[BUG] Playwright breaks in case of current directory case mismatch

[qwertie]

Context:

• Playwright Version: 1.24.2
• Browser: All

## System:
 - OS: Windows 10 10.0.19044
 - Memory: 2.98 GB / 15.93 GB
## Binaries:
 - Node: 16.14.0 - C:\Program Files\nodejs\node.EXE
 - Yarn: 1.22.10 - ~\AppData\Roaming\npm\yarn.CMD
 - npm: 8.3.1 - C:\Program Files\nodejs\npm.CMD
## Languages:
 - Bash: 4.4.20 - C:\Windows\system32\bash.EXE

Describe the bug

If the current directory doesn't have "correct" uppercase/lowercase letters, playwright won't run any tests and gives a confusing error message because it ignores playwright.config.ts and treats the tests themselves as configuration file(s). For example, it might say "Playwright Test did not expect test.beforeEach() to be called here".

Code Snippet

Powershell transcript using on the example shipped provided with playwright:

PS C:\Dev\Temp\playwright-test> npm init playwright@latest
...
PS C:\Dev\Temp\playwright-test> npx playwright test

Running 3 tests using 3 workers

  3 passed (4s)

To open last HTML report run:

  npx playwright show-report

PS C:\Dev\Temp\playwright-test> cd /dev/temp/playwright-test
PS C:\dev\temp\playwright-test> npx playwright test

Running 0 test using 0 worker


Error: ui-tests\example.spec.ts:5:16: Playwright Test did not expect test() to be called here.
Most common reasons include:
- You are calling test() in a configuration file.
- You are calling test() in a file that is imported by the configuration file.
- You have two different versions of @playwright/test. This usually happens
  when one of the dependencies in your package.json depends on @playwright/test.
...

The bug was originally described in #13092.

[rwoll]

Thanks for the report. The error message looks to be particularly confusing in this case. We will review!

[rwoll]

Discussed and looks like:

PS C:\Dev\Temp\playwright-test> npm init playwright@latest
PS C:\Dev\Temp\playwright-test> npx playwright test

and

PS C:\Dev\Temp\playwright-test> cd /dev/temp/playwright-test
PS C:\dev\temp\playwright-test> npx playwright test

should behave similarly. Since they are not, this likely means there is a bug in our file resolution logic. However, since there is a workaround for now, marking as a future release milestone. Thanks!

[mxschmitt]

Folding into #9193.

[pavelfeldman]

Folding into #9193