1951006 - Firefox fails WPT css/css-viewport/zoom/zoom-with-sign-function.html

Status: NEW

(Core :: Audio/Video, defect)

Description

[Daniel Holbert [:dholbert]]

We fail this WPT:

wpt.fyi: https://wpt.fyi/results/css/css-viewport/zoom/zoom-with-sign-function.html
wpt.live: https://wpt.live/css/css-viewport/zoom/zoom-with-sign-function.html

The two subtests that we fail there are:

calc(sign(1em - 1px) * 2) should be used-value-equivalent to 2
calc(sign(1em - 1px) * 2%) should be used-value-equivalent to 2%

This is the same sort of pattern as in bug 1932704 comment 1, but with a different property (zoom here, vs. a numeric piece of a -webkit-gradient over there).

As noted in bug 1932704 comment 1, this is bug 1827404 or related I think. For now this is part of the zoom piece of the interop-2025-webcompat focus area, but we should perhaps request to remove it since it's not actually testing anything specific to zoom, and is instead testing this bit of CSS calc() syntax and just happens to be using the zoom property to test it.

Comment 1

[Daniel Holbert [:dholbert]]

I probably need to file a test-change-proposal similar to https://github.com/web-platform-tests/interop/issues/937 here, since I don't think it makes sense to consider this as being especially important for zoom interoperability.

Comment 2

[Daniel Holbert [:dholbert]]

I submitted https://github.com/web-platform-tests/interop/issues/939 to remove this test from interop, and it was accepted/merged, so we can remove the interop association here.