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AutoPtrTest.cpp

//
// AutoPtrTest.cpp
//
// $Id: //poco/1.2/Foundation/testsuite/src/AutoPtrTest.cpp#3 $
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "AutoPtrTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Poco/AutoPtr.h"
#include "Poco/Exception.h"


using Poco::AutoPtr;
using Poco::NullPointerException;


namespace
{
      class TestObj
      {
      public:
            TestObj(): _rc(1)
            {
                  ++_count;
            }
                        
            void duplicate()
            {
                  ++_rc;
            }
            
            void release()
            {
                  if (--_rc == 0)
                        delete this;
            }
            
            int rc() const
            {
                  return _rc;
            }
            
            static int count()
            {
                  return _count;
            }
            
      protected:
            ~TestObj()
            {
                  --_count;
            }
            
      private:
            int _rc;
            static int _count;
      };
      
      int TestObj::_count = 0;
}


AutoPtrTest::AutoPtrTest(const std::string& name): CppUnit::TestCase(name)
{
}


AutoPtrTest::~AutoPtrTest()
{
}


void AutoPtrTest::testAutoPtr()
{
      {
            AutoPtr<TestObj> ptr = new TestObj;
            assert (ptr->rc() == 1);
            AutoPtr<TestObj> ptr2 = ptr;
            assert (ptr->rc() == 2);
            ptr2 = new TestObj;
            assert (ptr->rc() == 1);
            AutoPtr<TestObj> ptr3;
            ptr3 = ptr2;
            assert (ptr2->rc() == 2);
            ptr3 = new TestObj;
            assert (ptr2->rc() == 1);
            ptr3 = ptr2;
            assert (ptr2->rc() == 2);
            assert (TestObj::count() > 0);
      }
      assert (TestObj::count() == 0);
}


void AutoPtrTest::testOps()
{
      AutoPtr<TestObj> ptr1;
      assertNull(ptr1.get());
      TestObj* pTO1 = new TestObj;
      TestObj* pTO2 = new TestObj;
      if (pTO2 < pTO1)
      {
            TestObj* pTmp = pTO1;
            pTO1 = pTO2;
            pTO2 = pTmp;
      }
      assert (pTO1 < pTO2);
      ptr1 = pTO1;
      AutoPtr<TestObj> ptr2 = pTO2;
      AutoPtr<TestObj> ptr3 = ptr1;
      AutoPtr<TestObj> ptr4;
      assert (ptr1.get() == pTO1);
      assert (ptr1 == pTO1);
      assert (ptr2.get() == pTO2);
      assert (ptr2 == pTO2);
      assert (ptr3.get() == pTO1);
      assert (ptr3 == pTO1);
      
      assert (ptr1 == pTO1);
      assert (ptr1 != pTO2);
      assert (ptr1 < pTO2);
      assert (ptr1 <= pTO2);
      assert (ptr2 > pTO1);
      assert (ptr2 >= pTO1);
      
      assert (ptr1 == ptr3);
      assert (ptr1 != ptr2);
      assert (ptr1 < ptr2);
      assert (ptr1 <= ptr2);
      assert (ptr2 > ptr1);
      assert (ptr2 >= ptr1);
      
      ptr1 = pTO1;
      ptr2 = pTO2;
      ptr1.swap(ptr2);
      assert (ptr2.get() == pTO1);
      assert (ptr1.get() == pTO2);
            
      try
      {
            assert (ptr4->rc() > 0);
            fail ("must throw NullPointerException");
      }
      catch (NullPointerException&)
      {
      }

      assert (!(ptr4 == ptr1));
      assert (!(ptr4 == ptr2));
      assert (ptr4 != ptr1);
      assert (ptr4 != ptr2);
      
      ptr4 = ptr2;
      assert (ptr4 == ptr2);
      assert (!(ptr4 != ptr2));
      
      assert (!(!ptr1));
      ptr1 = 0;
      assert (!ptr1);
}


void AutoPtrTest::setUp()
{
}


void AutoPtrTest::tearDown()
{
}


CppUnit::Test* AutoPtrTest::suite()
{
      CppUnit::TestSuite* pSuite = new CppUnit::TestSuite("AutoPtrTest");

      CppUnit_addTest(pSuite, AutoPtrTest, testAutoPtr);
      CppUnit_addTest(pSuite, AutoPtrTest, testOps);

      return pSuite;
}

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