expect resolves/rejects hangs

“expect(value).rejects never settles when value is a thenable that starts its work inside an overridden then().”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/bun/issues/5630/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

expect().resolves/rejects hangs past test timeout on pending thenables. expect(...).resolves waits for the promise before it returns; thenables that start work in then() never settle and the run hangs.

Is this your bug?

File my report

Where: bun:test
Versions: 1.4.1-canary.1 to 1.4.3
Platforms: macOS
How bad: Breaks a normal workflow.

Not quite your bug?

setImmediate hops stall inside expect().resolves/.rejects with open I/O3 people

Original reports2, newest first

Oct 17, 2026bun:test: expect(promise).resolves blocks until the promise settles, and the test timeout never fires#45714
Aug 30, 2026bun:test: expect(thenable).rejects hangs when the thenable starts work in its overridden then()#40949

expect resolves/rejects hangs

Is this your bug? What gets counted gets fixed. Pile on.

Is this your bug?

Not quite your bug?

Original reports2, newest first

Do you work on Bun?