TST: updated transformer test to assert False instead of raising an exception

unittests/test_transformers.py

@@ -71,9 +71,11 @@ def test_simple_transformer():
                 assert r.get_property("Day").value == "Tuesday"
                 assert r.get_property("DaySplit").value == ["Tue"]
             else:
-                raise RuntimeError("There is no other short version!")
+                # unexpected occurence of a short form, something wrong with test directories
+                assert False
         elif r.parents[0].name == "Number":
             assert r.get_property("num") is not None
             assert r.get_property("num").value == "'12345 5 '"
         else:
-            raise RuntimeError("unkown error")
+            # unkown error, something wrong with test directories
+            assert False