113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <rtl/ref.hxx>
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#include <cppunit/TestFixture.h>
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#include <cppunit/extensions/HelperMacros.h>
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namespace rtl_ref
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{
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namespace {
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class MoveTestClass
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{
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private:
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bool m_bIncFlag;
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long m_nRef;
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public:
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MoveTestClass(): m_bIncFlag(false), m_nRef(0) { }
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// There should never be more than two references to this class as it
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// is used as a test class for move functions. One reference being the
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// original reference and the second being the test reference
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void acquire()
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{
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if(m_bIncFlag)
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{
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++m_nRef;
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m_bIncFlag = false;
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}
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else
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CPPUNIT_FAIL("RC was incremented when in should not have been");
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}
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void release() { --m_nRef; }
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long use_count() { return m_nRef; }
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void set_inc_flag() { m_bIncFlag = true; }
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};
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}
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static rtl::Reference< MoveTestClass > get_reference( MoveTestClass* pcTestClass )
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{
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// constructor will increment the reference count
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pcTestClass->set_inc_flag();
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rtl::Reference< MoveTestClass > tmp(pcTestClass);
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return tmp;
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}
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class TestReferenceRefCounting : public CppUnit::TestFixture
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{
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void testMove()
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{
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MoveTestClass cTestClass;
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// constructor will increment the reference count
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cTestClass.set_inc_flag();
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rtl::Reference< MoveTestClass > test1( &cTestClass );
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// move should not increment the reference count
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rtl::Reference< MoveTestClass > test2( std::move(test1) );
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CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
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static_cast<long>(1), test2->use_count());
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// test1 now contains a null pointer
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CPPUNIT_ASSERT_MESSAGE("!test1.is()",
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!test1.is()); // NOLINT(bugprone-use-after-move)
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// function return should move the reference
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test2 = get_reference( &cTestClass );
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CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 1",
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static_cast<long>(1), test2->use_count());
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// normal copy
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test2->set_inc_flag();
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test1 = test2;
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CPPUNIT_ASSERT_EQUAL_MESSAGE("test2.use_count() == 2",
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static_cast<long>(2), test2->use_count());
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// use count should decrement
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test2 = rtl::Reference< MoveTestClass >();
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CPPUNIT_ASSERT_EQUAL_MESSAGE("test1.use_count() == 1",
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static_cast<long>(1), test1->use_count());
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// move of a null pointer should not cause an error
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test1 = std::move(test2);
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CPPUNIT_ASSERT_MESSAGE("!test1.is()",
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!test1.is());
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CPPUNIT_ASSERT_MESSAGE("!test2.is()",
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!test2.is()); // NOLINT(bugprone-use-after-move)
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CPPUNIT_ASSERT_EQUAL_MESSAGE("cTestClass.use_count() == 0",
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static_cast<long>(0), cTestClass.use_count());
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}
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CPPUNIT_TEST_SUITE(TestReferenceRefCounting);
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CPPUNIT_TEST(testMove);
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CPPUNIT_TEST_SUITE_END();
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};
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} // namespace rtl_ref
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CPPUNIT_TEST_SUITE_REGISTRATION(rtl_ref::TestReferenceRefCounting);
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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