tests/misc/misctests.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/misc/misctests.cpp
   3 // Purpose:     test miscellaneous stuff
   4 // Author:      Peter Most, Vadim Zeitlin
   5 // Created:     2008-07-10
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Peter Most
   8 //              (c) 2009 Vadim Zeitlin
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ----------------------------------------------------------------------------
  12 // headers
  13 // ----------------------------------------------------------------------------
  14
  15 #include "testprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #include "wx/defs.h"
  22
  23 // just some classes using wxRTTI for wxStaticCast() test
  24 #include "wx/tarstrm.h"
  25 #include "wx/zipstrm.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // test class
  29 // ----------------------------------------------------------------------------
  30
  31 class MiscTestCase : public CppUnit::TestCase
  32 {
  33 public:
  34     MiscTestCase() { }
  35
  36 private:
  37     CPPUNIT_TEST_SUITE( MiscTestCase );
  38         CPPUNIT_TEST( Assert );
  39         CPPUNIT_TEST( Delete );
  40         CPPUNIT_TEST( StaticCast );
  41     CPPUNIT_TEST_SUITE_END();
  42
  43     void Assert();
  44     void Delete();
  45     void StaticCast();
  46
  47     DECLARE_NO_COPY_CLASS(MiscTestCase)
  48 };
  49
  50 // register in the unnamed registry so that these tests are run by default
  51 CPPUNIT_TEST_SUITE_REGISTRATION( MiscTestCase );
  52
  53 // also include in its own registry so that these tests can be run alone
  54 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MiscTestCase, "MiscTestCase" );
  55
  56 namespace
  57 {
  58
  59 bool AssertIfOdd(int n)
  60 {
  61     wxCHECK_MSG( !(n % 2), false, "parameter must be even" );
  62
  63     return true;
  64 }
  65
  66 } // anonymous namespace
  67
  68 void MiscTestCase::Assert()
  69 {
  70     AssertIfOdd(0);
  71     WX_ASSERT_FAILS_WITH_ASSERT(AssertIfOdd(1));
  72
  73     // doesn't fail any more
  74     wxAssertHandler_t oldHandler = wxSetAssertHandler(NULL);
  75     AssertIfOdd(17);
  76     wxSetAssertHandler(oldHandler);
  77 }
  78
  79 void MiscTestCase::Delete()
  80 {
  81     // Allocate some arbitrary memory to get a valid pointer:
  82     long *pointer = new long;
  83     CPPUNIT_ASSERT( pointer != NULL );
  84
  85     // Check that wxDELETE sets the pointer to NULL:
  86     wxDELETE( pointer );
  87     CPPUNIT_ASSERT( pointer == NULL );
  88
  89     // Allocate some arbitrary array to get a valid pointer:
  90     long *array = new long[ 3 ];
  91     CPPUNIT_ASSERT( array != NULL );
  92
  93     // Check that wxDELETEA sets the pointer to NULL:
  94     wxDELETE( array );
  95     CPPUNIT_ASSERT( array == NULL );
  96
  97     // this results in compilation error, as it should
  98 #if 0
  99     struct SomeUnknownStruct *p = NULL;
 100     wxDELETE(p);
 101 #endif
 102 }
 103
 104 namespace
 105 {
 106
 107 // helper function used just to avoid warnings about value computed not being
 108 // used in WX_ASSERT_FAILS_WITH_ASSERT() in StaticCast() below
 109 bool IsNull(void *p)
 110 {
 111     return p == NULL;
 112 }
 113
 114 } // anonymous namespace
 115
 116 void MiscTestCase::StaticCast()
 117 {
 118     wxTarEntry tarEntry;
 119     CPPUNIT_ASSERT( wxStaticCast(&tarEntry, wxArchiveEntry) );
 120
 121     wxArchiveEntry *entry = &tarEntry;
 122     CPPUNIT_ASSERT( wxStaticCast(entry, wxTarEntry) );
 123
 124     wxZipEntry zipEntry;
 125     entry = &zipEntry;
 126     CPPUNIT_ASSERT( wxStaticCast(entry, wxZipEntry) );
 127
 128     WX_ASSERT_FAILS_WITH_ASSERT( IsNull(wxStaticCast(entry, wxTarEntry)) );
 129     WX_ASSERT_FAILS_WITH_ASSERT( IsNull(wxStaticCast(&zipEntry, wxTarEntry)) );
 130 }
 131