wxwidgets library tests: Add syntax checking, fix test file. (#1084)

For the syntax check g++ needs to know the wxWidgets include paths which
are retrieved via wx-config. If includes are missing or not working the
syntax check is skipped.
wxwidgets.cpp: Fixed syntax, includes and added code so the syntax check
does not fail if some special features are not present.

test/cfg/runtests.sh

@@ -45,6 +45,22 @@ ${CPPCHECK} ${CPPCHECK_OPT} --inconclusive --platform=win32W  ${DIR}windows.cpp
 ${CPPCHECK} ${CPPCHECK_OPT} --inconclusive --platform=win64  ${DIR}windows.cpp
 
 # wxwidgets.cpp
-# Syntax check via g++ is disabled because wx headers are not always present.
+set +e
-#${CXX} ${CXX_OPT} ${DIR}wxwidgets.cpp
+WXCONFIG=`wx-config --cxxflags`
-${CPPCHECK} ${CPPCHECK_OPT} --inconclusive --library=wxwidgets ${DIR}wxwidgets.cpp
+WXCONFIG_RETURNCODE=$?
+set -e
+if [ $WXCONFIG_RETURNCODE -ne 0 ]; then
+    echo "wx-config does not work, skipping syntax check for wxWidgets tests."
+else
+    set +e
+    echo -e "#include <wx/filefn.h>\n#include <wx/app.h>\n#include <wx/artprov.h>\n" | ${CXX} ${CXX_OPT} ${WXCONFIG} -x c++ -
+    WXCHECK_RETURNCODE=$?
+    set -e
+    if [ $WXCHECK_RETURNCODE -ne 0 ]; then
+        echo "wxWidgets not completely present (with GUI classes) or not working, skipping syntax check with ${CXX}."
+    else
+        echo "wxWidgets found, checking syntax with ${CXX} now."
+        ${CXX} ${CXX_OPT} ${WXCONFIG} -Wno-deprecated-declarations ${DIR}wxwidgets.cpp
+    fi
+fi
+${CPPCHECK} ${CPPCHECK_OPT} --inconclusive --library=wxwidgets -f ${DIR}wxwidgets.cpp

test/cfg/wxwidgets.cpp

@@ -7,7 +7,15 @@
 // No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
 //
 
+#include <wx/app.h>
+#include <wx/log.h>
 #include <wx/filefn.h>
+#include <wx/spinctrl.h>
+#include <wx/artprov.h>
+#include <wx/calctrl.h>
+#include <wx/combo.h>
+#include <wx/icon.h>
+#include <wx/bitmap.h>
 
 void validCode()
 {
@@ -16,20 +24,28 @@ void validCode()
     wxLogGeneric(wxLOG_Message, "test %d", 0);
     wxLogMessage("test %s", "str");
 
-    wxSpinCtrl::SetBase(10);
-    wxSpinCtrl::SetBase(16);
-
     wxString translation1 = _("text");
     wxString translation2 = wxGetTranslation("text");
     wxString translation3 = wxGetTranslation("string", "domain");
 }
 
+#if wxUSE_GUI==1
+void validGuiCode()
+{
+#if wxUSE_SPINCTRL==1
+    extern wxSpinCtrl spinCtrlInstance;
+    spinCtrlInstance.SetBase(10);
+    spinCtrlInstance.SetBase(16);
+#endif
+}
+#endif
+
 void nullPointer()
 {
     // cppcheck-suppress nullPointer
-    wxLogGeneric(wxLOG_Message, NULL);
+    wxLogGeneric(wxLOG_Message, (char*)NULL);
     // cppcheck-suppress nullPointer
-    wxLogMessage(NULL);
+    wxLogMessage((char*)NULL);
 }
 
 void ignoredReturnValue()
@@ -40,10 +56,13 @@ void ignoredReturnValue()
 
 void invalidFunctionArg()
 {
+#if wxUSE_SPINCTRL==1
+    extern wxSpinCtrl spinCtrlInstance;
     // cppcheck-suppress invalidFunctionArg
-    wxSpinCtrl::SetBase(0);
+    spinCtrlInstance.SetBase(0);
     // cppcheck-suppress invalidFunctionArg
-    wxSpinCtrl::SetBase(5);
+    spinCtrlInstance.SetBase(5);
+#endif
 }
 
 void uninitvar()
@@ -61,14 +80,20 @@ void uninitvar()
 
 void deprecatedFunctions(wxApp &a, const wxString &s, wxArtProvider *artProvider, wxCalendarCtrl &calenderCtrl, wxComboCtrl &comboCtrl)
 {
+#ifdef __WXOSX__
     // cppcheck-suppress MacOpenFileCalled
     a.MacOpenFile(s);
+#endif
     // cppcheck-suppress InsertCalled
     wxArtProvider::Insert(artProvider);
+#if defined(__WXMSW__) || defined(__WXGTK__)
+    // EnableYearChange() is not available on these GUI systems
+#else
     // cppcheck-suppress EnableYearChangeCalled
     calenderCtrl.EnableYearChange(false);
     // cppcheck-suppress EnableYearChangeCalled
     calenderCtrl.EnableYearChange(/*default=yes*/);
+#endif
     // cppcheck-suppress GetTextIndentCalled
     // cppcheck-suppress ignoredReturnValue
     comboCtrl.GetTextIndent();