[BUG] generated testId differs on windows and linux

[Alexander-Taran]

System info

• Playwright Version: [v1.40]
• Operating System: [All, Windows 11, Ubuntu 20]
• Browser: [All]
• Other info: I did implement my custom reporter and noticed that I can't match tests between runs on testId if tests are run on different platforms (linux | windows)

My guess is that code in this lines behaves differently somehow

Source code

https://github.com/microsoft/playwright/blob/bbe26dbdbb172fcb05750ff5d52c0b6f2a8b311d/packages/playwright/src/common/suiteUtils.ts#L43C12-L55

Steps I believe that running any suite on different platforms will reproduce the inconsistency.

• Generate report on linux
• Generate report on windows
• Compare the two.

Expected

Testid fields should be the same.

Actual

Testid fields for the same test are different.

[Alexander-Taran]

@dgozman @mxschmitt Thanks, guys!!