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gecko-dev/xpcom/tests/TestAutoPtr.cpp

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20 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=4:et:sw=4:
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsAutoPtr.h"
#include <stdio.h>
#include "nscore.h"
#include "mozilla/Attributes.h"
class TestObjectBaseA {
public:
// Virtual dtor for deleting through base class pointer
virtual ~TestObjectBaseA() { }
void MemberFunction( int, int*, int& )
{
printf("member function is invoked.\n");
}
virtual void VirtualMemberFunction(int, int*, int&) { };
virtual void VirtualConstMemberFunction(int, int*, int&) const { };
int fooA;
};
class TestObjectBaseB {
public:
// Virtual dtor for deleting through base class pointer
virtual ~TestObjectBaseB() { }
int fooB;
};
class TestObject : public TestObjectBaseA, public TestObjectBaseB {
public:
TestObject()
{
printf(" Creating TestObject %p.\n",
static_cast<void*>(this));
}
// Virtual dtor for deleting through base class pointer
virtual ~TestObject()
{
printf(" Destroying TestObject %p.\n",
static_cast<void*>(this));
}
virtual void VirtualMemberFunction(int, int*, int&) override
{
printf("override virtual member function is invoked.\n");
}
virtual void VirtualConstMemberFunction(int, int*, int&) const override
{
printf("override virtual const member function is invoked.\n");
}
};
class TestRefObjectBaseA {
public:
int fooA;
// Must return |nsrefcnt| to keep |nsDerivedSafe| happy.
virtual nsrefcnt AddRef() = 0;
virtual nsrefcnt Release() = 0;
};
class TestRefObjectBaseB {
public:
int fooB;
virtual nsrefcnt AddRef() = 0;
virtual nsrefcnt Release() = 0;
};
class TestRefObject final : public TestRefObjectBaseA, public TestRefObjectBaseB {
public:
TestRefObject()
: mRefCount(0)
{
printf(" Creating TestRefObject %p.\n",
static_cast<void*>(this));
}
~TestRefObject()
{
printf(" Destroying TestRefObject %p.\n",
static_cast<void*>(this));
}
nsrefcnt AddRef()
{
++mRefCount;
printf(" AddRef to %d on TestRefObject %p.\n",
mRefCount, static_cast<void*>(this));
return mRefCount;
}
nsrefcnt Release()
{
--mRefCount;
printf(" Release to %d on TestRefObject %p.\n",
mRefCount, static_cast<void*>(this));
if (mRefCount == 0) {
delete const_cast<TestRefObject*>(this);
return 0;
}
return mRefCount;
}
protected:
uint32_t mRefCount;
};
static void CreateTestObject(TestObject **aResult)
{
*aResult = new TestObject();
}
static void CreateTestRefObject(TestRefObject **aResult)
{
(*aResult = new TestRefObject())->AddRef();
}
static void DoSomethingWithTestObject(TestObject *aIn)
{
printf(" Doing something with |TestObject| %p.\n",
static_cast<void*>(aIn));
}
static void DoSomethingWithConstTestObject(const TestObject *aIn)
{
printf(" Doing something with |const TestObject| %p.\n",
static_cast<const void*>(aIn));
}
static void DoSomethingWithTestRefObject(TestRefObject *aIn)
{
printf(" Doing something with |TestRefObject| %p.\n",
static_cast<void*>(aIn));
}
static void DoSomethingWithConstTestRefObject(const TestRefObject *aIn)
{
printf(" Doing something with |const TestRefObject| %p.\n",
static_cast<const void*>(aIn));
}
static void DoSomethingWithTestObjectBaseB(TestObjectBaseB *aIn)
{
printf(" Doing something with |TestObjectBaseB| %p.\n",
static_cast<void*>(aIn));
}
static void DoSomethingWithConstTestObjectBaseB(const TestObjectBaseB *aIn)
{
printf(" Doing something with |const TestObjectBaseB| %p.\n",
static_cast<const void*>(aIn));
}
static void DoSomethingWithTestRefObjectBaseB(TestRefObjectBaseB *aIn)
{
printf(" Doing something with |TestRefObjectBaseB| %p.\n",
static_cast<void*>(aIn));
}
static void DoSomethingWithConstTestRefObjectBaseB(const TestRefObjectBaseB *aIn)
{
printf(" Doing something with |const TestRefObjectBaseB| %p.\n",
static_cast<const void*>(aIn));
}
int main()
{
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj( new TestObject() );
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj( new TestObject() );
printf("Should create one |TestObject| and then destroy one:\n");
pobj = new TestObject();
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
nsAutoArrayPtr<TestObject> pobj( new TestObject[3] );
printf("Should create 5 |TestObject|s and then destroy 3:\n");
pobj = new TestObject[5];
printf("Should destroy 5 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj( new TestRefObject() );
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj( new TestRefObject() );
printf("Should create and AddRef one |TestRefObject| and then Release and destroy one:\n");
pobj = new TestRefObject();
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> p1( new TestRefObject() );
printf("Should AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> p2( p1 );
printf("Should Release twice and destroy one |TestRefObject|:\n");
}
printf("\nTesting equality (with all const-ness combinations):\n");
{
RefPtr<TestRefObject> p1( new TestRefObject() );
RefPtr<TestRefObject> p2( p1 );
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
RefPtr<TestRefObject> p2( p1 );
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2)) ? "OK" : "broken");
}
{
RefPtr<TestRefObject> p1( new TestRefObject() );
const RefPtr<TestRefObject> p2( p1 );
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
const RefPtr<TestRefObject> p2( p1 );
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2)) ? "OK" : "broken");
}
{
RefPtr<TestRefObject> p1( new TestRefObject() );
TestRefObject * p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
TestRefObject * p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
#if 0 /* MSVC++ 6.0 can't be coaxed to accept this */
{
RefPtr<TestRefObject> p1( new TestRefObject() );
TestRefObject * const p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
TestRefObject * const p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
#endif /* Things that MSVC++ 6.0 can't be coaxed to accept */
{
RefPtr<TestRefObject> p1( new TestRefObject() );
const TestRefObject * p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
const TestRefObject * p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
{
RefPtr<TestRefObject> p1( new TestRefObject() );
const TestRefObject * const p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
{
const RefPtr<TestRefObject> p1( new TestRefObject() );
const TestRefObject * const p2 = p1;
printf("equality %s.\n",
((p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1)) ? "OK" : "broken");
}
printf("\nTesting getter_Transfers and getter_AddRefs.\n");
{
nsAutoPtr<TestObject> ptr;
printf("Should create one |TestObject|:\n");
CreateTestObject(getter_Transfers(ptr));
printf("Should destroy one |TestObject|:\n");
}
{
RefPtr<TestRefObject> ptr;
printf("Should create and AddRef one |TestRefObject|:\n");
CreateTestRefObject(getter_AddRefs(ptr));
printf("Should Release and destroy one |TestRefObject|:\n");
}
printf("\nTesting casts and equality tests.\n");
// This comparison is always false, as it should be. The extra parens
// suppress a -Wunreachable-code warning about printf being unreachable.
if (((void*)(TestObject*)0x1000) ==
((void*)(TestObjectBaseB*)(TestObject*)0x1000))
printf("\n\nAll these tests are meaningless!\n\n\n");
{
nsAutoPtr<TestObject> p1(new TestObject());
TestObjectBaseB *p2 = p1;
printf("equality %s.\n",
((static_cast<void*>(p1) != static_cast<void*>(p2)) &&
(p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1))
? "OK" : "broken");
}
{
TestObject *p1 = new TestObject();
nsAutoPtr<TestObjectBaseB> p2(p1);
printf("equality %s.\n",
((static_cast<void*>(p1) != static_cast<void*>(p2)) &&
(p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1))
? "OK" : "broken");
}
{
RefPtr<TestRefObject> p1 = new TestRefObject();
// nsCOMPtr requires a |get| for something like this as well
RefPtr<TestRefObjectBaseB> p2 = p1.get();
printf("equality %s.\n",
((static_cast<void*>(p1) != static_cast<void*>(p2)) &&
(p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1))
? "OK" : "broken");
}
{
RefPtr<TestRefObject> p1 = new TestRefObject();
TestRefObjectBaseB *p2 = p1;
printf("equality %s.\n",
((static_cast<void*>(p1) != static_cast<void*>(p2)) &&
(p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1))
? "OK" : "broken");
}
{
TestRefObject *p1 = new TestRefObject();
RefPtr<TestRefObjectBaseB> p2 = p1;
printf("equality %s.\n",
((static_cast<void*>(p1) != static_cast<void*>(p2)) &&
(p1 == p2) && !(p1 != p2) && (p2 == p1) && !(p2 != p1))
? "OK" : "broken");
}
printf("\nTesting |forget()|.\n");
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj( new TestObject() );
printf("Should do nothing:\n");
nsAutoPtr<TestObject> pobj2( pobj.forget() );
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
nsAutoArrayPtr<TestObject> pobj( new TestObject[3] );
printf("Should do nothing:\n");
nsAutoArrayPtr<TestObject> pobj2( pobj.forget() );
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj( new TestRefObject() );
printf("Should do nothing:\n");
RefPtr<TestRefObject> pobj2( pobj.forget() );
printf("Should destroy one |TestRefObject|:\n");
}
printf("\nTesting construction.\n");
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj(new TestObject());
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
nsAutoArrayPtr<TestObject> pobj(new TestObject[3]);
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj = new TestRefObject();
printf("Should Release and destroy one |TestRefObject|:\n");
}
printf("\nTesting calling of functions (including array access and casts).\n");
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj(new TestObject());
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(pobj);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(pobj);
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
nsAutoArrayPtr<TestObject> pobj(new TestObject[3]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(&pobj[2]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(&pobj[1]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(pobj + 2);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(pobj + 1);
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj = new TestRefObject();
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithTestRefObject(pobj);
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithConstTestRefObject(pobj);
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObject> pobj(new TestObject());
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(pobj);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(pobj);
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
nsAutoArrayPtr<TestObject> pobj(new TestObject[3]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(&pobj[2]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(&pobj[1]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(pobj + 2);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(pobj + 1);
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
RefPtr<TestRefObject> pobj = new TestRefObject();
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithTestRefObjectBaseB(pobj);
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithConstTestRefObjectBaseB(pobj);
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
printf("Should create one |TestObject|:\n");
const nsAutoPtr<TestObject> pobj(new TestObject());
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(pobj);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(pobj);
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
const nsAutoArrayPtr<TestObject> pobj(new TestObject[3]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(&pobj[2]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(&pobj[1]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObject(pobj + 2);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObject(pobj + 1);
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
const RefPtr<TestRefObject> pobj = new TestRefObject();
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithTestRefObject(pobj);
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithConstTestRefObject(pobj);
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
printf("Should create one |TestObject|:\n");
const nsAutoPtr<TestObject> pobj(new TestObject());
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(pobj);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(pobj);
printf("Should destroy one |TestObject|:\n");
}
{
printf("Should create 3 |TestObject|s:\n");
const nsAutoArrayPtr<TestObject> pobj(new TestObject[3]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(&pobj[2]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(&pobj[1]);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithTestObjectBaseB(pobj + 2);
printf("Should do something with one |TestObject|:\n");
DoSomethingWithConstTestObjectBaseB(pobj + 1);
printf("Should destroy 3 |TestObject|s:\n");
}
{
printf("Should create and AddRef one |TestRefObject|:\n");
const RefPtr<TestRefObject> pobj = new TestRefObject();
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithTestRefObjectBaseB(pobj);
printf("Should do something with one |TestRefObject|:\n");
DoSomethingWithConstTestRefObjectBaseB(pobj);
printf("Should Release and destroy one |TestRefObject|:\n");
}
{
int test = 1;
void (TestObjectBaseA::*fPtr)( int, int*, int& ) = &TestObjectBaseA::MemberFunction;
void (TestObjectBaseA::*fVPtr)( int, int*, int& ) = &TestObjectBaseA::VirtualMemberFunction;
void (TestObjectBaseA::*fVCPtr)( int, int*, int& ) const = &TestObjectBaseA::VirtualConstMemberFunction;
printf("Should create one |TestObject|:\n");
nsAutoPtr<TestObjectBaseA> pobj(new TestObject());
printf("Should do something with operator->*:\n");
(pobj->*fPtr)(test, &test, test);
(pobj->*fVPtr)(test, &test, test);
(pobj->*fVCPtr)(test, &test, test);
printf("Should destroy one |TestObject|:\n");
}
return 0;
}
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