зеркало из https://github.com/mozilla/gecko-dev.git
203 строки
5.0 KiB
C++
203 строки
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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// vim:cindent:ts=4:et:sw=4:
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAutoPtr.h"
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#include "gtest/gtest.h"
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class TestObjectBaseA {
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public:
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// Virtual dtor for deleting through base class pointer
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virtual ~TestObjectBaseA() {}
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void MemberFunction(int, int*, int&) {}
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virtual void VirtualMemberFunction(int, int*, int&){};
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virtual void VirtualConstMemberFunction(int, int*, int&) const {};
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int fooA;
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};
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class TestObjectBaseB {
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public:
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// Virtual dtor for deleting through base class pointer
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virtual ~TestObjectBaseB() {}
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int fooB;
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};
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class TestObject : public TestObjectBaseA, public TestObjectBaseB {
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public:
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TestObject() {}
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// Virtual dtor for deleting through base class pointer
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virtual ~TestObject() { destructed++; }
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virtual void VirtualMemberFunction(int, int*, int&) override {}
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virtual void VirtualConstMemberFunction(int, int*, int&) const override {}
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static int destructed;
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static const void* last_ptr;
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};
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int TestObject::destructed = 0;
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const void* TestObject::last_ptr = nullptr;
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static void CreateTestObject(TestObject** aResult) {
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*aResult = new TestObject();
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}
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static void DoSomethingWithTestObject(TestObject* aIn) {
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TestObject::last_ptr = static_cast<void*>(aIn);
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}
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static void DoSomethingWithConstTestObject(const TestObject* aIn) {
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TestObject::last_ptr = static_cast<const void*>(aIn);
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}
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static void DoSomethingWithTestObjectBaseB(TestObjectBaseB* aIn) {
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TestObject::last_ptr = static_cast<void*>(aIn);
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}
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static void DoSomethingWithConstTestObjectBaseB(const TestObjectBaseB* aIn) {
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TestObject::last_ptr = static_cast<const void*>(aIn);
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}
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TEST(AutoPtr, Assignment)
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{
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TestObject::destructed = 0;
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{ nsAutoPtr<TestObject> pobj(new TestObject()); }
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ASSERT_EQ(1, TestObject::destructed);
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{
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nsAutoPtr<TestObject> pobj(new TestObject());
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pobj = new TestObject();
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ASSERT_EQ(2, TestObject::destructed);
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}
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ASSERT_EQ(3, TestObject::destructed);
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}
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TEST(AutoPtr, getter_Transfers)
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{
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TestObject::destructed = 0;
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{
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nsAutoPtr<TestObject> ptr;
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CreateTestObject(getter_Transfers(ptr));
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}
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ASSERT_EQ(1, TestObject::destructed);
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}
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TEST(AutoPtr, Casting)
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{
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// This comparison is always false, as it should be. The extra parens
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// suppress a -Wunreachable-code warning about printf being unreachable.
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ASSERT_NE(((void*)(TestObject*)0x1000),
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((void*)(TestObjectBaseB*)(TestObject*)0x1000));
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{
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nsAutoPtr<TestObject> p1(new TestObject());
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TestObjectBaseB* p2 = p1;
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ASSERT_NE(static_cast<void*>(p1), static_cast<void*>(p2));
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ASSERT_EQ(p1, p2);
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ASSERT_FALSE(p1 != p2);
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ASSERT_EQ(p2, p1);
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ASSERT_FALSE(p2 != p1);
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}
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{
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TestObject* p1 = new TestObject();
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nsAutoPtr<TestObjectBaseB> p2(p1);
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ASSERT_EQ(p1, p2);
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ASSERT_FALSE(p1 != p2);
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ASSERT_EQ(p2, p1);
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ASSERT_FALSE(p2 != p1);
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}
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}
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TEST(AutoPtr, Forget)
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{
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TestObject::destructed = 0;
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{
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nsAutoPtr<TestObject> pobj(new TestObject());
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nsAutoPtr<TestObject> pobj2(pobj.forget());
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ASSERT_EQ(0, TestObject::destructed);
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}
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ASSERT_EQ(1, TestObject::destructed);
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}
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TEST(AutoPtr, Construction)
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{
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TestObject::destructed = 0;
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{ nsAutoPtr<TestObject> pobj(new TestObject()); }
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ASSERT_EQ(1, TestObject::destructed);
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}
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TEST(AutoPtr, ImplicitConversion)
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{
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// This test is basically successful if it builds. We add a few assertions
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// to make gtest happy.
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TestObject::destructed = 0;
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{
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nsAutoPtr<TestObject> pobj(new TestObject());
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DoSomethingWithTestObject(pobj);
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DoSomethingWithConstTestObject(pobj);
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}
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ASSERT_EQ(1, TestObject::destructed);
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{
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nsAutoPtr<TestObject> pobj(new TestObject());
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DoSomethingWithTestObjectBaseB(pobj);
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DoSomethingWithConstTestObjectBaseB(pobj);
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}
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ASSERT_EQ(2, TestObject::destructed);
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{
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const nsAutoPtr<TestObject> pobj(new TestObject());
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DoSomethingWithTestObject(pobj);
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DoSomethingWithConstTestObject(pobj);
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}
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ASSERT_EQ(3, TestObject::destructed);
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{
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const nsAutoPtr<TestObject> pobj(new TestObject());
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DoSomethingWithTestObjectBaseB(pobj);
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DoSomethingWithConstTestObjectBaseB(pobj);
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}
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ASSERT_EQ(4, TestObject::destructed);
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}
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TEST(AutoPtr, ArrowOperator)
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{
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// This test is basically successful if it builds. We add a few assertions
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// to make gtest happy.
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TestObject::destructed = 0;
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{
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int test = 1;
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void (TestObjectBaseA::*fPtr)(int, int*, int&) =
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&TestObjectBaseA::MemberFunction;
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void (TestObjectBaseA::*fVPtr)(int, int*, int&) =
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&TestObjectBaseA::VirtualMemberFunction;
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void (TestObjectBaseA::*fVCPtr)(int, int*, int&) const =
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&TestObjectBaseA::VirtualConstMemberFunction;
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nsAutoPtr<TestObjectBaseA> pobj(new TestObject());
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(pobj->*fPtr)(test, &test, test);
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(pobj->*fVPtr)(test, &test, test);
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(pobj->*fVCPtr)(test, &test, test);
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}
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ASSERT_EQ(1, TestObject::destructed);
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}
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