20_utilities: New directory.

2000-06-19  Branko Cibej  <branko.cibej@hermes.si>

        * testsuite/20_utilities: New directory.
        * testsuite/20_utilities/auto_ptr.cc: New file.

From-SVN: r34599
This commit is contained in:
Branko Cibej 2000-06-19 19:58:53 +00:00 committed by Benjamin Kosnik
parent 437fa02616
commit 3ef9fe6118

View File

@ -0,0 +1,288 @@
// Copyright (C) 2000 Free Software Foundation
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 20.4.5 Template class auto_ptr [lib.auto.ptr]
#include <memory>
#ifdef DEBUG_ASSERT
# include <assert.h>
#endif
struct A
{
A() { ++ctor_count; }
virtual ~A() { ++dtor_count; }
static long ctor_count;
static long dtor_count;
};
long A::ctor_count = 0;
long A::dtor_count = 0;
struct B : A
{
B() { ++ctor_count; }
virtual ~B() { ++dtor_count; }
static long ctor_count;
static long dtor_count;
};
long B::ctor_count = 0;
long B::dtor_count = 0;
struct reset_count_struct
{
~reset_count_struct()
{
A::ctor_count = 0;
A::dtor_count = 0;
B::ctor_count = 0;
B::dtor_count = 0;
}
};
// 20.4.5.1 auto_ptr constructors [lib.auto.ptr.cons]
// Construction from pointer
bool test01()
{
reset_count_struct reset;
bool test = true;
std::auto_ptr<A> A_default;
test &= A_default.get() == 0;
test &= A::ctor_count == 0;
test &= A::dtor_count == 0;
test &= B::ctor_count == 0;
test &= B::dtor_count == 0;
std::auto_ptr<A> A_from_A(new A);
test &= A_from_A.get() != 0;
test &= A::ctor_count == 1;
test &= A::dtor_count == 0;
test &= B::ctor_count == 0;
test &= B::dtor_count == 0;
std::auto_ptr<A> A_from_B(new B);
test &= A_from_B.get() != 0;
test &= A::ctor_count == 2;
test &= A::dtor_count == 0;
test &= B::ctor_count == 1;
test &= B::dtor_count == 0;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// Construction from std::auto_ptr
bool test02()
{
reset_count_struct reset;
bool test = true;
std::auto_ptr<A> A_from_A(new A);
std::auto_ptr<B> B_from_B(new B);
std::auto_ptr<A> A_from_ptr_A(A_from_A);
std::auto_ptr<A> A_from_ptr_B(B_from_B);
test &= A_from_A.get() == 0;
test &= B_from_B.get() == 0;
test &= A_from_ptr_A.get() != 0;
test &= A_from_ptr_B.get() != 0;
test &= A::ctor_count == 2;
test &= A::dtor_count == 0;
test &= B::ctor_count == 1;
test &= B::dtor_count == 0;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// Assignment from std::auto_ptr
bool test03()
{
reset_count_struct reset;
bool test = true;
std::auto_ptr<A> A_from_ptr_A;
std::auto_ptr<A> A_from_ptr_B;
std::auto_ptr<A> A_from_A(new A);
std::auto_ptr<B> B_from_B(new B);
A_from_ptr_A = A_from_A;
A_from_ptr_B = B_from_B;
test &= A_from_A.get() == 0;
test &= B_from_B.get() == 0;
test &= A_from_ptr_A.get() != 0;
test &= A_from_ptr_B.get() != 0;
test &= A::ctor_count == 2;
test &= A::dtor_count == 0;
test &= B::ctor_count == 1;
test &= B::dtor_count == 0;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// Destruction
bool test04()
{
reset_count_struct reset;
bool test = true;
{/*lifetine scope*/
std::auto_ptr<A> A_from_A(new A);
std::auto_ptr<A> A_from_B(new B);
std::auto_ptr<B> B_from_B(new B);
}/*destructors called here*/
test &= A::ctor_count == 3;
test &= A::dtor_count == 3;
test &= B::ctor_count == 2;
test &= B::dtor_count == 2;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// Class member construction/destruction
template <typename T>
class pimpl
{
public:
pimpl() : p_impl(new T) {}
private:
std::auto_ptr<T> p_impl;
};
bool test05()
{
bool test = true;
reset_count_struct reset;
pimpl<A>();
pimpl<B>();
test &= A::ctor_count == 2;
test &= A::dtor_count == 2;
test &= B::ctor_count == 1;
test &= B::dtor_count == 1;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// 20.4.5.2 auto_ptr members [lib.auto.ptr.members]
// Member access
bool test06()
{
reset_count_struct reset;
bool test = true;
std::auto_ptr<A> A_from_A(new A);
std::auto_ptr<A> A_from_A_ptr(A_from_A.release());
test &= A_from_A.get() == 0;
test &= A_from_A_ptr.get() != 0;
test &= A_from_A->ctor_count == 1;
test &= (*A_from_A).dtor_count == 0;
A* A_ptr = A_from_A_ptr.get();
A_from_A_ptr.reset(A_ptr);
test &= A_from_A_ptr.get() == A_ptr;
test &= A_from_A_ptr->ctor_count == 1;
test &= (*A_from_A_ptr).dtor_count == 0;
A_from_A_ptr.reset(new A);
test &= A_from_A_ptr.get() != A_ptr;
test &= A_from_A_ptr->ctor_count == 2;
test &= (*A_from_A_ptr).dtor_count == 1;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// 20.4.5.3 auto_ptr conversions [lib.auto.ptr.conv]
// Parameters and return values
template <typename T>
static std::auto_ptr<T> source()
{
return std::auto_ptr<T>(new T);
}
template <typename T>
static void drain(std::auto_ptr<T>)
{}
bool test07()
{
bool test = true;
reset_count_struct reset;
drain(source<A>());
drain<A>(source<B>());
drain(source<B>());
test &= A::ctor_count == 3;
test &= A::dtor_count == 3;
test &= B::ctor_count == 2;
test &= B::dtor_count == 2;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
int main()
{
bool test = true;
test &= test01();
test &= test02();
test &= test03();
test &= test04();
test &= test05();
test &= test06();
test &= test07();
return test ? 0 : 1;
}