Add test.coveragePathIgnorePatterns option

[jakeboone02]

What does this PR do?

• Fixes Add bun:test option similar to Jest's coveragePathIgnorePatterns #4021.

Adds a coveragePathIgnorePatterns option to bunfig.toml similar to Jest's option of the same name.

Per #4021 (comment), the value can be a glob pattern or an array of glob patterns. File paths matching any of the globs will be ignored for the purpose of coverage % calculation and reporting.

I do have a couple of questions/concerns:

• If all tested file paths are ignored (e.g., "**") and the coverage reporter is "lcov", the lcov.info file is created but left empty. Seems maybe technically correct, but LCOV processing tools might error (genhtml definitely errors; I'm not sure about others).

• The glob matcher seems strict to me, at least in this context. For example, "*.js" won't match anything but "**/*.js" will. Probably not a big deal, but we might consider relaxing it a little. I don't have an opinion either way.

• Documentation or TypeScript types

• Code changes

How did you verify your code works?

I wrote automated tests.

• I checked the lifetime of memory allocated to verify it's (1) freed and (2) only freed when it should be
• I included a test for the new code, or an existing test covers it
• (I'm pretty sure this is N/A) JSValue used outside outside of the stack is either wrapped in a JSC.Strong or is JSValueProtect'ed

[github-actions]

❌ @Jarred-Sumner, your commit has failing tests :(

💪 1 failing tests Darwin AARCH64

• test/cli/test/coverage.test.ts 2 failing

💻 1 failing tests Darwin x64 baseline

• test/cli/test/coverage.test.ts 2 failing

💻 1 failing tests Darwin x64

• test/cli/test/coverage.test.ts 2 failing

🐧💪 1 failing tests Linux AARCH64

• test/cli/test/coverage.test.ts 2 failing

🐧🖥 1 failing tests Linux x64 baseline

• test/cli/test/coverage.test.ts 2 failing

🐧🖥 1 failing tests Linux x64

• test/cli/test/coverage.test.ts 2 failing

🪟💻 3 failing tests Windows x64 baseline

• test/cli/install/registry/bun-install-registry.test.ts 2 failing
• test/cli/install/registry/bun-install-windowsshim.test.ts code 1
• test/js/node/child_process/child_process.test.ts 1 failing

🪟💻 3 failing tests Windows x64

• test/cli/install/registry/bun-install-registry.test.ts 1 failing
• test/cli/install/registry/bun-install-windowsshim.test.ts code 1
• test/js/node/child_process/child_process.test.ts 1 failing

View logs

[cuquo]

I've asked for an option in Bun Test to ignore certain files (like Jest or Vitest) in bun's discord before. I've even made jokes about that. Thanks @jakeboone02, instead of complaining like I did, you fixed it :)

[jakeboone02]

I've asked for an option in Bun Test to ignore certain files (like Jest or Vitest) in bun's discord before. I've even made jokes about that. Thanks @jakeboone02, instead of complaining like I did, you fixed it :)

To be fair, I did complain about it before I did anything about it. :)

Now if I could only get those CI tests passing... I'm not sure what's going on. They pass on my machine!