improvements to wxWeakRef and related classes
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51187 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
281
tests/weakref/weakref.cpp
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281
tests/weakref/weakref.cpp
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///////////////////////////////////////////////////////////////////////////////
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// Name: tests/weakref/weakref.cpp
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// Purpose: wxWeakRef<T> unit test
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// Author: Arne Steinarson
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// Created: 2008-01-10
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// RCS-ID: $Id$
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// Copyright: (c) 2007 Arne Steinarson
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif // WX_PRECOMP
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#include "wx/event.h"
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#include "wx/weakref.h"
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// A statically trackable derived wxObject
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class wxObjectTrackable : public wxObject, public wxTrackable
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{
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public:
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// Test member access
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void TestFunc(){ }
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// Make sure this does not clash with wxTrackableBase method
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int GetFirst() { return 0; }
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};
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// --------------------------------------------------------------------------
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// test class
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// --------------------------------------------------------------------------
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class WeakRefTestCase : public CppUnit::TestCase
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{
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public:
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WeakRefTestCase() {}
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private:
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CPPUNIT_TEST_SUITE( WeakRefTestCase );
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CPPUNIT_TEST( DeclareTest );
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CPPUNIT_TEST( AssignTest );
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CPPUNIT_TEST( AssignWeakRefTest );
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CPPUNIT_TEST( MultiAssignTest );
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CPPUNIT_TEST( CleanupTest );
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CPPUNIT_TEST( DeleteTest );
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#ifdef HAVE_DYNAMIC_CAST
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CPPUNIT_TEST( DynamicRefTest );
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#endif
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CPPUNIT_TEST_SUITE_END();
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void DeclareTest();
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void AssignTest();
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void AssignWeakRefTest();
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void MultiAssignTest();
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void CleanupTest();
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void DeleteTest();
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#ifdef HAVE_DYNAMIC_CAST
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void DynamicRefTest();
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#endif
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DECLARE_NO_COPY_CLASS(WeakRefTestCase)
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( WeakRefTestCase );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( WeakRefTestCase, "WeakRefTestCase" );
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void WeakRefTestCase::DeclareTest()
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{
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{
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wxObject o; // Should not work
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wxEvtHandler eh;
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wxObjectTrackable ot;
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// Test declare when T is wxObject
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// wxWeakRef<wxObject> wro1(&o); // Gives compile time failure
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wxWeakRef<wxEvtHandler> wro2(&eh);
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wxWeakRef<wxObjectTrackable> wro3(&ot);
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CPPUNIT_ASSERT( wro2.get() == &eh );
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CPPUNIT_ASSERT( wro3.get() == &ot );
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// Test accessing wxObject members
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CPPUNIT_ASSERT( !wro2->GetRefData() );
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CPPUNIT_ASSERT( !wro3->GetRefData() );
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wxWeakRef<wxEvtHandler> wreh(&eh);
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wxWeakRef<wxObjectTrackable> wrot(&ot);
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CPPUNIT_ASSERT( wreh.get() == &eh );
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CPPUNIT_ASSERT( wrot.get() == &ot );
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}
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}
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void WeakRefTestCase::AssignTest()
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{
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wxWeakRef<wxEvtHandler> wro1;
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wxWeakRef<wxObjectTrackable> wro2;
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{ // Scope for object destruction
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wxEvtHandler eh;
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wxObjectTrackable ot;
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wro1 = &eh;
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wro2 = &ot;
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CPPUNIT_ASSERT( wro1.get() == &eh );
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CPPUNIT_ASSERT( wro2.get() == &ot );
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}
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// Should be reset now
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CPPUNIT_ASSERT( !wro1 );
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CPPUNIT_ASSERT( !wro2 );
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}
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void WeakRefTestCase::AssignWeakRefTest()
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{
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// Test declare when T is wxObject
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wxWeakRef<wxEvtHandler> wro1;
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wxWeakRef<wxObjectTrackable> wro2;
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{ // Scope for object destruction
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wxEvtHandler eh;
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wxObjectTrackable ot;
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wxWeakRef<wxEvtHandler> wro3;
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wxWeakRef<wxObjectTrackable> wro4;
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wro1 = &eh;
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wro2 = &ot;
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wro3 = wro1;
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wro4 = wro2;
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CPPUNIT_ASSERT( wro1.get() == &eh );
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CPPUNIT_ASSERT( wro2.get() == &ot );
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CPPUNIT_ASSERT( wro3.get() == &eh );
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CPPUNIT_ASSERT( wro4.get() == &ot );
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wro4.Release();
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CPPUNIT_ASSERT( !wro4.get() );
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}
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// Should be reset now
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CPPUNIT_ASSERT( !wro1 );
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CPPUNIT_ASSERT( !wro2 );
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}
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void WeakRefTestCase::MultiAssignTest()
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{
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// Object is tracked by several refs
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wxEvtHandler *peh = new wxEvtHandler;
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// Test declare when T is wxObject
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wxWeakRef<wxEvtHandler> wro1(peh);
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wxWeakRef<wxEvtHandler> wro2(peh);
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wxObjectTrackable *pot = new wxObjectTrackable;
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wxWeakRef<wxObjectTrackable> wro3 = pot;
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wxWeakRef<wxObjectTrackable> wro4 = pot;
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CPPUNIT_ASSERT( wro1.get() == peh );
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CPPUNIT_ASSERT( wro2.get() == peh );
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CPPUNIT_ASSERT( wro3.get() == pot );
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CPPUNIT_ASSERT( wro4.get() == pot );
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delete peh;
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delete pot;
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// Should be reset now
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CPPUNIT_ASSERT( !wro1 );
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CPPUNIT_ASSERT( !wro2 );
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CPPUNIT_ASSERT( !wro3 );
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CPPUNIT_ASSERT( !wro4 );
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}
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void WeakRefTestCase::CleanupTest()
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{
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// Make sure that trackable objects have no left over tracker nodes after use.
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// This time the references goes out of scope before the objects.
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wxEvtHandler eh;
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wxObjectTrackable ots;
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wxObjectTrackable otd;
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{ // Scope for object destruction
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wxWeakRef<wxEvtHandler> wro1;
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wxWeakRef<wxEvtHandler> wro2;
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wxWeakRef<wxObjectTrackable> wro3;
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wxWeakRef<wxObjectTrackable> wro4;
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wro1 = &eh;
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wro2 = &eh; // Has two tracker nodes now
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wro3 = &ots;
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wro4 = &otd;
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// Access members of reffed object
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wro3->TestFunc();
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CPPUNIT_ASSERT( eh.GetFirst()==&wro2 );
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CPPUNIT_ASSERT( ots.wxTrackable::GetFirst()==&wro3 );
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CPPUNIT_ASSERT( otd.wxTrackable::GetFirst()==&wro4 );
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}
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// Should be reset now
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CPPUNIT_ASSERT( !eh.GetFirst() );
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CPPUNIT_ASSERT( !ots.wxTrackable::GetFirst() );
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CPPUNIT_ASSERT( !otd.wxTrackable::GetFirst() );
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}
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void WeakRefTestCase::DeleteTest()
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{
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// Object is tracked by several refs
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wxEvtHandler *peh = new wxEvtHandler;
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// Declared derived type of object and test deleting it
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wxEvtHandlerRef wre(peh);
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wxWeakRef<wxEvtHandler> wro(peh);
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// test size of references (see that it has selected right base class)
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#ifdef HAVE_PARTIAL_SPECIALIZATION
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CPPUNIT_ASSERT_EQUAL( sizeof(void*)*3, sizeof(wre) );
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CPPUNIT_ASSERT_EQUAL( sizeof(void*)*4, sizeof(wro) );
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#else
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CPPUNIT_ASSERT_EQUAL( sizeof(void*)*3, sizeof(wre) );
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CPPUNIT_ASSERT_EQUAL( sizeof(void*)*3, sizeof(wro) );
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#endif
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CPPUNIT_ASSERT( wre.get() == peh );
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CPPUNIT_ASSERT( wro.get() == peh );
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delete wre.get();
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CPPUNIT_ASSERT( !wre );
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CPPUNIT_ASSERT( !wro );
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}
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#ifdef HAVE_DYNAMIC_CAST
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void WeakRefTestCase::DynamicRefTest()
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{
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wxWeakRefDynamic<wxEvtHandler> wro1;
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wxWeakRefDynamic<wxObjectTrackable> wro2;
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wxWeakRefDynamic<wxObjectTrackable> wro3;
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{ // Scope for object destruction
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{
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wxEvtHandler eh;
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wro1 = &eh;
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}
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CPPUNIT_ASSERT( !wro1 );
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wxObjectTrackable otd1;
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wxObjectTrackable otd2;
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wro2 = &otd1;
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wro3 = &otd2;
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CPPUNIT_ASSERT( wro2.get() == &otd1 );
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CPPUNIT_ASSERT( wro3.get() == &otd2 );
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wro3 = wro2;
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CPPUNIT_ASSERT( wro2.get() == &otd1 );
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CPPUNIT_ASSERT( wro3.get() == &otd1 );
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}
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// Should be reset now
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CPPUNIT_ASSERT( !wro2 );
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CPPUNIT_ASSERT( !wro3 );
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}
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#endif // HAVE_DYNAMIC_CAST
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