Logs missing in Jest tests

[OliverJAsh]

I am following the recommendation here: https://github.com/pinojs/pino-pretty/tree/db278755318e2f1c565df736bbedd7eb7a2fd73f#usage-with-jest

Reduced test case:

package.json:

{
  "dependencies": {
    "jest": "^29.7.0",
    "pino": "^8.16.2",
    "pino-pretty": "^10.2.3"
  }
}

test.js:

const pino = require('pino')
const pretty = require('pino-pretty')

test('test pino-pretty', () => {
  const logger = pino(pretty({ sync: true }));
  logger.info('Info');
  logger.error('Error');
});

When I run jest test.js I get this output:

 RUNS  ./test.js
 PASS  ./test.jsNFO (81668): Info
  ✓ test pino-pretty (6 ms)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        0.129 s, estimated 1 s
Ran all test suites matching /test.js/i.
✨  Done in 0.37s.

• The info message is partially truncated.
• The error message is missing.

[jsumners]

All I can suggest is that if you need to verify the final NDJSON of individual logs, you should supply a stream that collects the logs and then inspect that collection. See pinojs/pino#1274 (comment).

[mcollina]

I think we have a bug in our docs, I don't think Jest would ever render things correctly.

[FiveOFive]

I think we have a bug in our docs, I don't think Jest would ever render things correctly.

Is that confirmed that Jest won't ever render correctly? I'm also trying to follow those docs but it seems like even with sync: true the log entries are still showing up after tests

[Ugikie]

Confirming this because I'm also using sync: true and jest is still complaining about open handles