Split test fixtures into different folders per algorithm

[nicoburns]

What do you think about splitting the test_fixtures (and corresponding generated files) into multiple folders?
I think one folder per algorithm and maybe one for mixed tests would be useful to organize things a bit.
I'm not sure how hard that would be to integrate in the generation script though.

Originally posted by @TimJentzsch in #474 (review)

This would give us the following folders:

• flex
• grid
• block
• leaf
• gridflex
• blockflex
• blockgrid

Note:grid, block and leaf algorithm tests are prefixed with grid/block/leaf. The remaining unprefixed tests are all flexbox tests. We would likely also need to reorganise the generated tests themselves a little. Perhaps by nesting them in modules corresponding to the directory they originate in.

[aemreaydin]

I would like to work on this issue. This is going to be my first issue on taffy but I think I have a simple understanding of what needs to be done here.

1. Move files prefixed with the given categories (flex, grid, etc.) in test_fixtures into their respective categories. Unprefixed ones can go into the flex folder.
2. Update the gentest code to respect the file structure when generating the tests.

[alice-i-cecile]

Sounds great: let us know if you have any questions :)

[nicoburns]

Your understanding sounds correct to me. One detail I would add is that there are two aspects to part 2:

• The test generation script needs to be updated to look for test fixtures in their new nested locations
• The test generation script (probably) needs to be updated to output tests in nested modules.

[aemreaydin]

Sounds good, that's what I was thinking as well. Will let you know if I have quetsions.

[aemreaydin]

Two questions;

1. Should I keep the files prefixed with "x" in the test_fixtures folder?
2. To recursively work with the directory, can I add the walkdir crate?

[nicoburns]

Should I keep the files prefixed with "x" in the test_fixtures folder?

Yes. These are tests that are temporarily disabled, but that we hope to be enable later. They should be grouped under the directory that would be in if they didn't have the x prefix, but the x prefix should be retained

To recursively work with the directory, can I add the walkdir crate?

Yes, that's fine :)