Do not UNLISTEN while disconnected#785
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Signed-off-by: Snehil Shah <snehilshah.989@gmail.com>
Removed Process.flag(:trap_exit, true) from multiple tests to simplify the connection handling.
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We send the
UNLISTENquery unconditionally when removing the last subscriber, which can crash the process if there is no DB connection to receive it. Similar to how we have a safety mechanism for queuingLISTENqueries, I think we can have a simple guard that ignoresUNLISTENif the connection doesn't exist anymore.