def test_extreme_oom_round_down(self):
        tiny_EiB = bitmath.EiB.from_other(bitmath.Bit(1))
        self.assertIs(type(tiny_EiB.best_prefix()), bitmath.Bit)

    ##################################################################
    # These tests verify that when we use the preferred prefix 'NIST'
    # we get a NIST type unit back.
    #
    # One test for each case. First, start with an SI unit, second,
    # start with a NIST unit
NIST: 1 Bit (as a EiB()) rounds down into a Bit()
dataset/ETHPy150Open tbielawa/bitmath/tests/test_best_prefix_NIST.py/TestBestPrefixNIST.test_extreme_oom_round_down