Filter test files to exclude hidden and non-gleam files

[glennj]

Filter the files in the test directory to exclude possible bad ones.

Fixes #62

[ErikSchierboom]

Maybe instead of just reading in the test directory, the .meta/config.json file could be parsed?

[glennj]

Hmm, that would preclude students from uploading any additional test files. However I suppose the likelihood of that happening is extremely small.

[ErikSchierboom]

That's true 🤷

[glennj]

@lpil I think I'm running into a dependency problem with the tests I'm adding:

• I'm changing a file in the exercism_test_runner package
• However, the gleam.toml in the new test dir depends on exercism_test_runner, fetching the published package.

Do I need to publish my changes before I can test them?

$ bin/setup-locally.sh
Downloading packages
 Downloaded 14 packages in 0.11s
[...]
  Compiling exercism_test_runner
[...]
   Compiled in 6.24s
$ bin/run.sh bad_test_files $PWD/tests/bad_test_files{,}
Copying config and dependencies...
bad_test_files: compiling...
bad_test_files: testing...
   Compiled in 0.04s
    Running bad_test_files_test.main
exception error: #{function => <<"read_module">>,line => 75,
                   message => <<"Assertion pattern match failed">>,
                   module => <<"exercism/test_runner">>,
                   value => {error,{unexpected_token,panic,{position,0}}},
                   gleam_error => let_assert}
  in function  exercism@test_runner:read_module/1 (/Users/glennj/src/exercism/tracks/gleam-test-runner/packages/build/dev/erlang/exercism_test_runner/_gleam_artefacts/exercism@test_runner.erl, line 107)
  in call from gleam@list:do_map/3 (/Users/glennj/src/exercism/tracks/gleam-test-runner/packages/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@list.erl, line 119)
  in call from exercism@test_runner:main/0 (/Users/glennj/src/exercism/tracks/gleam-test-runner/packages/build/dev/erlang/exercism_test_runner/_gleam_artefacts/exercism@test_runner.erl, line 134)bad_test_files: done

Try moving the altered test_runner.gleam into the new test:

$ cp runner/src/exercism/test_runner.gleam tests/bad_test_files/build/packages/exercism_test_runner/src/exercism/test_runner.gleam
$ bin/run.sh bad_test_files $PWD/tests/bad_test_files{,}
[same exception as above]

Try moving the altered test_runner.gleam into the project's build hierarchy

$ cp runner/src/exercism/test_runner.gleam packages/build/packages/exercism_test_runner/src/exercism/test_runner.gleam
$ bin/run.sh bad_test_files $PWD/tests/bad_test_files{,}
Copying config and dependencies...
bad_test_files: compiling...
bad_test_files: testing...
   Compiled in 0.04s
    Running bad_test_files_test.main
.......
Ran 7 tests, 0 failed
bad_test_files: done

[lpil]

This repo contains both the Gleam test runner library, and also the Exercism test runner for Gleam that uses that library.

They are two different things and the library is distributed on Hex (so everyone can use it) so it needs to be published prior to being used by Exercism.