def METHOD_NAME(self):
    """Test that a constraint is created, if the input coordinates are
    descending."""
    values = [0.1, 0.03]
    result = create_sorted_lambda_constraint(self.coord_name, values)
    self.assertIsInstance(result, iris.Constraint)
    self.assertEqual(list(result._coord_values.keys()), [self.coord_name])
    result_cube = self.precip_cube.extract(result)
    self.assertArrayAlmostEqual(result_cube.data, self.expected_data)