Test: modernize C++11

* remove redundant void-arg
* use nullptr

src/Mod/Test/Gui/AppTestGui.cpp

@@ -57,7 +57,7 @@ private:
     }
     Py::Object setTest(const Py::Tuple& args)
     {
-        char *pstr=0;
+        char *pstr=nullptr;
         if (!PyArg_ParseTuple(args.ptr(), "|s", &pstr))
             throw Py::Exception();
 
@@ -70,7 +70,7 @@ private:
     }
     Py::Object addTest(const Py::Tuple& args)
     {
-        char *pstr=0;
+        char *pstr=nullptr;
         if (!PyArg_ParseTuple(args.ptr(), "|s", &pstr))
             throw Py::Exception();
 

src/Mod/Test/Gui/UnitTestImp.cpp

@@ -40,7 +40,7 @@ using namespace TestGui;
 
 /* TRANSLATOR TestGui::UnitTestDialog */
 
-UnitTestDialog* UnitTestDialog::_instance=0;
+UnitTestDialog* UnitTestDialog::_instance=nullptr;
 
 /**
  * Creates and returns the one and only instance of this dialog.
@@ -58,9 +58,9 @@ UnitTestDialog* UnitTestDialog::instance()
  */
 void UnitTestDialog::destruct ()
 {
-    if (_instance != 0) {
+    if (_instance != nullptr) {
         UnitTestDialog *pTmp = _instance;
-        _instance = 0;
+        _instance = nullptr;
         delete pTmp;
     }
 }
@@ -70,7 +70,7 @@ void UnitTestDialog::destruct ()
  */
 bool UnitTestDialog::hasInstance()
 {
-    return _instance != 0;
+    return _instance != nullptr;
 }
 
 /**

src/Mod/Test/Gui/UnitTestImp.h

@@ -60,7 +60,7 @@ public:
     static bool hasInstance();
 
 protected:
-    UnitTestDialog(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
+    UnitTestDialog(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
     ~UnitTestDialog();
     void setProgressColor(const QColor& col);
 

src/Mod/Test/Gui/UnitTestPy.cpp

@@ -96,8 +96,8 @@ Py::Object UnitTestDialogPy::clearErrorList(const Py::Tuple& args)
 
 Py::Object UnitTestDialogPy::insertError(const Py::Tuple& args)
 {
-    char *failure=0;
-    char *details=0;
+    char *failure=nullptr;
+    char *details=nullptr;
     if (!PyArg_ParseTuple(args.ptr(), "ss", &failure,&details))
         throw Py::Exception();
 
@@ -108,7 +108,7 @@ Py::Object UnitTestDialogPy::insertError(const Py::Tuple& args)
 
 Py::Object UnitTestDialogPy::setUnitTest(const Py::Tuple& args)
 {
-    char *pstr=0;
+    char *pstr=nullptr;
     if (!PyArg_ParseTuple(args.ptr(), "s", &pstr))
         throw Py::Exception();
 
@@ -125,7 +125,7 @@ Py::Object UnitTestDialogPy::getUnitTest(const Py::Tuple& args)
 
 Py::Object UnitTestDialogPy::setStatusText(const Py::Tuple& args)
 {
-    char *pstr=0;
+    char *pstr=nullptr;
     if (!PyArg_ParseTuple(args.ptr(), "s", &pstr))
         throw Py::Exception();
 
@@ -136,7 +136,7 @@ Py::Object UnitTestDialogPy::setStatusText(const Py::Tuple& args)
 Py::Object UnitTestDialogPy::setProgressFrac(const Py::Tuple& args)
 {
     float fraction;
-    char* pColor=0;
+    char* pColor=nullptr;
     if (!PyArg_ParseTuple(args.ptr(), "f|s",&fraction, &pColor))
         throw Py::Exception();
 
@@ -149,8 +149,8 @@ Py::Object UnitTestDialogPy::setProgressFrac(const Py::Tuple& args)
 
 Py::Object UnitTestDialogPy::errorDialog(const Py::Tuple& args)
 {
-    char *title=0;
-    char *message=0;
+    char *title=nullptr;
+    char *message=nullptr;
     if (!PyArg_ParseTuple(args.ptr(), "ss", &title, &message))
         throw Py::Exception();
     UnitTestDialog::instance()->showErrorDialog(title,message);

src/Mod/Test/Gui/UnitTestPy.h

@@ -35,7 +35,7 @@ class UnitTestDialog;
 class UnitTestDialogPy : public Py::PythonExtension<UnitTestDialogPy>
 {
 public:
-    static void init_type(void);    // announce properties and methods
+    static void init_type();    // announce properties and methods
 
     UnitTestDialogPy();
     ~UnitTestDialogPy();