def test_deleted_element_by_an_uncommited_transaction(self):
element = MVCCDocument.create(
self.txn,
{'key': 'value'}
)
element.save()
element.expire_ts(True)
txn = Transaction(ts=2)
element = MVCCDocument.load(txn, element.identifier)
element.expire_ts(True)
element.save()
txn = Transaction(ts=3)
self.assertTrue(MVCCDocument.load(txn, element.identifier))
def test_load_save(self):
element = MVCCDocument.create(
self.txn,
{'key': 'value'}
)
element.save()
element = MVCCDocument.load(self.txn, element.identifier)
self.assertEqual(element.get('key'), 'value')
def test_load_latest_version(self):
element = MVCCDocument.create(
self.txn,
{'key': 'value'}
)
element.save()
for x in range(10):
element.set('key', x)
element = MVCCDocument.load(self.txn, element.identifier)
self.assertEqual(element.get('key'), 9)
def test_delete_element(self):
element = MVCCDocument.create(
self.txn,
{'key': 'value'}
)
element.save()
txn = Transaction(ts=2)
element = MVCCDocument.load(txn, element.identifier)
element.expire_ts(True)
element.save()
txn = Transaction(ts=3)
txn.commited_ts = [1, 2]
self.assertRaises(
ElementNotFound,
MVCCDocument.load,
txn,
element.identifier
)