Gui: fix SelectionSingleton::sHasSelection

src/Gui/Selection.cpp

@@ -2428,7 +2428,7 @@ PyObject *SelectionSingleton::sHasSelection(PyObject * /*self*/, PyObject *args)
 {
     const char *doc = nullptr;
     int resolve = 0;
-    if (!PyArg_ParseTuple(args, "|sO!", &doc, &resolve))
+    if (!PyArg_ParseTuple(args, "|si", &doc, &resolve))
         return nullptr;
 
     PY_TRY {

src/Mod/Test/Document.py

@@ -475,6 +475,12 @@ class DocumentBasicCases(unittest.TestCase):
         self.Doc.removeObject(obj.Name)
         del obj
 
+    def testHasSelection(self):
+        if FreeCAD.GuiUp:
+            import FreeCADGui
+
+            self.assertFalse(FreeCADGui.Selection.hasSelection("", 1))
+
     def testPropertyLink_Issue2902Part1(self):
         o1 = self.Doc.addObject("App::FeatureTest", "test1")
         o2 = self.Doc.addObject("App::FeatureTest", "test2")