def test_width_set_wrong(self):
"""Test of setting wrong value to 'width' attribute of a bit field."""
bf = BitField('bf_a')
with pytest.raises(ValueError):
bf.width = 0
def test_width_access(self):
"""Test of accessing to 'width' attribute of a bit field."""
bf = BitField('bf_a')
bf.width = 16
assert bf.width == 16