Github user revans2 commented on the issue:
https://github.com/apache/zookeeper/pull/157
@afine I updated the test to spy on the `LearnerZooKeeperServer` instance
and check if and when `takeSnapshot` was called. I think this fulfills your
desires, but with tests there can always be more. So, if you do want more tests
or other areas covered please let me know.
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