Universal ::scroll-button() should not apply to every pseudo element

lilles · chromium-wpt-export-bot · commit ada75ff18c89 · 2025-01-27T09:52:57.000-08:00
Missing check for IsScrollButtonPseudoElement() in SelectorChecker. Bug: 392541996 Change-Id: I32f8c370b1b9eef4d506e2853cc21af1b8020b49 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6198791 Commit-Queue: Daniil Sakhapov <sakhapov@chromium.org> Reviewed-by: Robert Flack <flackr@chromium.org> Reviewed-by: Daniil Sakhapov <sakhapov@chromium.org> Auto-Submit: Rune Lillesveen <futhark@chromium.org> Cr-Commit-Position: refs/heads/main@{#1411671}
diff --git a/css/css-overflow/scroll-button-universal-before.html b/css/css-overflow/scroll-button-universal-before.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Overflow Test: ::scroll-button(*) style should not apply to ::before</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  #target::before {
+    color: green;
+    content: " ";
+  }
+  #target::scroll-button(*) {
+    color: red;
+  }
+</style>
+<div id="target"></div>
+<script>
+  test(() => {
+    assert_equals(getComputedStyle(target, "::before").color, "rgb(0, 128, 0)");
+  }, "::before should not pick up style from ::scroll-button(*) rule");
+</script>
