def METHOD_NAME(self, ones_zero):
    c = _correlation(ones_zero, axis=0, normalize=True)
    result = np.ones((10, 20))
    result[1::2, :] = -1
    np.testing.assert_array_equal(c, result)
    c = _correlation(ones_zero, axis=0, normalize=False)
    result = np.zeros((10, 20))
    result[0::2, :] = 5
    np.testing.assert_array_almost_equal(c, result)