def test_confirm_matrix_string(self):
confirm_matrix_string = confirm_matrix(bad_matrix_buried_string)
self.assertEqual(confirm_matrix_string,
'Argument is a 2-dimensional list')
def test_confirm_matrix_nested_raises(self):
with self.assertRaises(Exception) as context:
confirm_matrix(bad_matrix_nested)
self.assertEqual(type(context.exception), TypeError)
self.assertEqual(str(context.exception),
'Argument must be a 2-dimensional list')
def test_confirm_matrix_scalars(self):
confirm_matrix_scalars = confirm_matrix(first_matrix)
self.assertEqual(confirm_matrix_scalars,
'Argument is a 2-dimensional list')