tests/weakref/evtconnection.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/weakref/evtconnection.cpp
   3 // Purpose:     wxWeakRef<T> unit test
   4 // Author:      Arne Steinarson
   5 // Created:     2008-01-10
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2007 Arne Steinarson
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/wx.h"
  22 #endif // WX_PRECOMP
  23
  24 #include "wx/event.h"
  25 #include "wx/weakref.h"
  26
  27 static int gs_value = 0; // Increased by 1 by first object and 0x10000 by 2nd object
  28
  29 static wxObject *gs_psrc1;
  30 static wxObject *gs_psrc2;
  31
  32 // We need some event types
  33 const wxEventType wxEVT_TEST = wxNewEventType(),
  34                   wxEVT_TEST1 = wxNewEventType(),
  35                   wxEVT_TEST2 = wxNewEventType();
  36
  37 class wxTestEvent : public wxEvent
  38 {
  39 public:
  40     wxTestEvent(wxEventType type = wxEVT_TEST) : wxEvent(0, type) { }
  41     virtual wxEvent *Clone() const { return new wxTestEvent(GetEventType()); }
  42 };
  43
  44 class wxTestSink : public wxEvtHandler
  45 {
  46 public:
  47     void OnTestEvent(wxEvent& evt)
  48     {
  49         if ( evt.GetEventObject() == gs_psrc1 )
  50             gs_value += 1;
  51         else if ( evt.GetEventObject() == gs_psrc2 )
  52             gs_value += 0x10000;
  53     }
  54
  55     void OnTestEvent1(wxEvent& )
  56     {
  57         gs_value += 0x00100;
  58     }
  59
  60     void OnTestEvent2(wxEvent&)
  61     {
  62         gs_value += 0x01000000;
  63     }
  64 };
  65
  66
  67
  68 // --------------------------------------------------------------------------
  69 // test class
  70 // --------------------------------------------------------------------------
  71
  72 class EvtConnectionTestCase : public CppUnit::TestCase
  73 {
  74 public:
  75     EvtConnectionTestCase() {}
  76
  77 private:
  78     CPPUNIT_TEST_SUITE( EvtConnectionTestCase );
  79         CPPUNIT_TEST( SinkTest );
  80         CPPUNIT_TEST( SourceDestroyTest );
  81         CPPUNIT_TEST( MultiConnectionTest );
  82     CPPUNIT_TEST_SUITE_END();
  83
  84     void SinkTest();
  85     void SourceDestroyTest();
  86     void MultiConnectionTest();
  87
  88     DECLARE_NO_COPY_CLASS(EvtConnectionTestCase)
  89 };
  90
  91 // register in the unnamed registry so that these tests are run by default
  92 CPPUNIT_TEST_SUITE_REGISTRATION( EvtConnectionTestCase );
  93
  94 // also include in it's own registry so that these tests can be run alone
  95 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( EvtConnectionTestCase, "EvtConnectionTestCase" );
  96
  97
  98 // Helpers
  99 void DoConnect( wxEvtHandler& eh1, wxEvtHandler& eh2, wxTestSink& ts ){
 100     eh1.Connect(wxEVT_TEST, (wxObjectEventFunction)&wxTestSink::OnTestEvent,
 101                 NULL, &ts);
 102     eh2.Connect(wxEVT_TEST, (wxObjectEventFunction) &wxTestSink::OnTestEvent,
 103                 NULL, &ts);
 104 }
 105
 106 void DoDisconnect( wxEvtHandler& eh1, wxEvtHandler& eh2, wxTestSink& ts ){
 107     eh1.Disconnect(wxEVT_TEST, (wxObjectEventFunction) &wxTestSink::OnTestEvent,
 108                 NULL, &ts);
 109     eh2.Disconnect(wxEVT_TEST, (wxObjectEventFunction) &wxTestSink::OnTestEvent,
 110                 NULL, &ts);
 111 }
 112
 113
 114 void EvtConnectionTestCase::SinkTest()
 115 {
 116     // Let the sink be destroyed before the sources
 117
 118     // An event used below
 119     wxTestEvent evt;
 120
 121     // Connect two event handlers to one sink
 122     wxEvtHandler eh1, eh2;
 123     gs_psrc1 = &eh1;
 124     gs_psrc2 = &eh2;
 125
 126     {
 127         wxTestSink ts;
 128         CPPUNIT_ASSERT( !ts.GetFirst() );
 129         DoConnect(eh1, eh2, ts);
 130
 131         DoDisconnect(eh1, eh2, ts);
 132
 133         DoConnect(eh1, eh2, ts);
 134
 135         // Fire events
 136         evt.SetEventObject(&eh1);
 137         eh1.ProcessEvent(evt);
 138         evt.SetEventObject(&eh2);
 139         eh2.ProcessEvent(evt);
 140
 141         // Make sure they were processed correctly
 142         CPPUNIT_ASSERT_EQUAL( 0x00010001, gs_value );
 143     }
 144
 145     // Fire events again, should be no sink connected now
 146     gs_value = 0;
 147     evt.SetEventObject(&eh1);
 148     eh1.ProcessEvent( evt );
 149     evt.SetEventObject(&eh2);
 150     eh2.ProcessEvent( evt );
 151
 152     // Make sure no processing happened
 153     CPPUNIT_ASSERT_EQUAL( 0, gs_value );
 154 }
 155
 156 void EvtConnectionTestCase::SourceDestroyTest()
 157 {
 158     // Let the sources be destroyed before the sink
 159     wxTestSink ts;
 160     wxTestEvent evt;
 161     {
 162         wxEvtHandler eh1;
 163         {
 164             CPPUNIT_ASSERT( !ts.GetFirst() );
 165
 166             // Connect two event handlers to one sink
 167             wxEvtHandler eh2;
 168             gs_psrc1 = &eh1;
 169             gs_psrc2 = &eh2;
 170             DoConnect( eh1, eh2, ts );
 171
 172             // Fire events
 173             gs_value = 0;
 174             evt.SetEventObject(&eh1);
 175             eh1.ProcessEvent( evt );
 176             evt.SetEventObject(&eh2);
 177             eh2.ProcessEvent( evt );
 178
 179             // Make sure they were processed correctly
 180             CPPUNIT_ASSERT_EQUAL( 0x00010001, gs_value );
 181         }
 182
 183         gs_value = 0;
 184         evt.SetEventObject(&eh1);
 185         eh1.ProcessEvent( evt );
 186
 187         // Make sure still connected
 188         CPPUNIT_ASSERT_EQUAL( 0x00000001, gs_value );
 189     }
 190     CPPUNIT_ASSERT( !ts.GetFirst() );
 191 }
 192
 193 void EvtConnectionTestCase::MultiConnectionTest()
 194 {
 195     // events used below
 196     wxTestEvent evt;
 197     wxTestEvent evt1(wxEVT_TEST1);
 198     wxTestEvent evt2(wxEVT_TEST2);
 199
 200     // One source
 201     wxEvtHandler eh1;
 202     evt.SetEventObject(&eh1);
 203     gs_psrc1 = NULL;
 204     gs_psrc2 = &eh1;
 205
 206     {
 207         // ...and one sink
 208         wxTestSink ts;
 209
 210         eh1.Connect(wxEVT_TEST, (wxObjectEventFunction)&wxTestSink::OnTestEvent,
 211                     NULL, &ts);
 212         eh1.Connect(wxEVT_TEST1, (wxObjectEventFunction)&wxTestSink::OnTestEvent1,
 213                     NULL, &ts);
 214         eh1.Connect(wxEVT_TEST2, (wxObjectEventFunction)&wxTestSink::OnTestEvent2,
 215                     NULL, &ts);
 216
 217         // Generate events
 218         gs_value = 0;
 219         eh1.ProcessEvent(evt);
 220         eh1.ProcessEvent(evt1);
 221         eh1.ProcessEvent(evt2);
 222         CPPUNIT_ASSERT( gs_value==0x01010100 );
 223
 224         {
 225             // Declare weak references to the objects (using same list)
 226             wxEvtHandlerRef re(&eh1), rs(&ts);
 227         }
 228         // And now destroyed
 229
 230         eh1.Disconnect(wxEVT_TEST, (wxObjectEventFunction)&wxTestSink::OnTestEvent,
 231                        NULL, &ts);
 232         eh1.ProcessEvent(evt);
 233         eh1.ProcessEvent(evt1);
 234         eh1.ProcessEvent(evt2);
 235         CPPUNIT_ASSERT_EQUAL( 0x02010200, gs_value );
 236     }
 237
 238     // No connection should be left now
 239     gs_value = 0;
 240     eh1.ProcessEvent(evt);
 241     eh1.ProcessEvent(evt1);
 242     eh1.ProcessEvent(evt2);
 243
 244     // Nothing should have been done
 245     CPPUNIT_ASSERT_EQUAL( 0, gs_value );
 246 }
 247