Bun test returns exit code 1 even when coverage and coverageThreshold used together

[silverbucket]

What version of Bun is running?

1.2.2+c1708ea6a

What platform is your computer?

Darwin 23.6.0 arm64 arm

What steps can reproduce the bug?

$ cat bunfig.toml
[test]
coverage = true
coverageThreshold = { functions = 0.85, lines = 0.85 }

$ bun test; echo $?
...
--------------------------------------------------------------------|---------|---------|-------------------
File                                                                | % Funcs | % Lines | Uncovered Line #s
--------------------------------------------------------------------|---------|---------|-------------------
All files                                                           |   87.07 |   90.24 |
...
271 pass
 0 fail
 504 expect() calls
Ran 271 tests across 23 files. [2.41s]
1

What is the expected behavior?

All tests pass, within coverage limits, exit status should be 0.

What do you see instead?

No matter if tests are failing or not, or coverage limits are exceeded or not, the exit status is always 1.

Additional information

You can try this out on my migration branch switch-to-bun:
https://github.com/sockethub/sockethub/tree/switch-to-bun

And view the CI failure here:
https://github.com/sockethub/sockethub/actions/runs/13124596661/job/36618267430?pr=886

[silverbucket]

This seems to be happening when using the coverageThreshold and coverage config options together:

$ cat bunfig.toml
[test]
coverage = true
coverageThreshold = { functions = 0.85, lines = 0.85 }

$ bun test; echo $?
...
 271 pass
 0 fail
 504 expect() calls
Ran 271 tests across 23 files. [2.61s]
1

If I remove the coverageThreshold line, tests pass:

$ cat bunfig.toml
[test]
coverage = true

$ bun test; echo $?
 271 pass
 0 fail
 504 expect() calls
Ran 271 tests across 23 files. [2.39s]
0

If I remove the coverage line, tests pass:

$ cat bunfig.toml
[test]
coverageThreshold = { functions = 0.85, lines = 0.85 }

$ bun test; echo $?
 271 pass
 0 fail
 504 expect() calls
Ran 271 tests across 23 files. [2.48s]
0

The coverage amount reported in the output:

--------------------------------------------------------------------|---------|---------|-------------------
File                                                                | % Funcs | % Lines | Uncovered Line #s
--------------------------------------------------------------------|---------|---------|-------------------
All files                                                           |   87.07 |   90.24 |