code: def test_mean_cutoff():
      x = [1] * 5 + [2] * 6 + [3] * 8
      cutoff = "mean"
      expected = (-4.007095978613213, 6.146988816717466e-05)
      results = runstest_1samp(x, cutoff=cutoff, correction=False)
      assert_almost_equal(expected, results)
  
imports: from numpy.testing import assert_almost_equal
  from statsmodels.sandbox.stats.runs import runstest_1samp
label_desc: Use image node_id 1 for calling a global function with example usage: test_mean_cutoff() without return types