add the 'GarbageTestCase' which helped me to spot some buggy load routines

[wxWidgets.git] / tests / misc / garbage.cpp

diff --git a/tests/misc/garbage.cpp b/tests/misc/garbage.cpp
new file mode 100644 (file)
index 0000000..591fef3
--- /dev/null
+++ b/tests/misc/garbage.cpp
@@ -0,0 +1,183 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        tests/misc/garbage.cpp
+// Purpose:     test if loading garbage fails
+// Author:      Francesco Montorsi
+// Created:     2009-01-10
+// RCS-ID:      $Id$
+// Copyright:   (c) 2009 Francesco Montorsi
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#include "wx/filename.h"
+#include "wx/image.h"
+#include "wx/animate.h"
+#include "wx/mstream.h"
+#include "wx/dynlib.h"
+#include "wx/mediactrl.h"
+#include "wx/html/htmlwin.h"
+#include "wx/xrc/xmlres.h"
+
+#define GARBAGE_DATA_SIZE   1000000             // in bytes; ~ 1MB
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class GarbageTestCase : public CppUnit::TestCase
+{
+public:
+    GarbageTestCase() { }
+
+private:
+    CPPUNIT_TEST_SUITE( GarbageTestCase );
+        CPPUNIT_TEST( LoadGarbage );
+    CPPUNIT_TEST_SUITE_END();
+
+    void LoadGarbage();
+    void DoLoadFile(const wxString& fullname);
+    void DoLoadStream(wxInputStream& stream);
+
+    DECLARE_NO_COPY_CLASS(GarbageTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( GarbageTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( GarbageTestCase, "GarbageTestCase" );
+
+
+void GarbageTestCase::LoadGarbage()
+{
+    srand(1234);
+
+    wxInitAllImageHandlers();
+
+    for (size_t size = 1; size < GARBAGE_DATA_SIZE; size *= size+1)
+    {
+        // first, generate some garbage data
+        unsigned char *data = new unsigned char[size];
+        for (size_t i = 0; i < size; i++)
+            data[i] = rand();
+
+        // write it to a file
+        wxString garbagename = wxFileName::CreateTempFileName("garbage");
+        CPPUNIT_ASSERT( !garbagename.empty() );
+
+        wxFile garbage(garbagename, wxFile::write);
+        CPPUNIT_ASSERT( garbage.IsOpened() );
+
+        CPPUNIT_ASSERT( garbage.Write(data, size) == size );
+        garbage.Close();
+
+        // try to load it by name
+        DoLoadFile(garbagename);
+
+        // try to load it from a wxInputStream
+        wxMemoryInputStream stream(data, size);
+        DoLoadStream(stream);
+
+        wxDELETEA(data);
+    }
+}
+
+void GarbageTestCase::DoLoadFile(const wxString& fullname)
+{
+    // test wxImage
+    wxImage img;
+    CPPUNIT_ASSERT( img.LoadFile(fullname) == false );
+        // test with the default wxBITMAP_TYPE_ANY
+
+    for (int type = wxBITMAP_TYPE_BMP; type < wxBITMAP_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( img.LoadFile(fullname, (wxBitmapType)type) == false );
+            // test with all other possible wxBITMAP_TYPE_* flags
+
+    // test wxBitmap
+    wxBitmap bmp;
+    CPPUNIT_ASSERT( bmp.LoadFile(fullname) == false );
+        // test with the default wxBITMAP_TYPE_ANY
+
+    for (int type = wxBITMAP_TYPE_BMP; type < wxBITMAP_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( bmp.LoadFile(fullname, (wxBitmapType)type) == false );
+            // test with all other possible wxBITMAP_TYPE_* flags
+
+    // test wxIcon
+    wxIcon icon;
+    CPPUNIT_ASSERT( icon.LoadFile(fullname) == false );
+        // test with the default wxICON_DEFAULT_TYPE
+
+    for (int type = wxBITMAP_TYPE_BMP; type < wxBITMAP_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( icon.LoadFile(fullname, (wxBitmapType)type) == false );
+            // test with all other possible wxBITMAP_TYPE_* flags
+
+
+    // test wxAnimation
+    wxAnimation anim;
+    CPPUNIT_ASSERT( anim.LoadFile(fullname) == false );
+        // test with the default wxANIMATION_TYPE_ANY
+
+    for (int type = wxANIMATION_TYPE_INVALID+1; type < wxANIMATION_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( anim.LoadFile(fullname, (wxAnimationType)type) == false );
+            // test with all other possible wxANIMATION_TYPE_* flags
+
+
+    // test wxDynamicLibrary
+    wxDynamicLibrary lib;
+    CPPUNIT_ASSERT( lib.Load(fullname) == false );
+        // test with the default wxANIMATION_TYPE_ANY
+/*
+#if wxUSE_MEDIACTRL
+    // test wxMediaCtrl
+    wxMediaCtrl *media = new wxMediaCtrl(wxTheApp->GetTopWindow());
+    CPPUNIT_ASSERT( media->Load(fullname) == false );
+#endif
+
+    // test wxHtmlWindow
+    wxHtmlWindow *htmlwin = new wxHtmlWindow(wxTheApp->GetTopWindow());
+    CPPUNIT_ASSERT( htmlwin->LoadFile(fullname) == false );
+    delete htmlwin;
+*/
+    // test wxXmlResource
+    CPPUNIT_ASSERT( wxXmlResource::Get()->Load(fullname) == false );
+}
+
+void GarbageTestCase::DoLoadStream(wxInputStream& stream)
+{
+    // NOTE: not all classes tested by DoLoadFile() supports loading
+    //       from an input stream!
+
+    // test wxImage
+    wxImage img;
+    CPPUNIT_ASSERT( img.LoadFile(stream) == false );
+        // test with the default wxBITMAP_TYPE_ANY
+
+    for (int type = wxBITMAP_TYPE_INVALID+1; type < wxBITMAP_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( img.LoadFile(stream, (wxBitmapType)type) == false );
+            // test with all other possible wxBITMAP_TYPE_* flags
+
+
+    // test wxAnimation
+    wxAnimation anim;
+    CPPUNIT_ASSERT( anim.Load(stream) == false );
+        // test with the default wxANIMATION_TYPE_ANY
+
+    for (int type = wxANIMATION_TYPE_INVALID+1; type < wxANIMATION_TYPE_ANY; type++)
+        CPPUNIT_ASSERT( anim.Load(stream, (wxAnimationType)type) == false );
+            // test with all other possible wxANIMATION_TYPE_* flags
+/*
+    // test wxHtmlWindow
+    wxHtmlWindow *htmlwin = new wxHtmlWindow(wxTheApp->GetTopWindow());
+    CPPUNIT_ASSERT( htmlwin->LoadFile(fullname) == false );
+    delete htmlwin;
+*/
+}
+