[wdspec] browsing_context/print: add IDs to background tests and format

[thiagowfx]

See commit history for explanations.

Chrome Print to PDF does not support tiny dimensions (c.f.
https://crbug.com/1430696).

The background test should not exercise dimensions testing. Instead, it
should be concerned merely with the background property.

With this change:

• background.py passes in chrome bidi
• newly added page.py tests (moved from background.py) still do not pass in chrome bidi

[community-tc-integration]

Uh oh! Looks like an error! Details

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• time: 2023-06-07T18:32:24.353Z

[thiagowfx]

Re-triggering run (close + reopen)

[community-tc-integration]

Uh oh! Looks like an error! Details

Client ID static/taskcluster/github does not have sufficient scopes and is missing the following scopes:

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---

• method: rerunTask
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• time: 2023-06-09T12:14:37.724Z

Done

[thiagowfx]

I'd appreciate pointers on why https://github.com/web-platform-tests/wpt/pull/40421/checks?check_run_id=14132619502 is failing. It's not really obvious from the log, and it seems to be a false positive.

I don't know why but this 'Community-TC' thing is often slow and seemingly flaky. I wonder if it's related to #31499

[thiagowfx]

Moved the pre-factoring changes to a dedicated PR: #40470

The intent is to try to circumvent the failures in community-tc (c.f. #38450 (comment)) as they are unrelated

[thiagowfx]

Indeed...if we do not touch files in /support, then everything (in Chrome) works great.

[thiagowfx]

Now the chrome tests are not failing however there's something wrong with the firefox ones: https://community-tc.services.mozilla.com/tasks/HciShpGSQdmcAAw3BsfAlg/runs/0/logs/public/logs/live.log

@whimboo What would be the issue?

[whimboo]

When you check the lines earlier in this log you can see that the test webdriver/tests/bidi/browsing_context/print/background.py is now failing with Firefox. I can also reproduce that locally when running ./wpt run firefox webdriver/tests/bidi/browsing_context/print/background.py --binary <path-to-firefox> --no-headless

[thiagowfx]

@whimboo Thanks for the CLI, I can also reproduce it locally!

[thiagowfx]

We ended up fixing this in our end: GoogleChromeLabs/chromium-bidi#841

So it turns out this PR is not necessary anymore. I'll just convert it to do some formatting changes and add IDs to the tests.

[community-tc-integration]

Uh oh! Looks like an error! Details

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---

• method: rerunTask
• errorCode: InsufficientScopes
• statusCode: 403
• time: 2023-06-13T17:11:21.243Z

[community-tc-integration]

Uh oh! Looks like an error! Details

Client ID static/taskcluster/github does not have sufficient scopes and is missing the following scopes:

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---

• method: rerunTask
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• time: 2023-06-13T17:11:21.561Z

[thiagowfx]

@whimboo this PR is very simple at this point, but wpt-firefox-nightly-stability fails.

Logs: https://community-tc.services.mozilla.com/tasks/Oqrpk1OLS_md0LKawxwEug/runs/0/logs/public/logs/live.log

All background.py and page.py tests are passing. Could you help me out to figure out the error this time?

[whimboo]

Not sure what the flakiness is here but I mentioned it to @jgraham. As it looks like quite a few of other PRs are affected as well. I don't think that this is related to those changes given that wpt.fyi results and the nightly results are looking fine.

@jgraham can you please admin merge?