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// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <utility>
#include "dawn/webgpu_cpp.h"
#include "gtest/gtest.h"
class Object : public wgpu::ObjectBase<Object, int*> {
public:
using ObjectBase::ObjectBase;
using ObjectBase::operator=;
static void WGPUReference(int* handle) {
ASSERT_LE(0, *handle);
*handle += 1;
}
static void WGPURelease(int* handle) {
ASSERT_LT(0, *handle);
*handle -= 1;
}
};
// Test that creating an C++ object from a C object takes a ref.
// Also test that the C++ object destructor removes a ref.
TEST(ObjectBase, CTypeConstructor) {
int refcount = 1;
{
Object obj(&refcount);
ASSERT_EQ(2, refcount);
}
ASSERT_EQ(1, refcount);
}
// Test consuming a C object into a C++ object doesn't take a ref.
TEST(ObjectBase, AcquireConstruction) {
int refcount = 1;
{
Object object = Object::Acquire(&refcount);
ASSERT_EQ(1, refcount);
}
ASSERT_EQ(0, refcount);
}
// Test .Get().
TEST(ObjectBase, Get) {
int refcount = 1;
{
Object obj1(&refcount);
ASSERT_EQ(2, refcount);
ASSERT_EQ(&refcount, obj1.Get());
}
ASSERT_EQ(1, refcount);
}
// Test that Release consumes the C++ object into a C object and doesn't release
TEST(ObjectBase, Release) {
int refcount = 1;
{
Object obj(&refcount);
ASSERT_EQ(2, refcount);
ASSERT_EQ(&refcount, obj.Release());
ASSERT_EQ(nullptr, obj.Get());
ASSERT_EQ(2, refcount);
}
ASSERT_EQ(2, refcount);
}
// Test using C++ objects in conditions
TEST(ObjectBase, OperatorBool) {
int refcount = 1;
Object trueObj(&refcount);
Object falseObj;
if (falseObj || !trueObj) {
ASSERT_TRUE(false);
}
}
// Test the copy constructor of C++ objects
TEST(ObjectBase, CopyConstructor) {
int refcount = 1;
Object source(&refcount);
Object destination(source);
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the copy assignment of C++ objects
TEST(ObjectBase, CopyAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
destination = source;
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the repeated copy assignment of C++ objects
TEST(ObjectBase, RepeatedCopyAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
for (int i = 0; i < 10; i++) {
destination = source;
}
ASSERT_EQ(source.Get(), &refcount);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(3, refcount);
destination = Object();
ASSERT_EQ(refcount, 2);
}
// Test the copy assignment of C++ objects onto themselves
TEST(ObjectBase, CopyAssignmentSelf) {
int refcount = 1;
Object obj(&refcount);
// Fool the compiler to avoid a -Wself-assign-overload
Object* objPtr = &obj;
obj = *objPtr;
ASSERT_EQ(obj.Get(), &refcount);
ASSERT_EQ(refcount, 2);
}
// Test the move constructor of C++ objects
TEST(ObjectBase, MoveConstructor) {
int refcount = 1;
Object source(&refcount);
Object destination(std::move(source));
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(2, refcount);
destination = Object();
ASSERT_EQ(refcount, 1);
}
// Test the move assignment of C++ objects
TEST(ObjectBase, MoveAssignment) {
int refcount = 1;
Object source(&refcount);
Object destination;
destination = std::move(source);
ASSERT_EQ(destination.Get(), &refcount);
ASSERT_EQ(2, refcount);
destination = Object();
ASSERT_EQ(refcount, 1);
}
// Test the move assignment of C++ objects onto themselves
TEST(ObjectBase, MoveAssignmentSelf) {
int refcount = 1;
Object obj(&refcount);
// Fool the compiler to avoid a -Wself-move
Object* objPtr = &obj;
obj = std::move(*objPtr);
ASSERT_EQ(obj.Get(), &refcount);
ASSERT_EQ(refcount, 2);
}
// Test the constructor using nullptr
TEST(ObjectBase, NullptrConstructor) {
Object obj(nullptr);
ASSERT_EQ(obj.Get(), nullptr);
}
// Test assigning nullptr to the object
TEST(ObjectBase, AssignNullptr) {
int refcount = 1;
Object obj(&refcount);
ASSERT_EQ(refcount, 2);
obj = nullptr;
ASSERT_EQ(refcount, 1);
}