performServerTest(router) { expectation in
            self.performRequest("get", path: "/jsonp_encoded?callback=testfn", callback: { response in
                XCTAssertNotNil(response, "ERROR!!! ClientRequest response object was nil")
                XCTAssertEqual(response?.statusCode, HTTPStatusCode.OK, "HTTP Status code was \(String(describing: response?.statusCode))")
                do {