tests/misc/dynamiclib.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/misc/dynamiclib.cpp
   3 // Purpose:     Test wxDynamicLibrary
   4 // Author:      Francesco Montorsi (extracted from console sample)
   5 // Created:     2010-06-13
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2010 wxWidgets team
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17 #   pragma hdrstop
  18 #endif
  19
  20 #include "wx/dynlib.h"
  21
  22 #ifdef __UNIX__
  23     #include "wx/filename.h"
  24     #include "wx/log.h"
  25 #endif
  26
  27 // ----------------------------------------------------------------------------
  28 // test class
  29 // ----------------------------------------------------------------------------
  30
  31 class DynamicLibraryTestCase : public CppUnit::TestCase
  32 {
  33 public:
  34     DynamicLibraryTestCase() { }
  35
  36 private:
  37     CPPUNIT_TEST_SUITE( DynamicLibraryTestCase );
  38         CPPUNIT_TEST( Load );
  39     CPPUNIT_TEST_SUITE_END();
  40
  41     void Load();
  42
  43     DECLARE_NO_COPY_CLASS(DynamicLibraryTestCase)
  44 };
  45
  46 // register in the unnamed registry so that these tests are run by default
  47 CPPUNIT_TEST_SUITE_REGISTRATION( DynamicLibraryTestCase );
  48
  49 // also include in its own registry so that these tests can be run alone
  50 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( DynamicLibraryTestCase, "DynamicLibraryTestCase" );
  51
  52 void DynamicLibraryTestCase::Load()
  53 {
  54 #if defined(__WINDOWS__)
  55     static const wxChar *LIB_NAME = wxT("kernel32.dll");
  56     static const wxChar *FUNC_NAME = wxT("lstrlenA");
  57 #elif defined(__UNIX__)
  58 #ifdef __DARWIN__
  59     static const wxChar *LIB_NAME = wxT("/usr/lib/libc.dylib");
  60 #else
  61     // weird: using just libc.so does *not* work!
  62     static const wxChar *LIB_NAME = wxT("/lib/libc.so.6");
  63 #endif
  64     static const wxChar *FUNC_NAME = wxT("strlen");
  65
  66     if ( !wxFileName::Exists(LIB_NAME) )
  67     {
  68         wxLogWarning("Shared library \"%s\" doesn't exist, "
  69                      "skipping DynamicLibraryTestCase::Load() test.");
  70         return;
  71     }
  72 #else
  73     #error "don't know how to test wxDllLoader on this platform"
  74 #endif
  75
  76     wxDynamicLibrary lib(LIB_NAME);
  77     CPPUNIT_ASSERT( lib.IsLoaded() );
  78
  79     typedef int (wxSTDCALL *wxStrlenType)(const char *);
  80     wxStrlenType pfnStrlen = (wxStrlenType)lib.GetSymbol(FUNC_NAME);
  81
  82     wxString errMsg = wxString::Format("ERROR: function '%s' wasn't found in '%s'.\n",
  83                                        FUNC_NAME, LIB_NAME);
  84     CPPUNIT_ASSERT_MESSAGE( errMsg.ToStdString(), pfnStrlen );
  85
  86     // Call the function dynamically loaded
  87     CPPUNIT_ASSERT( pfnStrlen("foo") == 3 );
  88
  89 #ifdef __WINDOWS__
  90     static const wxChar *FUNC_NAME_AW = wxT("lstrlen");
  91
  92     typedef int (wxSTDCALL *wxStrlenTypeAorW)(const wxChar *);
  93     wxStrlenTypeAorW
  94         pfnStrlenAorW = (wxStrlenTypeAorW)lib.GetSymbolAorW(FUNC_NAME_AW);
  95
  96     wxString errMsg2 = wxString::Format("ERROR: function '%s' wasn't found in '%s'.\n",
  97                                        FUNC_NAME_AW, LIB_NAME);
  98     CPPUNIT_ASSERT_MESSAGE( errMsg2.ToStdString(), pfnStrlenAorW );
  99
 100     CPPUNIT_ASSERT( pfnStrlenAorW(wxT("foobar")) == 6 );
 101 #endif // __WINDOWS__
 102 }