1 files changed, 43 insertions, 0 deletions
diff --git a/layout/generic/test/file_SlowPage.sjs b/layout/generic/test/file_SlowPage.sjs
new file mode 100644
index 0000000000..1860e8cbc9
--- /dev/null
+++ b/layout/generic/test/file_SlowPage.sjs
@@ -0,0 +1,43 @@
+"use strict";
+
+let timer;
+
+const DELAY_MS = 5000;
+
+function handleRequest(request, response) {
+  response.processAsync();
+
+  response.setHeader("Content-Type", "text/html", false);
+
+  // Include paint_listener.js so that we can call waitForAllPaintsFlushed
+  // on the window in which this is opened.
+  response.write(
+    '<script type="text/javascript" src="/tests/SimpleTest/paint_listener.js"></script>'
+  );
+
+  // Allow the opening window to react to loading being complete.
+  response.write('<body onload="window.opener.fullyLoaded()">');
+
+  // Send half of the content.
+  for (let i = 0; i < 100; ++i) {
+    response.write("<p>Some text.</p>");
+  }
+
+  // Allow the opening window to react to being partially loaded.
+  response.write("<script>window.opener.partiallyLoaded();</script>");
+
+  // Wait for 5 seconds, then send the rest of the content.
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.init(
+    () => {
+      for (let i = 0; i < 100; ++i) {
+        response.write("<p>Some text.</p>");
+      }
+      response.write("</body>");
+
+      response.finish();
+    },
+    DELAY_MS,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}