def test_set_and_get_with_expiration(self):
self.assertTrue(Cache.set(self.key, self.value, time=1,
namespace=self.namespace))
cached_value = Cache.get(self.key, namespace=self.namespace)
self.assertEquals(self.value, cached_value)
time.sleep(1)
self.assertFalse(Cache.get(self.key, namespace=self.namespace))
def test_delete_existing_key_with_network_problem(self):
_original_delete = Item.delete
Item.delete = self.raise_exception
self.assertTrue(Cache.set(self.key, self.value))
self.assertEquals(Cache.delete(self.key), 0)
Item.delete = _original_delete
def test_flush_all_but_db_delete_fails(self):
_original_delete = db.delete
db.delete = self.raise_exception
self.assertTrue(Cache.set('1', self.value))
self.assertTrue(Cache.set('2', self.value))
self.assertFalse(Cache.flush_all())
db.delete = _original_delete
def test_parse_time_with_14_days_in_seconds(self):
seconds = 14 * 24 * 60 * 60
now = datetime.datetime.now()
then = now + datetime.timedelta(seconds=seconds)
expire_at = Cache._parse_time(seconds)
self.assertTrue((expire_at - then).seconds <= 5)
def test_long_without_namespace(self):
key = 'a' * 300
key_name = Cache._get_key_name(key)
hash_length = 64
self.assertNotEquals(key_name, key)
self.assertEquals(len(key_name), hash_length)
def test_get_with_delete_expired(self):
millenium_unixtime = 946706400
# Set the already expired item
self.assertTrue(Cache.set(self.key, self.value,
time=millenium_unixtime))
# Check if it exists in the Datastore
self.assertTrue(Item.all().filter('cache_key =', self.key).get())
# Try to get it should return None, but force to keep the item
self.assertEquals(Cache.get(self.key, delete_expired=False), None)
# Check again if it exists in the Datastore
self.assertTrue(Item.all().filter('cache_key =', self.key).get())
# Try to get it should return None and delete the item
self.assertEquals(Cache.get(self.key), None)
# Check again if it exists in the Datastore, it should have been del.
self.assertFalse(Item.all().filter('cache_key =', self.key).get())
def test_long_with_namespace(self):
key = 'a' * 300
namespace = 'prefix'
hash_length = 64
key_name = Cache._get_key_name(key, namespace=namespace)
self.assertNotEquals(key_name, ''.join([namespace, key]))
self.assertTrue(key_name.startswith(namespace))
self.assertEquals(len(key_name), sum([len(namespace), hash_length]))
def test_short_with_namespace(self):
key = 'whatever'
namespace = 'prefix'
key_name = Cache._get_key_name(key, namespace=namespace)
self.assertEquals(key_name, ''.join([namespace, key]))
def test_short_without_namespace(self):
key = 'whatever'
self.assertEquals(Cache._get_key_name(key), key)
def test_parse_time_with_32_days_in_seconds(self):
# Only 31 days in seconds are appropriate, otherwise it gets handled
# as a unix timestamp
seconds = 32 * 24 * 60 * 60
self.assertEquals(Cache._parse_time(seconds),
datetime.datetime.fromtimestamp(seconds))
def test_parse_time_with_zero(self):
self.assertEquals(Cache._parse_time(0), datetime.datetime(
year=datetime.MAXYEAR, month=12, day=31))
def test_parse_key_with_empty_string(self):
self.assertEquals(Cache._parse_key(''), '')
def test_parse_key_from_tuple(self):
self.assertEquals(Cache._parse_key(('what', 'ever')), 'ever')
def test_parse_key(self):
self.assertEquals(Cache._parse_key('whatever'), 'whatever')
def test_flush_all(self):
self.assertTrue(Cache.set('1', self.value))
self.assertTrue(Cache.set('2', self.value))
self.assertTrue(Cache.flush_all())
self.assertFalse(Item.all().count())
def test_replace(self):
self.assertFalse(Cache.replace(self.key, self.value))
self.assertTrue(Cache.set(self.key, self.value))
self.assertTrue(Cache.replace(self.key, 'new value'))
def test_add(self):
key = 'nonexistingkey%s' % str(random.random())
# Non existing key gets added
self.assertTrue(Cache.add(self.key, self.value))
# Existing key cannot get added
self.assertFalse(Cache.add(self.key, self.value))
def test_delete_existing_key(self):
self.assertTrue(Cache.set(self.key, self.value))
self.assertEquals(Cache.delete(self.key), 2)
def test_parse_key_from_long_tuple(self):
self.assertEquals(Cache._parse_key(('w', 'h', 'a', 't')), 'h')
def test_set_when_put_fails(self):
_original_put = Item.put
Item.put = self.raise_exception
self.assertFalse(Cache.set(self.key, self.value))
Item.put = _original_put
def test_delete_for_non_available_key(self):
key = 'nonexistingkey%s' % str(random.random())
self.assertEquals(Cache.delete(key), 1)
