def test_other(self):
p = PersistentList()
p.insert(0, 2)
assert p == [2]
assert p.count(0) == 0
assert p.count(2) == 1
assert p.index(2) == 0
p.remove(2)
p.extend(PersistentList(interval(3)))
assert p == interval(3)
def other(self):
p = PersistentList()
p.insert(0, 2)
assert p == [2]
assert p.count(0) == 0
assert p.count(2) == 1
assert p.index(2) == 0
p.remove(2)
p.extend(PersistentList(interval(3)))
assert p == interval(3)
def test_iter(self):
p = PersistentList()
assert list(p) == []
p.extend([2,3,4])
assert list(p) == [2,3,4]
def iter(self):
p = PersistentList()
assert list(p) == []
p.extend([2, 3, 4])
assert list(p) == [2, 3, 4]
