def METHOD_NAME():
    test = PPTest(alpha=0.05, lshort=True)
    pval, do_diff = test.should_diff(austres)
    assert do_diff
    # Result from R code: 0.9786066
    # > pp.test(austres, lshort=TRUE)$p.value
    assert_almost_equal(pval, 0.9786066, decimal=5)
    # test n diffs
    assert ndiffs(austres, test='pp', max_d=2) == 1
    # If we use lshort is FALSE, it will be different
    test = PPTest(alpha=0.05, lshort=False)
    pval, do_diff = test.should_diff(austres)
    assert do_diff
    # Result from R code: 0.9514589
    # > pp.test(austres, lshort=FALSE)$p.value
    assert_almost_equal(pval, 0.9514589, decimal=5)
    assert ndiffs(austres, test='pp', max_d=2, lshort=False) == 1