fix: Fix the log leakages in integration tests

[ncloudioj]

References

JIRA: DISCO-3226

Description

Leaking unexpected logs could cause flaky tests in Merino.

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[misaniwere]

LGTM!

[misaniwere]

could this be the reason why AMO is also failing. does the failing test also depend on this fixture?

[ncloudioj]

Yup, very likely. I checked all the latest test failures, pretty much all of them were caused by log entry assertion errors. Prior to this patch, 6 seemingly unrelated log entries were spitted out from test_manifest.py. Even so when I only ran this test file alone. Probably, there is perhaps something similar running from curated recommedation tests I guess.

DEBUG    {"Timestamp": 1739221032008496896, "Type": "merino.utils.metrics", "Logger": "merino",  "EnvVersion": "2.0", "Severity": 7, "Pid":      metrics.py:48
                             66200, "Fields": {"taskName": "Task-303", "data": "merino.recommendation.prior.update.timing:17|ms|#application:merino-py,deployment.canary:0", "msg": "sending metrics"},
                             "severity": 100}
DEBUG    {"Timestamp": 1739221032010868992, "Type": "merino.utils.metrics", "Logger": "merino", "EnvVersion": "2.0", "Severity": 7, "Pid":      metrics.py:48
                             66200, "Fields": {"taskName": "Task-303", "data": "merino.recommendation.engagement.update.timing:21|ms|#application:merino-py,deployment.canary:0", "msg": "sending
                             metrics"}, "severity": 100}
INFO     {"Timestamp": 1739221032013295104, "Type": "merino.utils.cron", "Logger": "merino", "EnvVersion": "2.0", "Severity": 6, "Pid": 66200,     cron.py:65
                             "Fields": {"taskName": "Task-314", "duration": 0.026813709002453834, "msg": "Cron: successfully ran task fetch_recommendation_fakespot"}, "severity": 200}
DEBUG    {"Timestamp": 1739221032089231104, "Type": "merino.utils.metrics", "Logger": "merino", "EnvVersion": "2.0", "Severity": 7, "Pid":      metrics.py:48
                             66200, "Fields": {"taskName": "Task-303", "data": "merino.response.status_codes.200:1|c|#application:merino-py,deployment.canary:0", "msg": "sending metrics"}, "severity":
                             100}
DEBUG    {"Timestamp": 1739221032091535104, "Type": "merino.utils.metrics", "Logger": "merino",  "EnvVersion": "2.0", "Severity": 7, "Pid":      metrics.py:48
                             66200, "Fields": {"taskName": "Task-303", "data": "merino.providers.initialize.manifest:57|ms|#application:merino-py,deployment.canary:0", "msg": "sending metrics"},
                             "severity": 100}