diff -r 000000000000 -r 6474c204b198 image/test/mochitest/bug490949.sjs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/image/test/mochitest/bug490949.sjs	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+function handleRequest(request, response)
+{
+  var file = Components.classes["@mozilla.org/file/directory_service;1"]
+             .getService(Components.interfaces.nsIProperties)
+             .get("CurWorkD", Components.interfaces.nsIFile);
+
+  file.append("tests");
+  file.append("image");
+  file.append("test");
+  file.append("mochitest");
+
+  var redirectstate = "/image/test/mochitest/bug490949.sjs";
+  if (getState(redirectstate) == "") {
+    file.append('blue.png');
+    setState(redirectstate, "red");
+  } else {
+    file.append('red.png');
+    setState(redirectstate, "");
+  }
+  response.setHeader("Cache-Control", "no-cache", false);
+
+  var fileStream = Components.classes['@mozilla.org/network/file-input-stream;1']
+                   .createInstance(Components.interfaces.nsIFileInputStream);
+  fileStream.init(file, 1, 0, false);
+  var binaryStream = Components.classes['@mozilla.org/binaryinputstream;1']
+                     .createInstance(Components.interfaces.nsIBinaryInputStream);
+  binaryStream.setInputStream(fileStream);
+
+  response.bodyOutputStream.writeFrom(binaryStream, binaryStream.available());
+
+  binaryStream.close();
+  fileStream.close();
+}