Can you please expand on how the files would be used compared to directly running the stale tests?
Note there is also https://github.com/elixir-lang/elixir/issues/14393, but it is currently unclear if it could be used for this purpose. I asked Andrea to add more context, I recommend following the discussion there too. *José Valimhttps://dashbit.co/ <https://dashbit.co/>* On Sat, May 10, 2025 at 00:20 'Noah Betzen' via elixir-lang-core < elixir-lang-core@googlegroups.com> wrote: > Currently `mix test --stale` will do some checks for code that has been > updated since the last test suite run. Relevant code: > https://github.com/elixir-lang/elixir/blob/4fa224099730f59b19912e605a888bab68da6e5b/lib/mix/lib/mix/compilers/test.ex#L119-L176 > > For the purposes of larger Elixir projects and CI, it'd be nice to fetch > the list of tests that need to be rerun but not rerun them in the same > command. > > This has partially been brought up before: > https://elixirforum.com/t/is-there-a-way-to-predetermine-which-tests-and-why-would-be-run-on-mix-test-stale/48325 > > The most basic implementation idea I had for this was `mix test > --print-stale` which prints all currently stale tests to stdout (or to a > file?). > > Another possibly nice feature would be the ability to provide a commit > hash similar to Credo's git diff > https://hexdocs.pm/credo/diff_command.html that shows which tests are > "stale" between two points in time. The usefulness of this idea may be > limited. > > tldr I want to be able to configure my CI to not run ALL tests on every > single PR. There are other ways to do this, but providing the data that > `mix test --stale` uses to determine staleness seems like a great start! > > -- > You received this message because you are subscribed to the Google Groups > "elixir-lang-core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elixir-lang-core+unsubscr...@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/elixir-lang-core/906a55e5-1b0d-4f4b-813e-43d5afd35b46n%40googlegroups.com > <https://groups.google.com/d/msgid/elixir-lang-core/906a55e5-1b0d-4f4b-813e-43d5afd35b46n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4Kzr8Dz5kzT9JkE35zhJMDD2XHScf1Vzp634CeLiROxxg%40mail.gmail.com.
