def test_basic_usage(self):
d = RedisDeque('ghi', redis=self.redis)
assert d == ['g', 'h', 'i']
d.append('j')
d.appendleft('f')
assert d == ['f', 'g', 'h', 'i', 'j']
assert d.pop() == 'j'
assert d.popleft() == 'f'
assert d == ['g', 'h', 'i']
assert d[0] == 'g'
assert d[-1] == 'i'
assert list(reversed(d)) == ['i', 'h', 'g']
assert 'h' in d
d.extend('jkl')
assert d == ['g', 'h', 'i', 'j', 'k', 'l']
d.rotate(1)
assert d == ['l', 'g', 'h', 'i', 'j', 'k']
d.rotate(-1)
assert d == ['g', 'h', 'i', 'j', 'k', 'l']
assert RedisDeque(reversed(d),
redis=self.redis) == ['l', 'k', 'j', 'i', 'h', 'g']
d.clear()
with self.assertRaises(IndexError):
d.pop()
d.extendleft('abc')
assert d == ['c', 'b', 'a']
def test_repr(self):
d = RedisDeque(redis=self.redis)
assert repr(d) == 'RedisDeque([])'
d = RedisDeque('ghi', redis=self.redis)
assert repr(d) == "RedisDeque(['g', 'h', 'i'])"
d = RedisDeque(redis=self.redis, maxlen=2)
assert repr(d) == 'RedisDeque([], maxlen=2)'
d = RedisDeque('ghi', redis=self.redis, maxlen=2)
assert repr(d) == "RedisDeque(['h', 'i'], maxlen=2)"
def test_insert_into_full(self):
d = RedisDeque('gh', redis=self.redis, maxlen=3)
d.insert(len(d), 'i')
assert d == ['g', 'h', 'i']
with self.assertRaises(IndexError):
d.insert(len(d), 'j')
def test_append_trims_when_full(self):
d = RedisDeque('gh', redis=self.redis, maxlen=3)
d.append('i')
assert d == ['g', 'h', 'i']
d.append('j')
assert d == ['h', 'i', 'j']
d.appendleft('g')
assert d == ['g', 'h', 'i']
def test_rotate_zero_steps(self):
d = RedisDeque(('g', 'h', 'i', 'j', 'k', 'l'), redis=self.redis)
d.rotate(0)
assert d == ['g', 'h', 'i', 'j', 'k', 'l']
def test_popleft_from_empty(self):
d = RedisDeque(redis=self.redis)
with self.assertRaises(IndexError):
d.popleft()
def test_extend(self):
d = RedisDeque('ghi', redis=self.redis, maxlen=4)
d.extend('jkl')
assert d == ['i', 'j', 'k', 'l']
d.extendleft('hg')
assert d == ['g', 'h', 'i', 'j']
def test_maxlen_not_writable(self):
d = RedisDeque(redis=self.redis)
with self.assertRaises(AttributeError):
d.maxlen = 2
def test_persistent_deque_bigger_than_maxlen(self):
d1 = RedisDeque('ghi', redis=self.redis)
d1 # Workaround for Pyflakes. :-(
with self.assertRaises(IndexError):
RedisDeque(redis=self.redis, key=d1.key, maxlen=0)
def test_init_with_wrong_type_maxlen(self):
with unittest.mock.patch.object(Base, '__del__') as delete, \
self.assertRaises(TypeError):
delete.return_value = None
RedisDeque(redis=self.redis, maxlen='2')
def test_persistent_deque_bigger_than_maxlen(self):
d1 = RedisDeque('ghi')
with self.assertRaises(IndexError):
d2 = RedisDeque(key=d1.key, maxlen=0)