[Bug]: marker_uitest doesn't handle paths correctly, causing $DIR replacements to fail

[xFrednet]

Summary

Marker's ui test crate provides the simple_ui_test_config! macro, with uses tests/ui as the default hard-coded path. Running the tests on windows will result in path with different types of separators, like tests/ui\windows.rs. This is also the reason why the $DIR replacement has been weird in this repo.

@Alexendoo suggested the following nice fix:

std::path::PathBuf::from_iter(std::path::Path::new($ui_dir))

And also mentioned another bug:

p.s. this $ui_dir isn't used docs.rs/marker_uitest/latest/src/marker_uitest/lib.rs.html#33

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This bug only effects windows and there are workarounds, by either not testing on windows (this is what markers lint-crate-template does) or avoiding the macro: rust-marker/marker-example-lints#5. I'm uncertain if we should have a point release, maybe if there are more bugs I've missed

Version

cargo-marker 0.3.0

Context

cc: oli-obk/ui_test#177