def test_rus_sample_wt_fit():
 rus = RandomUnderSampler(random_state=RND_SEED)
 assert_raises(RuntimeError, rus.sample, X, Y)

def test_rus_sample_wt_fit ( ) : rus = RandomUnderSampler ( random_state = RND_SEED ) assert_raises ( RuntimeError , rus . sample , X , Y )
test either if an error is raised when sample is called before fitting .