1 files changed, 12 insertions, 0 deletions
diff --git a/layout/reftests/bugs/386310-script.js b/layout/reftests/bugs/386310-script.js
new file mode 100644
index 0000000000..960fe6ab5a
--- /dev/null
+++ b/layout/reftests/bugs/386310-script.js
@@ -0,0 +1,12 @@
+function wrapNode() {
+  var elm = document.getElementById("test");
+  var span = document.createElement("span");
+  span.setAttribute("style", "background: yellow");
+  var range = document.createRange();
+  var start = "first second third [".length;
+  range.setStart(elm.lastChild, start);
+  range.setEnd(elm.lastChild, start + "fourth".length);
+  range.surroundContents(span);
+}
+
+window.addEventListener("load", wrapNode);