def test_list_del(list):
list.rpush('blah1', 'blah2', 'blah3')
assert len(list) == 3
list.ltrim(0, 1)
assert len(list) == 2
list.ltrim(0, 0)
assert len(list) == 1
def test_list_read(list):
list.rpush('blah1', 'blah2', 'blah3')
all_elems = list.lrange(0, -1)
assert all_elems == ['blah1', 'blah2', 'blah3']
assert list[1] == 'blah2'
assert list.lindex(2) == 'blah3'
right_elem = list.rpop()
assert len(list) == 2
assert right_elem == 'blah3'
left_elem = list.lpop()
assert len(list) == 1
assert left_elem == 'blah1'
left_elem = list.lpop()
assert len(list) == 0
assert left_elem == 'blah2'
def test_list_push(list):
list.rpush('blah1', 'blah2')
assert len(list) == 2
list.lpush('blah0')
assert len(list) == 3
assert list[0] == 'blah0'
