NumPy changed what exception is raised for ufunc-call with wrong numb…

…er of arguments.

The ODL tests checked against the previously raised `ValueError`, but in newer
versions `TypeError` is raised instead, which these tests could not handle.

odl/test/discr/discr_space_test.py

@@ -907,7 +907,9 @@ def test_ufunc_corner_cases(odl_tspace_impl):
 
     # --- UFuncs with nin = 1, nout = 1 --- #
 
-    with pytest.raises(ValueError):
+    wrong_argcount_error = ValueError if np.__version__<"1.21" else TypeError
+
+    with pytest.raises(wrong_argcount_error):
         # Too many arguments
         x.__array_ufunc__(np.sin, '__call__', x, np.ones((2, 3)))
 
@@ -938,7 +940,7 @@ def test_ufunc_corner_cases(odl_tspace_impl):
 
     # --- UFuncs with nin = 2, nout = 1 --- #
 
-    with pytest.raises(ValueError):
+    with pytest.raises(wrong_argcount_error):
         # Too few arguments
         x.__array_ufunc__(np.add, '__call__', x)
 

odl/test/space/tensors_test.py

@@ -1542,7 +1542,9 @@ def test_ufunc_corner_cases(odl_tspace_impl):
 
     # --- Ufuncs with nin = 1, nout = 1 --- #
 
-    with pytest.raises(ValueError):
+    wrong_argcount_error = ValueError if np.__version__<"1.21" else TypeError
+
+    with pytest.raises(wrong_argcount_error):
         # Too many arguments
         x.__array_ufunc__(np.sin, '__call__', x, np.ones((2, 3)))
 
@@ -1573,7 +1575,7 @@ def test_ufunc_corner_cases(odl_tspace_impl):
 
     # --- Ufuncs with nin = 2, nout = 1 --- #
 
-    with pytest.raises(ValueError):
+    with pytest.raises(wrong_argcount_error):
         # Too few arguments
         x.__array_ufunc__(np.add, '__call__', x)