def METHOD_NAME():
    # this should always work
    c = ct.AltConstraints(
        ct.Constraints(
            ct.EnsureFloat(),
            ct.EnsureRange(min=7.0, max=44.0)),
        ct.EnsureNone())
    assert_equal(c(7.0), 7.0)
    assert_equal(c(None), None)
    # this should always fail
    assert_raises(ValueError, lambda: c(77.0))