def test_database_api_delete(self, db: DatabaseAPI) -> None:
db[b'key-1'] = b'value-1'
assert b'key-1' in db
db.delete(b'key-1')
assert not db.exists(b'key-1')
assert b'key-1' not in db
def test_database_api_exists(self, db: DatabaseAPI) -> None:
assert db.exists(b'key-1') is False
db[b'key-1'] = b'value-1'
assert db.exists(b'key-1') is True
