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4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
325 lines
8.3 KiB
C++
325 lines
8.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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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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// 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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#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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wxDECLARE_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 its 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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// Test weak reference to an incomplete type, this should work if the type is
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// fully defined before it is used (but currently doesn't, see #11916)
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struct ForwardDeclaredClass;
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wxWeakRef<ForwardDeclaredClass> g_incompleteWeakRef;
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struct ForwardDeclaredClass : wxEvtHandler { };
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// A incomplete class that would be defined in other compilation units
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struct IncompleteClass;
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void WeakRefTestCase::DeclareTest()
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{
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{
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// Not initializing or initializing with nullptr should work too
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wxWeakRef<wxEvtHandler> wroDef;
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wxWeakRef<wxEvtHandler> wro0(nullptr);
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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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// This test requires a working dynamic_cast<>
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#ifndef wxNO_RTTI
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{
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ForwardDeclaredClass fdc;
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g_incompleteWeakRef = &fdc;
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CPPUNIT_ASSERT( g_incompleteWeakRef );
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}
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CPPUNIT_ASSERT( !g_incompleteWeakRef );
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#endif // RTTI enabled
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{
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// Construction of a wxWeakRef to an incomplete class should be fine
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wxWeakRef<IncompleteClass> p;
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// Copying should be also OK
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wxCLANG_WARNING_SUPPRESS(self-assign-overloaded)
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p = p;
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wxCLANG_WARNING_RESTORE(self-assign-overloaded)
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// Assigning a raw pointer should cause compile error
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#ifdef TEST_INVALID_INCOMPLETE_WEAKREF
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p = static_cast<IncompleteClass*>(0);
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#endif
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// Releasing should be OK
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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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// Explicitly resetting should work too
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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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wro1 = nullptr;
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wro2 = nullptr;
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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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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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