diff --git a/python/tests/test_curl.py b/python/tests/test_curl.py
index 52e12d223..c3bcc2682 100644
--- a/python/tests/test_curl.py
+++ b/python/tests/test_curl.py
@@ -6,46 +6,47 @@ from damask import grid_filters
 class TestGridFilters:
 
 
-    @pytest.mark.parametrize('field_def,curl_def',
-                             [(['np.sin(np.pi*2*nodes[...,2]/size[2])', '0.0', '0.0',
-                                '0.0',                                  '0.0', '0.0',
-                                '0.0',                                  '0.0', '0.0' ],
-                               ['0.0'                                                 , '0.0', '0.0',
-                                'np.cos(np.pi*2*nodes[...,2]/size[2])*np.pi*2/size[2]', '0.0', '0.0',
-                                '0.0',                                                  '0.0', '0.0']
-                              ),
-                              (['np.cos(np.pi*2*nodes[...,1]/size[1])', '0.0', '0.0',
-                                '0.0',                                  '0.0', '0.0',
-                                'np.cos(np.pi*2*nodes[...,0]/size[0])', '0.0', '0.0'],
-                               ['0.0',                                                  '0.0', '0.0',
-                                '0.0',                                                  '0.0', '0.0',
-                                'np.sin(np.pi*2*nodes[...,1]/size[1])*np.pi*2/size[1]', '0.0', '0.0']
-                              ),
-                              (['np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])',
-                                'np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])',
-                                'np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])'],
-                               ['0.0', '0.0', '0.0',
-                                '0.0', '0.0', '0.0',
-                                '0.0', '0.0', '0.0']
-                              ),
-                              (['5.0', '0.0', '0.0',
-                                '0.0', '0.0', '0.0',
-                                '0.0', '0.0', '2*np.cos(np.pi*2*nodes[...,1]/size[1])'],
-                               ['0.0', '0.0', '-2*np.pi*2/size[1]*np.sin(np.pi*2*nodes[...,1]/size[1])',
-                                '0.0', '0.0', '0.0',
-                                '0.0', '0.0', '0.0']
-                              ),
-                              (['4*np.sin(np.pi*2*nodes[...,2]/size[2])', '8*np.sin(np.pi*2*nodes[...,0]/size[0])', '16*np.sin(np.pi*2*nodes[...,1]/size[1])'],
-                               ['16*np.pi*2/size[1]*np.cos(np.pi*2*nodes[...,1]/size[1])', \
-                                '4*np.pi*2/size[2]*np.cos(np.pi*2*nodes[...,2]/size[2])', \
-                                '8*np.pi*2/size[0]*np.cos(np.pi*2*nodes[...,0]/size[0])']
-                              ),
-                              (['0.0', 'np.cos(np.pi*2*nodes[...,0]/size[0])+5*np.cos(np.pi*2*nodes[...,2]/size[2])', '0.0'],
-                               ['5*np.sin(np.pi*2*nodes[...,2]/size[2])*np.pi*2/size[2]',\
-                                '0.0',\
-                                '-np.sin(np.pi*2*nodes[...,0]/size[0])*np.pi*2/size[0]']
-                              )
-                             ])
+    curl_test_data =[(['np.sin(np.pi*2*nodes[...,2]/size[2])', '0.0', '0.0',
+                       '0.0',                                  '0.0', '0.0',
+                       '0.0',                                  '0.0', '0.0' ],
+                      ['0.0'                                                 , '0.0', '0.0',
+                       'np.cos(np.pi*2*nodes[...,2]/size[2])*np.pi*2/size[2]', '0.0', '0.0',
+                       '0.0',                                                  '0.0', '0.0']
+                     ),
+                     (['np.cos(np.pi*2*nodes[...,1]/size[1])', '0.0', '0.0',
+                       '0.0',                                  '0.0', '0.0',
+                       'np.cos(np.pi*2*nodes[...,0]/size[0])', '0.0', '0.0'],
+                      ['0.0',                                                  '0.0', '0.0',
+                       '0.0',                                                  '0.0', '0.0',
+                       'np.sin(np.pi*2*nodes[...,1]/size[1])*np.pi*2/size[1]', '0.0', '0.0']
+                     ),
+                     (['np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])',
+                       'np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])',
+                       'np.sin(np.pi*2*nodes[...,0]/size[0])','np.cos(np.pi*2*nodes[...,1]/size[1])','np.sin(np.pi*2*nodes[...,2]/size[2])'],
+                      ['0.0', '0.0', '0.0',
+                       '0.0', '0.0', '0.0',
+                       '0.0', '0.0', '0.0']
+                     ),
+                     (['5.0', '0.0', '0.0',
+                       '0.0', '0.0', '0.0',
+                       '0.0', '0.0', '2*np.cos(np.pi*2*nodes[...,1]/size[1])'],
+                      ['0.0', '0.0', '-2*np.pi*2/size[1]*np.sin(np.pi*2*nodes[...,1]/size[1])',
+                       '0.0', '0.0', '0.0',
+                       '0.0', '0.0', '0.0']
+                     ),
+                     (['4*np.sin(np.pi*2*nodes[...,2]/size[2])', '8*np.sin(np.pi*2*nodes[...,0]/size[0])', '16*np.sin(np.pi*2*nodes[...,1]/size[1])'],
+                      ['16*np.pi*2/size[1]*np.cos(np.pi*2*nodes[...,1]/size[1])', \
+                       '4*np.pi*2/size[2]*np.cos(np.pi*2*nodes[...,2]/size[2])', \
+                       '8*np.pi*2/size[0]*np.cos(np.pi*2*nodes[...,0]/size[0])']
+                     ),
+                     (['0.0', 'np.cos(np.pi*2*nodes[...,0]/size[0])+5*np.cos(np.pi*2*nodes[...,2]/size[2])', '0.0'],
+                      ['5*np.sin(np.pi*2*nodes[...,2]/size[2])*np.pi*2/size[2]',\
+                       '0.0',\
+                       '-np.sin(np.pi*2*nodes[...,0]/size[0])*np.pi*2/size[0]'])]
+
+
+    @pytest.mark.parametrize('field_def,curl_def',curl_test_data)                        
+                             
     def test_curl(self,field_def,curl_def):
         size = np.random.random(3)+1.0
         grid = np.random.randint(8,32,(3))