feat: test file generator

[S-ecki]

Integrates generation of test files. Usage is documented in readme and comments.

[S-ecki]

@dumazy would appreciate a short review :)
I dont know why, but I couldnt add you as a reviewer 🤔

[dumazy]

Should we keep the Puzzle Input group commented out by default to prevent the tests from failing?

[dumazy]

Else the test suite would still fail until you provide the _puzzleSolutionPart1 and _puzzleSolutionPart2 variables and make it less clear that your solution worked.

[S-ecki]

That's a good point! Pushed the changes

[dumazy]

We could be a bit more "smart" about it and skip the test if the solution hasn't been filled in:

const _puzzleSolutionPart1 = null;
const _puzzleSolutionPart2 = null;

group(
    'Day 01 - Puzzle Input',
    () {
      final day = Day01();
      test(
        'Part 1',
        skip: _puzzleSolutionPart1 == null
            ? 'Skipped because _puzzleSolutionPart1 is null'
            : false,
        () => expect(day.solvePart1(), _puzzleSolutionPart1),
      );
      test(
        'Part 1',
        skip: _puzzleSolutionPart2 == null
            ? 'Skipped because _puzzleSolutionPart2 is null'
            : false,
        () => expect(day.solvePart1(), _puzzleSolutionPart2),
      );
    },
  );

[S-ecki]

That is perfect! I will add and commit it! 🚀
Was also thinking about skipping the tests without touching the actual test code, but stopped at the thought of a shouldTest boolean set by the user 😅
Thanks a lot! 💙

[dumazy]

Should this be a different value than 0, Like -1 or null? The tests would pass by default since the default return value is 0 as well. Not sure if this is the desired behaviour

[S-ecki]

This would indeed pass at the start, which might not be great from a purist POV.
But as this will not pass as soon as the user adds the actual solution from the example (or adds his solution) - and I expect them to do this when they use the test - I think it is ok.
An even bigger case for me to leave it as is: The examplePart2 will not be distracting/annoying (red 😅) until you acutally start to work at it :)

[dumazy]

Good point 👍

[dumazy]

LGTM, just want to hear your thoughts about the conditional skip in one of the earlier threads. Thanks for adding this! 👏