gecko-dev/netwerk/test/unit/test_bug536324_64bit_content_length.js

/* Test to ensure our 64-bit content length implementation works, at least for
   a simple HTTP case */

Cu.import("resource://testing-common/httpd.js");

// This C-L is significantly larger than (U)INT32_MAX, to make sure we do
// 64-bit properly.
const CONTENT_LENGTH = "1152921504606846975";

var httpServer = null;

var listener = {
  onStartRequest: function (req, ctx) {
  },

  onDataAvailable: function (req, ctx, stream, off, count) {
    do_check_eq(req.getResponseHeader("Content-Length"), CONTENT_LENGTH);

    // We're done here, cancel the channel
    req.cancel(NS_BINDING_ABORT);
  },

  onStopRequest: function (req, ctx, stat) {
    httpServer.stop(do_test_finished);
  }
};

function hugeContentLength(metadata, response) {
  var text = "abcdefghijklmnopqrstuvwxyz";
  var bytes_written = 0;

  response.seizePower();

  response.write("HTTP/1.1 200 OK\r\n");
  response.write("Content-Length: " + CONTENT_LENGTH + "\r\n");
  response.write("Connection: close\r\n");
  response.write("\r\n");

  // Write enough data to ensure onDataAvailable gets called
  while (bytes_written < 4096) {
    response.write(text);
    bytes_written += text.length;
  }

  response.finish();
}

function test_hugeContentLength() {
  var ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
  var chan = ios.newChannel("http://localhost:" +
                            httpServer.identity.primaryPort + "/", null, null)
                .QueryInterface(Ci.nsIHttpChannel);
  chan.asyncOpen(listener, null);
}

add_test(test_hugeContentLength);

function run_test() {
  httpServer = new HttpServer();
  httpServer.registerPathHandler("/", hugeContentLength);
  httpServer.start(-1);
  run_next_test();
}