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// Copyright 2020 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 <utility>
#include "fxjs/gc/heap.h"
#include "testing/fxgc_unittest.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "v8/include/cppgc/member.h"
#include "v8/include/cppgc/persistent.h"
namespace {
class HeapObject : public cppgc::GarbageCollected<HeapObject> {
public:
CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED;
void Trace(cppgc::Visitor* visitor) const {
visitor->Trace(frick_);
visitor->Trace(frack_);
}
cppgc::Member<HeapObject> frick_;
cppgc::Member<HeapObject> frack_;
private:
HeapObject() = default;
};
class CppObject {
public:
CppObject() = default;
cppgc::Persistent<HeapObject> click_;
cppgc::Persistent<HeapObject> clack_;
};
} // namespace
class MoveUnitTest : public FXGCUnitTest {};
TEST_F(MoveUnitTest, Member) {
// Moving a Member<> leaves the moved-from object as null.
auto* obj =
cppgc::MakeGarbageCollected<HeapObject>(heap()->GetAllocationHandle());
obj->frick_ = obj;
obj->frack_ = std::move(obj->frick_);
EXPECT_EQ(nullptr, obj->frick_);
EXPECT_EQ(obj, obj->frack_);
}
TEST_F(MoveUnitTest, Persistent) {
// Moving a Persistent<> leaves the moved-from object as null.
auto* obj =
cppgc::MakeGarbageCollected<HeapObject>(heap()->GetAllocationHandle());
CppObject outsider;
outsider.click_ = obj;
outsider.clack_ = std::move(outsider.click_);
EXPECT_EQ(nullptr, outsider.click_);
EXPECT_EQ(obj, outsider.clack_);
}