Add Windows CI

[altendky]

Draft for:

• Self review and tidying
• Presumably various issues to address
• Check the Python version used in envs, seems to be 3.10, probably due to versionless py call in Install.ps1.
• Revisit --numprocesses 0 in case xdist is usable on Windows.
• Windows server test failures.
  • Assert in _drain_helper when sending websocket message aio-libs/aiohttp#2934
• Break out PRs:
  • Use --module pytest #10940
  • generate file lists for workflows instead of wildcard patterns #11117
• Maybe get timelord going...

Items to note.

The build workflow script currently sets -n 0 for all windows tests and ignores the config Parallel setting. Windows tests do work locally quite well with multiple subprocesses, however, the GH runners stumble with 4 processes in some tests. Subsequent PRs can explore expanding the config to have a dict with per OS settings.

The IPv6 test is skipped (also skipped on macOS).

[lgtm-com]

This pull request introduces 1 alert when merging 7e823e0 into 60c1867 - view on LGTM.com

new alerts:

• 1 for Unused import

[lgtm-com]

This pull request introduces 1 alert when merging 317e632 into 60c1867 - view on LGTM.com

new alerts:

• 1 for Unused import

[lgtm-com]

This pull request introduces 1 alert when merging 2fb0996 into 60c1867 - view on LGTM.com

new alerts:

• 1 for Unused import

[emlowe]

I approve

[xdustinface]

Looks good, two nits to maybe address, or not :)

[lgtm-com]

This pull request introduces 1 alert when merging fe6825a into 9f50bb3 - view on LGTM.com

new alerts:

• 1 for Unused import

[xdustinface]

The LGTM alert indeed was introduced here because you removed the usage of Path in tests/pools/test_pool_config.py and it seems like i made the Windows CI unhappy again with some path related issues via #11625, sorry :) Seems like its related to the path string matching in with pytest.raises(ValueError, match=f"Path doesn't exist: {test_path}")?

[lgtm-com]

This pull request introduces 1 alert when merging adcbd02 into 5844c6c - view on LGTM.com

new alerts:

• 1 for Unused import

[wjblanke]

aok