Remove flow runner heartbeat tests #458
Merged
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Closes #456 🙏
I believe we were seeing cryptic failures due to mocking issues. The mocks are not easily shared across threads / processes and caused all sorts of other issues. Consequently I removed the flow runner heartbeat tests entirely and only left the task runner tests so we have some confidence in the core implementation. FlowRunner heartbeats will need to be delegated to integration tests (via https://github.com/PrefectHQ/cloud/issues/196) until we can come up with something more clever.