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Tests: Add test for var() fallback values with trailing whitespace

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This test shows that var() fallback values with trailing whitespace
(e.g. `var(--foo, flex )`) fail to parse correctly for the display
property, falling back to initial values instead.
This commit is contained in:
Andreas Kling
2026-03-21 13:02:20 -05:00
committed by Andreas Kling
parent bc3bd28378
commit 86b3c37222
Notes: github-actions[bot] 2026-03-22 02:45:12 +00:00 
Author: https://github.com/awesomekling
Commit: https://github.com/LadybirdBrowser/ladybird/commit/86b3c372224
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/8562
2 changed files with 49 additions and 0 deletions
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41
Tests/LibWeb/Text/input/css/var-fallback-trailing-whitespace.html Normal file
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<!doctype html>
<style>
/* display property with various whitespace in fallback */
#display-no-space { display: var(--undefined, flex); }
#display-trailing-space { display: var(--undefined, flex ); }
#display-extra-spaces { display: var(--undefined, flex ); }
/* multi-keyword display with trailing whitespace */
#display-multi { display: var(--undefined, inline flex ); }
/* other properties with trailing whitespace in fallback */
#color { color: var(--undefined, red ); }
#position { position: var(--undefined, absolute ); }
#visibility { visibility: var(--undefined, hidden ); }
/* nested var with trailing whitespace */
#nested-var { display: var(--undefined, var(--also-undefined, grid )); }
</style>
<div id="display-no-space"></div>
<div id="display-trailing-space"></div>
<div id="display-extra-spaces"></div>
<div id="display-multi"></div>
<div id="color"></div>
<div id="position"></div>
<div id="visibility"></div>
<div id="nested-var"></div>
<script src="../include.js"></script>
<script>
test(() => {
const cs = (id) => getComputedStyle(document.getElementById(id));
println(`display no-space: ${cs("display-no-space").display}`);
println(`display trailing-space: ${cs("display-trailing-space").display}`);
println(`display extra-spaces: ${cs("display-extra-spaces").display}`);
println(`display multi: ${cs("display-multi").display}`);
println(`color: ${cs("color").color}`);
println(`position: ${cs("position").position}`);
println(`visibility: ${cs("visibility").visibility}`);
println(`nested-var: ${cs("nested-var").display}`);
});
</script>