def test_no_input_transition():
t = Transition([], [0])
state = State([4])
s2 = t.fire(state)
assert s2.tokens == [5]
def test_multi_in_out():
t = Transition([0, 1, 2, 3], [4, 5, 6])
state = State([1, 2, 3, 4, 0, 1, 2])
s2 = t.fire(state)
assert s2.tokens == [0, 1, 2, 3, 1, 2, 3]
def test_loop():
t = Transition([0], [0])
state = State([6])
s2 = t.fire(state)
assert s2.tokens == [6]
def test_in_and_out_transition():
t = Transition([0], [1])
state = State([6, 5])
s2 = t.fire(state)
assert s2.tokens == [5, 6]
def test_nothing_transition():
t = Transition([], [])
state = State([6])
s2 = t.fire(state)
assert s2.tokens == [6]
def test_no_output_transition():
t = Transition([0], [])
state = State([6])
s2 = t.fire(state)
assert s2.tokens == [5]
