Use thread with timeout instead of setting env var in unit tests #66
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Resolves #64 by wrapping the Kafka Consumer creation logic in a thread. The
recv_timeoutmethod is then utilized to wait a limited time for the connection and abort if none can be made. This is a short-circuit of the eventual timeout that the Kafka crate would reach on its own, albeit much later than the 1 second hardcoded here.Open question: should the timeout duration be a configurable environment variable as well?