0000525: Crash when doing an undo of an already deleted object

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5334 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d

src/Mod/Test/Document.py

@@ -47,6 +47,15 @@ class DocumentBasicCases(unittest.TestCase):
     self.Doc.commitTransaction()
     self.Doc.undo()
 
+  def testAddRemoveUndo(self):
+    # Bug #0000525
+    self.Doc.openTransaction("Add")
+    obj=self.Doc.addObject("App::FeatureTest","Label")
+    self.Doc.commitTransaction()
+    self.Doc.removeObject(obj.Name)
+    self.Doc.undo()
+    self.Doc.undo()
+
   def testRemoval(self):
     # Cannot write a real test case for that but when debugging the
     # C-code there shouldn't be a memory leak (see rev. 1814)