std::move(ptr));
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
std::vector<RetainPtr<PseudoRetainable>> vec2 = std::move(vec1);
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
vec2.resize(4096);
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(0, obj.release_count());
}
EXPECT_EQ(1, obj.retain_count());
EXPECT_EQ(1, obj.release_count());
}
} // namespace fxcrt