test(network): fix race in TestNetworkIntegration_PrivateTransaction/event_received (backport of #4512) - #4513
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…event_received node2 publishes a NATS event for every transaction it receives, so the subtest gets two messages: the bootstrap DID document and the private TX. The test waited for any message, returned on the first one and closed the connection, after which the second message's ack failed with "nats: connection closed" and asserted against a completed test. Wait for the private TX event specifically, record its ack error under the mutex and assert it on the test goroutine. Assisted-by: AI (cherry picked from commit b788cd3)
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September 9, 2026 13:06
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Backport of #4512 to V6.2. Fixes the flaky
TestNetworkIntegration_PrivateTransaction/event_receivedseen on #4494 (nats: connection closedatnetwork_integration_test.go:564).node2 publishes a NATS event for every transaction it receives, so the subtest gets two messages: the bootstrap DID document transaction and the private TX. The subtest waited for any message, returned on the first one and closed the connection through the deferred
conn.Close(). The second message'smsg.Ack()then failed withnats: connection closed, and the callback asserted against a test that had already completed.The subtest now waits for the private TX event specifically, records its ack error under the mutex and asserts it on the test goroutine. Other messages are acked without asserting. The wait timeout is raised from 100ms to
defaultTimeout. Verified withgo test -race -count=5onTestNetworkIntegration_PrivateTransaction.