1 files changed, 21 insertions, 0 deletions
diff --git a/layout/reftests/css-invalid/form/form-add-invalid-element-dynamic.html b/layout/reftests/css-invalid/form/form-add-invalid-element-dynamic.html
new file mode 100644
index 0000000000..29bb4ad309
--- /dev/null
+++ b/layout/reftests/css-invalid/form/form-add-invalid-element-dynamic.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<!-- form with no elements and invalid element is added dynamically -->
+<html>
+  <head>
+    <style>
+      form:invalid { display:none }
+    </style>
+    <script>
+      function onLoadHandler()
+      {
+        document.forms[0].appendChild(document.getElementById('i'));
+        document.documentElement.className='';
+      }
+    </script>
+  </head>
+  <body onload='onLoadHandler();'>
+    <input id='i' required>
+    <form>
+    </form>
+  </body>
+</html>