def test_pseudo_enqueue():
sleft = Stack()
sright = Stack()
q = PseudoQueue(sleft, sright)
q.enqueue("apple")
actual = q.left.top.value
excepted = "apple"
assert actual == excepted
def test_pseudo_dequeue():
sleft = Stack()
sright = Stack()
q = PseudoQueue(sleft, sright)
q.enqueue("apple")
q.enqueue("bananas")
q.enqueue("cucumbers")
actual = q.dequeue()
excepted = "apple"
assert actual == excepted
def test_pseudo_enqueue_multi():
sleft = Stack()
sright = Stack()
q = PseudoQueue(sleft, sright)
q.enqueue("apple")
q.enqueue("bananas")
q.enqueue("cucumbers")
actual = q.left.top.value
excepted = "cucumbers"
assert actual == excepted
def test_push_onto_full_queue():
s = Stack()
s.push("apple")
s.push("cucumber")
s.push("phone")
actual = s.top.value
excepted = "phone"
assert actual == excepted
def test_stack_has_top_queue():
s = Stack()
assert s.top is None
def test_pseudo_has_right_queue():
sleft = Stack()
sright = Stack()
q = PseudoQueue(sleft, sright)
assert q.right.top is None
def test_peek_queue():
s = Stack()
s.push("apple")
actual = s.peek()
expected = "apple"
assert actual == expected
def test_push_onto_empty_queue():
s = Stack()
s.push("apple")
actual = s.top.value
excepted = "apple"
assert actual == excepted