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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile: testAutoPtr.cxx,v $
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "kwsysPrivate.h"
#include KWSYS_HEADER(auto_ptr.hxx)
// Work-around CMake dependency scanning limitation. This must
// duplicate the above list of headers.
#if 0
# include "auto_ptr.hxx.in"
#endif
#include <stdio.h>
#define ASSERT(x,y) if (!(x)) { printf("FAIL: " y "\n"); status = 1; }
static int instances = 0;
struct A
{
A() { ++instances; }
~A() { --instances; }
A* self() {return this; }
};
struct B: public A {};
static int function_call(kwsys::auto_ptr<A> a)
{
return a.get()? 1:0;
}
static A* get_A(A& a) { return &a; }
static kwsys::auto_ptr<A> generate_auto_ptr_A()
{
return kwsys::auto_ptr<A>(new A);
}
static kwsys::auto_ptr<B> generate_auto_ptr_B()
{
return kwsys::auto_ptr<B>(new B);
}
int testAutoPtr(int, char*[])
{
int status = 0;
// Keep everything in a subscope so we can detect leaks.
{
kwsys::auto_ptr<A> pa0;
kwsys::auto_ptr<A> pa1(new A());
kwsys::auto_ptr<B> pb1(new B());
kwsys::auto_ptr<B> pb2(new B());
kwsys::auto_ptr<A> pa2(new B());
A* ptr = get_A(*pa1);
ASSERT(ptr == pa1.get(),
"auto_ptr does not return correct object when dereferenced");
ptr = pa1->self();
ASSERT(ptr == pa1.get(),
"auto_ptr does not return correct pointer from operator->");
A* before = pa0.get();
pa0.reset(new A());
ASSERT(pa0.get() && pa0.get() != before,
"auto_ptr empty after reset(new A())");
before = pa0.get();
pa0.reset(new B());
ASSERT(pa0.get() && pa0.get() != before,
"auto_ptr empty after reset(new B())");
delete pa0.release();
ASSERT(!pa0.get(), "auto_ptr holds an object after release()");
kwsys::auto_ptr<A> pa3(pb1);
ASSERT(!pb1.get(),
"auto_ptr full after being used to construct another");
ASSERT(pa3.get(),
"auto_ptr empty after construction from another");
{
kwsys::auto_ptr<A> pa;
pa = pa3;
ASSERT(!pa3.get(),
"auto_ptr full after assignment to another");
ASSERT(pa.get(),
"auto_ptr empty after assignment from another");
}
{
kwsys::auto_ptr<A> pa;
pa = pb2;
ASSERT(!pb2.get(),
"auto_ptr full after assignment to compatible");
ASSERT(pa.get(),
"auto_ptr empty after assignment from compatible");
}
{
int receive = function_call(pa2);
ASSERT(receive,
"auto_ptr did not receive ownership in called function");
ASSERT(!pa2.get(),
"auto_ptr did not release ownership to called function");
}
{
int received = function_call(generate_auto_ptr_A());
ASSERT(received,
"auto_ptr in called function did not take ownership "
"from factory function");
}
#if 0
// Is this allowed by the standard?
{
int received = function_call(generate_auto_ptr_B());
ASSERT(received,
"auto_ptr in called function did not take ownership "
"from factory function with conversion");
}
#endif
{
kwsys::auto_ptr<A> pa(generate_auto_ptr_A());
ASSERT(pa.get(),
"auto_ptr empty after construction from factory function");
}
{
kwsys::auto_ptr<A> pa;
pa = generate_auto_ptr_A();
ASSERT(pa.get(),
"auto_ptr empty after assignment from factory function");
}
{
kwsys::auto_ptr<A> pa(generate_auto_ptr_B());
ASSERT(pa.get(),
"auto_ptr empty after construction from compatible factory function");
}
{
kwsys::auto_ptr<A> pa;
pa = generate_auto_ptr_B();
ASSERT(pa.get(),
"auto_ptr empty after assignment from compatible factory function");
}
}
ASSERT(instances == 0, "auto_ptr leaked an object");
return status;
}
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