1 files changed, 41 insertions, 0 deletions
diff --git a/layout/reftests/details-summary/overflow-hidden-open-details.html b/layout/reftests/details-summary/overflow-hidden-open-details.html
new file mode 100644
index 0000000000..979b871a1a
--- /dev/null
+++ b/layout/reftests/details-summary/overflow-hidden-open-details.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<!-- Any copyright is dedicated to the Public Domain.
+   - http://creativecommons.org/publicdomain/zero/1.0/ -->
+
+<html>
+  <style>
+  details {
+    background-color: orange;
+    overflow: hidden;
+    width: 300px;
+    height: 200px;
+  }
+  summary {
+    /* Hide the triangle for comparing with div in reftest. */
+    list-style-type: none;
+    background-color: green;
+    overflow: hidden;
+    width: 200px;
+    height: 100px;
+  }
+  </style>
+  <body>
+    <details open>
+      <summary>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
+        eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad
+        minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip
+        ex ea commodo consequat. Duis aute irure dolor in reprehenderit in
+        voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur
+        sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt
+        mollit anim id est laborum.
+      </summary>
+      Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+      tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
+      veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
+      commodo consequat. Duis aute irure dolor in reprehenderit in voluptate
+      velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
+      cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id
+      est laborum.
+    </details>
+  </body>
+</html>