Cleanup stokes tests

test/stokes/stokes.mini

@@ -15,4 +15,4 @@ extension = vtu
 [formcompiler]
 numerical_jacobian = 0, 1 | expand num
 exact_solution_expression = g
-compare_l2errorsquared = 1e-6
+compare_l2errorsquared = 1e-11

test/stokes/stokes_dg.mini

@@ -17,4 +17,4 @@ zeroThreshold.data_1 = 1e-6
 [formcompiler]
 numerical_jacobian = 0, 1 | expand num
 exact_solution_expression = g
-compare_l2errorsquared = 1e-5
+compare_l2errorsquared = 1e-8

test/stokes/stokes_stress.mini

 __name = stokes_stress_{__exec_suffix}
-#__exec_suffix = symdiff, numdiff | expand num
+# No symdiff due to multiple iname duplication!
+# __exec_suffix = symdiff, numdiff | expand num
 __exec_suffix = numdiff
 
 lowerleft = 0.0 0.0
@@ -14,7 +15,7 @@ reference = hagenpoiseuille_ref
 extension = vtu
 
 [formcompiler]
-#numerical_jacobian = 0, 1 | expand num
+# numerical_jacobian = 0, 1 | expand num
 numerical_jacobian = 1
 exact_solution_expression = g
-compare_l2errorsquared = 1e-6
+compare_l2errorsquared = 1e-11

test/stokes/stokes_sym.mini

@@ -15,6 +15,6 @@ extension = vtu
 [formcompiler]
 numerical_jacobian = 0, 1 | expand num
 exact_solution_expression = g
-compare_l2errorsquared = 1e-6
+compare_l2errorsquared = 1e-11
 print_transformations = True
 print_transformations_dir = .