bun test in a monorepo

[vitch]

I'm currently running bun test from the root of a bun monorepo and it's running all of my tests.

But now I need to do some cleanup afterEach test in a specific sub package and I can't figure out how to do this...

I can get it to work if I run bun test --preload in that particular package (or put a bunfig.toml in that package and run locally there) but I want it to work when running all tests across the monorepo and with my afterEach only happening after every test within this package.

I got it working pretty hackily like this:

// in root package.json
{
  "scripts": {
    "test": "bun run  --filter '*' test",
  }
}

// in sub-package/package.json
{
  "scripts": {
    "test": "bun test",
  }
}

// In sub-package/bunfig.toml
[test]
  root = "test"
  preload = ["./test/setup.ts"]

Then run bun run test at the root (not bun test).

But it doesn't feel ideal (not least because the output formatting is much worse).

Is there a better way? Should bun test in a monorepo just run bun test in each sub-package rather than searching for files to test from the root of the monorepo?

[Jarred-Sumner]

you could do

bun test packages/bacon packages/lettuce

This will match any test files that start with the path packages/bacon or packages/lettuce

edit: this won't work within package's preloads

[vitch]

I just tried but as you say in the edit, this doesn't respect the bunfig.toml for the nested package.

AFAICT it is just restricting the search paths for test files. I am looking for a way to respect the fact that a monorepo is made up of separate packages which may need different configurations...

[zeyuri]

hey @Jarred-Sumner have this limitation of the preload been addressed? Its a really nice feature that is holding me up, might need to move to vitest because of this