def test_check_bell(self):
for ix in xrange(4):
q = Qubits.bell(ix)
assert self.check_bell(q) == ix, "incorrect for {0:d}".format(ix)
def test_bell_state_change_3(self):
q = Qubits.bell(0)
self.assert_signs(q, [(0, 1), (3, 1)])
self.bell_state_change_3(q)
self.assert_signs(q, [(1, 1), (2, -1)])
