1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-shadow-parts/part-after-combinator-invalidation.html b/testing/web-platform/tests/css/css-shadow-parts/part-after-combinator-invalidation.html
new file mode 100644
index 0000000000..76beabe885
--- /dev/null
+++ b/testing/web-platform/tests/css/css-shadow-parts/part-after-combinator-invalidation.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-shadow-parts">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1891296">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="match" href="part-after-combinator-invalidation-ref.html">
+<style>
+.inactive > ::part(content) {
+  color: red;
+}
+</style>
+<div class="inactive">
+  <div id="host">
+    <template shadowrootmode="open">
+      <div part="content">What color am I?</div>
+    </template>
+  </div>
+</div>
+<script>
+onload = () => {
+  host.getBoundingClientRect();
+  host.parentNode.className = "";
+  host.getBoundingClientRect();
+};
+</script>