--rerun-fails always makes goleak and datarace errors pass after re-running

[odubajDT]

Description

When using --rerun-fails=1 option with gotestsum, all of the tests pass. The behavior is very deterministic. Instead when removing the option, I am getting a lot of goleak and data-race errors. It's quite interesting that the behavior with re-running the tests is very deterministic, as I would expect from a big number of tests and multiple runs, it should fail at least once also in the re-run. It seems to me that in the 2. run, the gotestsum just ignores the errors which popped up during the first run

[dnephin]

Hello, thank you for the bug report! Can you try with --debug? That will print the exact go test command that is run.

The re-runs are done one test at a time because of some limitations with the go test -run flag. Those limitations have since been fixed I believe, so it's possible we can switch to running one package at a time instead.

The tests may be passing because the data-race is due to a goroutine that is leaked from a previous test. When only a single test is run the data-race is gone. I'm less sure about the goleak passing. It's also possible the rerun is not setting the correct flags somehow, but we should see that with --debug.

[odubajDT]

Thanks for the response!

first variant with --rerun-fails=1 --debug options:

gotestsum --rerun-fails=1 --debug --packages="./..." -- -race -timeout 600s -parallel 4 --tags=""
exec: [go test -json -race -timeout 600s -parallel 4 --tags= ./...]

rerun the same test:

exec: [go test -json -test.run=^$ -race -timeout 600s -parallel 4 --tags= github.com/open-telemetry/opentelemetry-collector-contrib/receiver/awscontainerinsightreceiver/internal/cadvisor]

Full log:

/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/.tools/gotestsum --rerun-fails=1 --debug --packages="./..." -- -race -timeout 600s -parallel 4 --tags=""
exec: [go test -json -race -timeout 600s -parallel 4 --tags= ./...]
go test pid: 8235
go: downloading gopkg.in/evanphx/json-patch.v4 v4.12.0
✓  . (1.071s)
∅  internal/cadvisor/testutils
✖  internal/cadvisor (494ms)
✓  internal/cadvisor/extractors (1.108s)
✓  internal/ecsInfo (1.033s)
✓  internal/host (1.039s)
∅  internal/metadata
∅  internal/stores/kubeletutil
✓  internal/k8sapiserver (1.06s)
✓  internal/stores (1.072s)

DONE 98 tests, 1 failure in 74.185s

exec: [go test -json -test.run=^$ -race -timeout 600s -parallel 4 --tags= github.com/open-telemetry/opentelemetry-collector-contrib/receiver/awscontainerinsightreceiver/internal/cadvisor]
go test pid: 15675
✓  internal/cadvisor (1.018s)

[odubajDT]

On the other side, the same test without the --rerun-fails option

/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/.tools/gotestsum --debug --packages="./..." -- -race -timeout 600s -parallel 4 --tags=""
exec: [go test -json -race -timeout 600s -parallel 4 --tags= ./...]
go test pid: 8394
go: downloading gopkg.in/evanphx/json-patch.v4 v4.12.0
∅  internal/cadvisor/testutils
✖  internal/cadvisor (491ms)
✓  . (1.091s)
✓  internal/cadvisor/extractors (1.084s)
✓  internal/ecsInfo (1.039s)
✓  internal/host (1.043s)
∅  internal/metadata
∅  internal/stores/kubeletutil
✓  internal/k8sapiserver (1.058s)
✓  internal/stores (1.066s)

=== Failed
=== FAIL: internal/cadvisor  (0.00s)
PASS
goleak: Errors on successful test run: found unexpected goroutines:
[Goroutine 6 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc000059b20, 0xc00033ac20)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 5
make[2]: *** [../../Makefile.Common:130: test] Error 1
make[1]: *** [Makefile:187: receiver/awscontainerinsightreceiver] Error 2
make: *** [Makefile:127: gotest] Error 2
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 7 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc000059b60, 0xc00033ac40)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 5
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 8 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc000059bc0, 0xc00033ac50)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 5
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 9 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc000059c00, 0xc00033ac60)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 5
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 36 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a4240, 0xc00018d700)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 35
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 37 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a4280, 0xc00018d720)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 35
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 38 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a42e0, 0xc00018d730)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 35
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 39 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a4320, 0xc00018d740)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 35
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 44 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a43a0, 0xc00018daf0)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 43
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 45 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a43e0, 0xc00018db20)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 43
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 46 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a4440, 0xc00018db40)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 43
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
 Goroutine 47 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.(*MapWithExpiry).sweep(0xc0001a4480, 0xc00018db60)
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:142 +0x1b0
created by github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics.NewMapWithExpiry in goroutine 43
	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/internal/aws/metrics/metric_calculator.go:126 +0x265
]
FAIL	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/awscontainerinsightreceiver/internal/cadvisor	0.491s

DONE 98 tests, 1 failure in 72.943s

[odubajDT]

Full logs can be found as part of this PR open-telemetry/opentelemetry-collector-contrib#35413

I created it just for showcasing the problem