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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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 <rtl/ref.hxx>
#include <sal/types.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>
namespace rtl_ref
{
namespace {
class MoveTestClass
{
private:
bool m_bIncFlag;
long m_nRef;
public:
MoveTestClass(): m_bIncFlag(false), m_nRef(0) { }
// There should never be more than two references to this class as it
// is used as a test class for move functions. One reference being the
// original reference and the second being the test reference
void acquire()
{
if(m_bIncFlag)
{
++m_nRef;
m_bIncFlag = false;
}
else
CPPUNIT_FAIL("RC was incremented when in should not have been");
}
void release() { --m_nRef; }
long use_count() { return m_nRef; }
void set_inc_flag() { m_bIncFlag = true; }
};
}
static rtl::Reference< MoveTestClass > get_reference( MoveTestClass* pcTestClass )
{
// constructor will increment the reference count
pcTestClass->set_inc_flag();
rtl::Reference< MoveTestClass > tmp(pcTestClass);
return tmp;
}
class TestReferenceRefCounting : public CppUnit::TestFixture
{
void testMove()
{
MoveTestClass cTestClass;
// constructor will increment the reference count
cTestClass.set_inc_flag();
rtl::Reference< MoveTestClass > test1( &cTestClass );
// move should not increment the reference count
rtl::Reference< MoveTestClass > test2( std::move(test1) );
CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
static_cast<long>(1), test2->use_count());
// test1 now contains a null pointer
CPPUNIT_ASSERT_MESSAGE("!test1.is()",
!test1.is()); // NOLINT(bugprone-use-after-move)
// function return should move the reference
test2 = get_reference( &cTestClass );
CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
static_cast<long>(1), test2->use_count());
// normal copy
test2->set_inc_flag();
test1 = test2;
CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 2",
static_cast<long>(2), test2->use_count());
// use count should decrement
test2 = rtl::Reference< MoveTestClass >();
CPPUNIT_ASSERT_EQUAL_MESSAGE("test1.use_count() == 1",
static_cast<long>(1), test1->use_count());
// move of a null pointer should not cause an error
test1 = std::move(test2);
CPPUNIT_ASSERT_MESSAGE("!test1.is()",
!test1.is());
CPPUNIT_ASSERT_MESSAGE("!test2.is()",
!test2.is()); // NOLINT(bugprone-use-after-move)
CPPUNIT_ASSERT_EQUAL_MESSAGE("cTestClass.use_count() == 0",
static_cast<long>(0), cTestClass.use_count());
}
CPPUNIT_TEST_SUITE(TestReferenceRefCounting);
CPPUNIT_TEST(testMove);
CPPUNIT_TEST_SUITE_END();
};
} // namespace rtl_ref
CPPUNIT_TEST_SUITE_REGISTRATION(rtl_ref::TestReferenceRefCounting);
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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