Add mix test --dry-run flag #14499
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Add mix test --dry-run flag #14499
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Nezteb
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May 15, 2025
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So, implementation-wise I think we might need to take a different approach. Right now, I see two main issues:
- We're not running
ExUnit.Formatters on dry runs—I think we might want to. Basically, the only thing we want--dry-runto do is to literally skip executing the body of tests (+setup/setup_allcalls and whatnot), but everything else would be the same. - We are printing test files, but this doesn't give us information about what tests (or test cases even, if there are >1 test cases in a file) would run. I think this is important. Think of using
--dry-runto answer the question "if I pass this--excludeoption, how many tests will be skipped"?.
Do these points make sense? I am not even sure this is very feasible, so we'd need to sort of proof-of-concept this.
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Aims to address #14393