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tests/run: fix flaky RunAttachTermination test - #5303
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@## master #5303 +/- ##
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- Coverage 61.45% 61.45% -0.01%
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Files 299 299 Lines 20856 20855 -1 ==========================================
- Hits 12818 12816 -2 - Misses 7122 7124 +2 + Partials 916 915 -1 |
laurazard
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Jul 29, 2024
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@thaJeztah@vvoland can you TAL? |
vvoland
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thaJeztah
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overall LGTM; left two comments / questions
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oh! LOL, I saw failures, and see you just pushed - probably need to remove the import as well |
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Turns out the version was set for a reason. I added a comment. Edit: aaahh I commented the wrong SHA. I'll fix it. |
This test was just incorrect (and testing incorrect behavior): it was checking that `docker run` exited with a `context canceled` error after signalling the CLI/cancelling the command's context, but this was incorrect (and was fixed in 991b130 - which was when this test started failing). However, since this test assertion was happening inside of a goroutine, it would sometimes pass if this assertion didn't get to run before the test suite terminated. It was flaky because sometimes this assertion inside the goroutine did get to execute, but after the test finished execution, which is a big no-no. As an aside, assertions inside goroutines are generally bad, and `govet` even has a linter for this (but it only catches `t.Fatal` and `t.FailNow` calls and not `assert.Xx`. Signed-off-by: Laura Brehm <laurabrehm@hey.com>
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- What I did
This test was just incorrect (and testing incorrect behavior): it was checking that
docker runexited with acontext cancelederror after signalling the CLI/cancelling the command's context, but this was incorrect (and was fixed in991b130 - which was when this test started failing).
However, since this test assertion was happening inside of a goroutine, it would sometimes pass if it didn't get to run before the test suite terminated. It was flaky because sometimes the assertion inside the goroutine did get to execute, but after the test finished execution, which is a big no-no.
As an aside, assertions inside goroutines are generally bad, and
goveteven has a check for this (but it only catchest.Fatalandt.FailNowcalls and notassert.Xx).- How I did it
Fixed
RunAttachTerminationto test for the correct behavior, and generally cleaned the tests up a bit. Also added another test for the general/not SIGINT'ed case.- How to verify it
go test -v -count=1 -run=TestRunAttach ./cli/command/container/...- Description for the changelog
- A picture of a cute animal (not mandatory but encouraged)