very simple test

python/damask/_result.py

@@ -1041,7 +1041,7 @@ class Result:
         pool.join()
 
 
-    def write_XMDF(self):
+    def write_XDMF(self):
         """
         Write XDMF file to directly visualize data in DADF5 file.
 

python/tests/test_Result.py

@@ -185,3 +185,7 @@ class TestResult:
         in_memory = mechanics.left_stretch(default.read_dataset(loc['F'],0))
         in_file   = default.read_dataset(loc['V(F)'],0)
         assert np.allclose(in_memory,in_file)
+
+    @pytest.mark.parametrize('output',['F',[],['F','P']])
+    def test_vtk(self,default,output):
+        default.to_vtk(output)