Test that lh units are calculated before select fixup

Per resolution in [1], lh units should be computed before any fixups to line-height for form controls. Add a test for <select> elements. [1] w3c/csswg-drafts#3257 (comment) Bug: 937104 Change-Id: Id9987dc1d9a2c7b7a6e006cbfdd431e07379196b Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3955838 Commit-Queue: Rune Lillesveen <futhark@chromium.org> Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org> Cr-Commit-Position: refs/heads/main@{#1059314}
web-platform-tests · Oct 14, 2022 · 1f54f75 · 1f54f75
1 parent 65a367d
commit 1f54f75
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/css/css-values/lh-unit-004.html b/css/css-values/lh-unit-004.html
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+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Values and Units Test: lh not affected by &lt;select&gt; fixup</title>
+<link rel="help" href="https://drafts.csswg.org/css-values-4/#font-relative-lengths">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  select {
+    line-height: 100px;
+    width: 5lh;
+  }
+</style>
+<select id="lh"></select>
+<script>
+  test(() => {
+    assert_equals(getComputedStyle(lh).width, "500px");
+  }, "lh must be relative to computed line-height before select element fixup");
+</script>