Remove flex-align-baseline-table-002.html and grid-align-baseline-table-002.html

[dholbert]

Test List

https://wpt.fyi/results/css/css-flexbox/alignment/flex-align-baseline-table-002.html https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-002.html

(These are specifically the tests that have a checkLayout-tested flexbox/grid in the top-left corner, with a table with multiple captions and with writing-mode:vertical-rl (right-to-left block-axis flow). Under this setup: if the browser fails to render the table's block-end <caption>, then all of other content shifts leftwards, and the x-positions will be different from what the test expects.)

Rationale

Rationale: These two tests indirectly require that HTML <table> can render multiple captions, which isn't really relevant to grid and flexbox interoperability.

More details: Firefox has a long-standing bug where we only ever render the first caption and ignore any others.Hopefully we'll fix that quirk in our table code eventually, but that's not really a fix that we want to commit to as part of achieving interop on flexbox and grid in 2023.

So: I propose we simply remove these two tests from the interop-2023 test set. Note that we'll still have interop-2023 test-coverage for nearly the identical setup with two other writing-modes (horizontal-tb and vertical-lr) in the adjacent -001 and -003 tests, i.e. these ones would remain: https://wpt.fyi/results/css/css-flexbox/alignment/flex-align-baseline-table-001.html https://wpt.fyi/results/css/css-flexbox/alignment/flex-align-baseline-table-003.html https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-001.html https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-003.html Those remaining ones are fine from the perspective of this issue -- for them, it's no trouble if the second caption doesn't render, since the second caption's placement is on the "far" side of the content whose offsets we're checking. It's only the vertical-rl (right-to-left) ones where the caption's presence/absence influences the x-offsets of its neighboring content.

[dholbert]

Note that we'll still have interop-2023 test-coverage for nearly the identical setup with two other writing-modes (horizontal-tb and vertical-lr) in the adjacent -001 and -003 tests, i.e. these ones would remain: https://wpt.fyi/results/css/css-flexbox/alignment/flex-align-baseline-table-001.html https://wpt.fyi/results/css/css-flexbox/alignment/flex-align-baseline-table-003.html https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-001.html https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-003.html

Side note: the -001 and -003 grid tests that I linked here do currently have some test failures in Firefox, due to a known grid baseline bug, which we intend to fix. Those failures are unrelated to this proposal.

[dholbert]

@progers / @nt1m does this proposal sound OK to you?

[progers]

@bfgeek , can you please review this proposal for Chromium?

[nt1m]

Seems reasonable.

[progers]

@bfgeek , ping?

[davidsgrogan]

Removing the -002 tests because the second caption messes up data-offset-x in vertical-rl is fine.

[dholbert]

Thanks! I'll post a PR to do that tomorrow.

[nt1m]

@dholbert Just going through old proposals, were you planning to post a PR for this one?

[dholbert]

Yup, been stuck on my to-do list. I'll do that now.