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 // Copyright:   (c) 2008 Peter Most
   7 //              (c) 2009 Vadim Zeitlin
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #include "wx/defs.h"
  21
  22 // just some classes using wxRTTI for wxStaticCast() test
  23 #include "wx/tarstrm.h"
  24 #include "wx/zipstrm.h"
  25
  26 // ----------------------------------------------------------------------------
  27 // test class
  28 // ----------------------------------------------------------------------------
  29
  30 class MiscTestCase : public CppUnit::TestCase
  31 {
  32 public:
  33     MiscTestCase() { }
  34
  35 private:
  36     CPPUNIT_TEST_SUITE( MiscTestCase );
  37         CPPUNIT_TEST( Assert );
  38         CPPUNIT_TEST( Delete );
  39         CPPUNIT_TEST( StaticCast );
  40     CPPUNIT_TEST_SUITE_END();
  41
  42     void Assert();
  43     void Delete();
  44     void StaticCast();
  45
  46     DECLARE_NO_COPY_CLASS(MiscTestCase)
  47 };
  48
  49 // register in the unnamed registry so that these tests are run by default
  50 CPPUNIT_TEST_SUITE_REGISTRATION( MiscTestCase );
  51
  52 // also include in its own registry so that these tests can be run alone
  53 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MiscTestCase, "MiscTestCase" );
  54
  55 namespace
  56 {
  57
  58 bool AssertIfOdd(int n)
  59 {
  60     wxCHECK_MSG( !(n % 2), false, "parameter must be even" );
  61
  62     return true;
  63 }
  64
  65 } // anonymous namespace
  66
  67 void MiscTestCase::Assert()
  68 {
  69     AssertIfOdd(0);
  70     WX_ASSERT_FAILS_WITH_ASSERT(AssertIfOdd(1));
  71
  72     // doesn't fail any more
  73     wxAssertHandler_t oldHandler = wxSetAssertHandler(NULL);
  74     AssertIfOdd(17);
  75     wxSetAssertHandler(oldHandler);
  76 }
  77
  78 void MiscTestCase::Delete()
  79 {
  80     // Allocate some arbitrary memory to get a valid pointer:
  81     long *pointer = new long;
  82     CPPUNIT_ASSERT( pointer != NULL );
  83
  84     // Check that wxDELETE sets the pointer to NULL:
  85     wxDELETE( pointer );
  86     CPPUNIT_ASSERT( pointer == NULL );
  87
  88     // Allocate some arbitrary array to get a valid pointer:
  89     long *array = new long[ 3 ];
  90     CPPUNIT_ASSERT( array != NULL );
  91
  92     // Check that wxDELETEA sets the pointer to NULL:
  93     wxDELETE( array );
  94     CPPUNIT_ASSERT( array == NULL );
  95
  96     // this results in compilation error, as it should
  97 #if 0
  98     struct SomeUnknownStruct *p = NULL;
  99     wxDELETE(p);
 100 #endif
 101 }
 102
 103 namespace
 104 {
 105
 106 // helper function used just to avoid warnings about value computed not being
 107 // used in WX_ASSERT_FAILS_WITH_ASSERT() in StaticCast() below
 108 bool IsNull(void *p)
 109 {
 110     return p == NULL;
 111 }
 112
 113 } // anonymous namespace
 114
 115 void MiscTestCase::StaticCast()
 116 {
 117 #if wxUSE_TARSTREAM
 118     wxTarEntry tarEntry;
 119     CPPUNIT_ASSERT( wxStaticCast(&tarEntry, wxArchiveEntry) );
 120
 121     wxArchiveEntry *entry = &tarEntry;
 122     CPPUNIT_ASSERT( wxStaticCast(entry, wxTarEntry) );
 123
 124 #if wxUSE_ZIPSTREAM
 125     wxZipEntry zipEntry;
 126     entry = &zipEntry;
 127     CPPUNIT_ASSERT( wxStaticCast(entry, wxZipEntry) );
 128     WX_ASSERT_FAILS_WITH_ASSERT( IsNull(wxStaticCast(&zipEntry, wxTarEntry)) );
 129 #endif // wxUSE_ZIPSTREAM
 130
 131     WX_ASSERT_FAILS_WITH_ASSERT( IsNull(wxStaticCast(entry, wxTarEntry)) );
 132 #endif // wxUSE_TARSTREAM
 133 }
 134