def test_multipush(self):
i = [1, 2, 3, 4, 5]
g = PushBack.PushToBack(i.__iter__())
g.pushback(6)
assert g.next() == 1
g.pushback(7)
assert g.next() == 2
l = list(g)
assert l == [3, 4, 5, 6, 7]
g.pushback(8)
l = list(g)
assert l == [8]
l = list(g)
assert l == []
def test_simplepush(self):
i = [1, 2, 3, 4, 5]
g = PushBack.PushToBack(i.__iter__())
g.pushback(6)
l = list(g)
assert l == [1, 2, 3, 4, 5, 6]
def test_wrap(self):
i = [1, 2, 3, 4, 5]
g = PushBack.PushToBack(i.__iter__())
l = list(g)
assert i == l