def test_valid():
codec = Codec('secret_key')
sn = codec.encode([])
assert sn.is_valid
sn = codec.decode('')
assert not sn.is_valid
def test_expire():
codec = Codec('secret_key')
sn = codec.encode(1)
time.sleep(2)
assert sn.is_expired(0)
assert not sn.is_expired(10)
sn = codec.decode('')
assert not sn.is_expired(100)
def test_properties():
codec = Codec('secret_key')
sn = codec.encode({})
assert sn.obj is not None
assert sn.timestamp is not None
assert sn.tag is not None
sn = codec.decode('')
assert sn.obj is None
assert sn.timestamp is None
assert sn.tag is None
assert sn.token == ''
def test_valid():
codec = Codec(u'secret_key')
sn = codec.encode({})
assert codec.decode(sn.token).obj == {}
def test_invalid():
codec = Codec('secret_key')
sn = codec.encode({})
assert codec.decode(sn.token + b'x').obj is None
