def test_intersection(self):
"Test intersection of two SimpleBitfields."
field = SimpleBitfield('110011')
field.intersection(SimpleBitfield('001100'))
self.assertEqual(field._d, int('000000', 2))
field = SimpleBitfield('110011')
field.intersection(SimpleBitfield('001110'))
self.assertEqual(field._d, int('000010', 2))
field = SimpleBitfield('110011')
field.intersection(SimpleBitfield('011100'))
self.assertEqual(field._d, int('010000', 2))
