fix race condition in Test_StartStop#1700
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mdelapenya merged 2 commits intotestcontainers:mainfrom Oct 13, 2023
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FYI, all the tests seem to pass reliably on my system after this one :) |
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@mdelapenya can we try re-running these tests? This change only just for log messages to come through before stopping the producer. I skimmed some of the error messages and they seem pretty strange: I also just re-ran make all-tests locally and it passed... very strange. |
mdelapenya
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I left two comments to be addressed before the merge. They are not blockers in any case, but want to check with you first.
Said that, LGTM, thanks for this!
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Updated commit with the requested changes. 👍 |
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LGTM, thanks for this! Never had time myself to debug the flakiness in this test. Really appreciate your efforts!
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* main: (137 commits) Fix wrong module names (testcontainers#1776) docs: add default options to k6 module (testcontainers#1744) fix race condition in Test_StartStop (testcontainers#1700) chore(deps): bump github.com/aws/aws-sdk-go-v2/{service/s3,credentials,config} in /modules/localstack (testcontainers#1773) chore(deps): bump cloud.google.com/go/{datastore,bigtable,spanner} in /modules/gcloud (testcontainers#1774) chore(deps): bump golang.org/x/net from 0.15.0 to 0.17.0 (testcontainers#1772) docs: Fix typo and mention the relevant function name in doc (testcontainers#1745) DOCKER_HOST var typo (testcontainers#1743) feat: Add Cassandra module (testcontainers#1726) K6 module (testcontainers#1721) Rancher Desktop instructions (testcontainers#1724) chore(deps): bump github.com/shirou/gopsutil/v3 from 3.23.8 to 3.23.9 (testcontainers#1720) chore(deps): bump urllib3 from 2.0.5 to 2.0.6 (testcontainers#1718) chore(deps): bump github.com/twmb/franz-go/pkg/kadm in /modules/redpanda (testcontainers#1714) chore(deps): bump github.com/couchbase/gocb/v2 in /modules/couchbase (testcontainers#1704) chore(deps): bump github.com/neo4j/neo4j-go-driver/v5 in /modules/neo4j (testcontainers#1713) chore(deps): bump github.com/nats-io/nats.go in /modules/nats (testcontainers#1705) chore(deps): bump cloud.google.com/go/firestore from 1.12.0 to 1.13.0, google.golang.org/api from 0.142.0 to 0.143.0 and cloud.google.com/ge, google.golang.org/api from 0.142.0 to 0.143.0 and cloud.google.com/go/bigquery from 1.53.0 to 1.55 in /modules/gcloud (testcontainers#1716) chore(deps): bump github.com/aws/aws-sdk-go-v2/service/s3 from 1.39.0 to 1.40.0 and github.com/aws/aws-sdk-go from 1.45.15 to 1.45.19 in /modules/localstack (testcontainers#1717) chore: prepare for next minor development cycle (0.26.0) ...
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* main: (137 commits) Fix wrong module names (testcontainers#1776) docs: add default options to k6 module (testcontainers#1744) fix race condition in Test_StartStop (testcontainers#1700) chore(deps): bump github.com/aws/aws-sdk-go-v2/{service/s3,credentials,config} in /modules/localstack (testcontainers#1773) chore(deps): bump cloud.google.com/go/{datastore,bigtable,spanner} in /modules/gcloud (testcontainers#1774) chore(deps): bump golang.org/x/net from 0.15.0 to 0.17.0 (testcontainers#1772) docs: Fix typo and mention the relevant function name in doc (testcontainers#1745) DOCKER_HOST var typo (testcontainers#1743) feat: Add Cassandra module (testcontainers#1726) K6 module (testcontainers#1721) Rancher Desktop instructions (testcontainers#1724) chore(deps): bump github.com/shirou/gopsutil/v3 from 3.23.8 to 3.23.9 (testcontainers#1720) chore(deps): bump urllib3 from 2.0.5 to 2.0.6 (testcontainers#1718) chore(deps): bump github.com/twmb/franz-go/pkg/kadm in /modules/redpanda (testcontainers#1714) chore(deps): bump github.com/couchbase/gocb/v2 in /modules/couchbase (testcontainers#1704) chore(deps): bump github.com/neo4j/neo4j-go-driver/v5 in /modules/neo4j (testcontainers#1713) chore(deps): bump github.com/nats-io/nats.go in /modules/nats (testcontainers#1705) chore(deps): bump cloud.google.com/go/firestore from 1.12.0 to 1.13.0, google.golang.org/api from 0.142.0 to 0.143.0 and cloud.google.com/ge, google.golang.org/api from 0.142.0 to 0.143.0 and cloud.google.com/go/bigquery from 1.53.0 to 1.55 in /modules/gcloud (testcontainers#1716) chore(deps): bump github.com/aws/aws-sdk-go-v2/service/s3 from 1.39.0 to 1.40.0 and github.com/aws/aws-sdk-go from 1.45.15 to 1.45.19 in /modules/localstack (testcontainers#1717) chore: prepare for next minor development cycle (0.26.0) ...
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What does this PR do?
Fixes an intermittent failure in Test_StartStop caused by a race condition with the TestLogConsumer and the test itself. The root of the issue is that on certain systems (like my slow M1 Macbook) it can take a while for the producer to spin up, mean while the old producer is still producing. The cleanest way to fix this is just to update the TestLogConsumer to publish log lines and then wait for the expected lines before proceeding, in particular the ones after we call StartLogProducer for the second time.
Why is it important?
Fixes a test that can sometimes fail, particularly on slower systems.
Follow-ups
There's another potential race condition inside the Log Producer Start/Stop logic. I'll submit it as a separate PR since it didn't actually solve this race condition when I tried it first, but it seems like it's a good idea to implement still.