greenplumn CAutoPTest 源码
greenplumn CAutoPTest 代码
文件路径：/src/backend/gporca/libgpos/server/src/unittest/gpos/common/CAutoPTest.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008 Greenplum, Inc.
//
// @filename:
// CAutoPTest.cpp
//
// @doc:
// Tests for CAutoP
//---------------------------------------------------------------------------
#include "unittest/gpos/common/CAutoPTest.h"
#include "gpos/base.h"
#include "gpos/common/CAutoP.h"
#include "gpos/memory/CAutoMemoryPool.h"
#include "gpos/test/CUnittest.h"
using namespace gpos;
//---------------------------------------------------------------------------
// @function:
// CAutoP::EresUnittest
//
// @doc:
// Unittest for auto pointers
//
//---------------------------------------------------------------------------
GPOS_RESULT
CAutoPTest::EresUnittest()
{
CUnittest rgut[] = {GPOS_UNITTEST_FUNC(CAutoPTest::EresUnittest_Basics)};
return CUnittest::EresExecute(rgut, GPOS_ARRAY_SIZE(rgut));
}
//---------------------------------------------------------------------------
// @function:
// CAutoPTest::EresUnittest_Basics
//
// @doc:
// Various basic operations
//
//---------------------------------------------------------------------------
GPOS_RESULT
CAutoPTest::EresUnittest_Basics()
{
// create memory pool
CAutoMemoryPool amp;
CMemoryPool *mp = amp.Pmp();
// assignment
CAutoP<CHAR> asz;
CHAR *sz = GPOS_NEW(mp) CHAR;
asz = sz;
CAutoP<CHAR> asz2;
CAutoP<CHAR> asz3;
CHAR *sz2 = GPOS_NEW(mp) CHAR;
*sz2 = '\0';
asz2 = sz2;
// default assignment
asz3 = asz2;
// accessor
#ifdef GPOS_DEBUG
CHAR *szBack = asz3.Value();
GPOS_ASSERT(szBack == sz2);
#endif // GPOS_DEBUG
// deref
GPOS_ASSERT(*sz2 == *asz3);
// wipe out asz2 to prevent double free
asz2 = nullptr;
// unhooking of object
GPOS_DELETE(asz3.Reset());
CElem *pelem = GPOS_NEW(mp) CElem;
pelem->m_ul = 3;
CAutoP<CElem> aelem;
aelem = pelem;
// deref
GPOS_ASSERT(pelem->m_ul == aelem->m_ul);
// c'tor
CAutoP<CHAR> asz4(GPOS_NEW(mp) CHAR);
*(asz4.Value()) = 'a';
return GPOS_OK;
}
// EOF
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