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utils.py

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from concurrent.futures import Future

from functools import wraps

from cassandra.cluster import Session

from mock import patch

def mock_session_pools(f):

"""

Helper decorator that allows tests to initialize :class:.`Session` objects

without actually connecting to a Cassandra cluster.

"""

@wraps(f)

def wrapper(*args, **kwargs):

with patch.object(Session, "add_or_renew_pool") as mocked_add_or_renew_pool:

future = Future()

future.set_result(object())

mocked_add_or_renew_pool.return_value = future

f(*args, **kwargs)

return wrapper