How to only run a subset of the standard library tests?

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1

While hacking on the standard library, how do I only run a subset of the standard library tests (they seem to take a while on my little laptop)?

I have already tried:

zig build test-std --test-filter readStruct
2

well rather helpfully, it emits test failures as it goes…

Maybe I just need to let it run at least once to fill the cache

3

Check zig build --help for the options:

...
  -Dtest-filter=[list]         Skip tests that do not match any filter
  -Dtest-target-filter=[list]  Skip tests whose target triple do not match any filter
...
4

Also check out the Contributing guide, in particular Directly Testing the Standard Library with zig test

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