gotestyourself / gotestyourself/gotestsum

passed reruns do not cache correctly?

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#351 6 comments 1 reaction 0 assignees View on GitHub

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Dominant language
Go
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Description

This is kind of surprising behavior, unless you know details about how Go does test caching.

When using gotestsum --rerun-fails, if the first run fails but the package ultimately passes, that result doesn't really get cached.

This is because go test doesn't treat -run specially. It doesn't cache the result at a function level at all. I did more investigation and a repro here: https://github.com/nfi-hashicorp/gotestsum-rerun-caching

I'm not sure there's anything to be done about this?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked gotestsum-rerun-caching reproduction and the --rerun-fails flow. Compare the first failing run and subsequent package run under Go's test cache; done means establishing whether gotestsum can alter this behavior or documenting the limitation.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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