def test_get_offset_0_bit():
"""get_offset should return None if no bits are allocated to an offset"""
nose.assert_is_none(sim.get_offset("10110100", num_offset_bits=0))
def test_get_offset_2_bit():
"""get_offset should return correct 2 offset bits for an address"""
nose.assert_equal(sim.get_offset("11111101", num_offset_bits=2), "01")