runner should look for files defined in config

[rikedyp]

Right now we just search for "Test_*.aplf" and expected the test function to import the solution function itself. We expect exercise folders to be Linkable(#8), which will remove the need to import the solution function explicitly within the test function, but also it might make sense to use the config files for exercises to at least determine which files correspond to tests.

[SleeplessByte]

[...] the config files for exercises to at least determine which files correspond to tests.

This is what many (but not all) test runners do. Some of them will default to something "guessed" or "all test files", but regardless, relying on the config allows you to do pretty interesting things.

[ErikSchierboom]

Yeah I highly recommend using the config files for determining the test files.

[jonocarroll]

FYI, an example of this config (in our pilot repo) is https://github.com/Dyalog/exercism/blob/main/exercises/practice/acronym/.meta/config.json#L14

    "test": [
      "Test_Acronym.aplf"
    ],