1 files changed, 19 insertions, 0 deletions
diff --git a/layout/generic/test/slow-stylesheet.sjs b/layout/generic/test/slow-stylesheet.sjs
new file mode 100644
index 0000000000..f0c7f94e67
--- /dev/null
+++ b/layout/generic/test/slow-stylesheet.sjs
@@ -0,0 +1,19 @@
+// Make sure our timer stays alive.
+let gTimer;
+
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/css", false);
+  response.setStatusLine("1.1", 200, "OK");
+  response.processAsync();
+
+  gTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  // Wait for 1s before responding; this should usually make sure this load comes in last.
+  gTimer.init(
+    () => {
+      response.write("body { color: lime }");
+      response.finish();
+    },
+    1000,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}