def test_false_positive_rate1():
    est_positive = [True, True]
    est_negative = [False,False]
    
    result = false_positive_rate(est_positive,est_negative)
    assert_almost_equal(result,0.0)
def test_false_positive_rate3():
    est_positive = [False, False]
    est_negative = [False,False]
    
    result = false_positive_rate(est_positive,est_negative)
    assert_almost_equal(result,2/4.0)