issue: #46217
The test was failing intermittently because it didn't wait for the
pipeline to finish processing messages before exiting. The test sent a
message to the pipeline and immediately returned, causing the deferred
Close() to execute before ProcessInsert, ProcessDelete, and UpdateTSafe
could be called.
Fix by:
- Moving message construction before mock expectations setup
- Adding a done channel to synchronize on UpdateTSafe completion
- Waiting for the signal before test exits
Signed-off-by: Wei Liu <wei.liu@zilliz.com>
046693eaf7