def test_keypoints_censure_scale_range_error():
 assert_raises(ValueError, CENSURE, min_scale=1, max_scale=2)

def test_keypoints_censure_scale_range_error ( ) : assert_raises ( ValueError , CENSURE , min_scale = 1 , max_scale = 2 )
difference between the the max_scale and min_scale parameters in keypoints_censure should be greater than or equal to two .