gecko-dev/netwerk/test/unit/test_cache2-14b-concurent-readers-complete.js

function run_test()
{
  do_get_profile();

  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
    new OpenCallback(NEW, "x1m", "x1d", function(entry) {
      // nothing to do here, we expect concurent callbacks to get
      // all notified, then the test finishes
    })
  );

  var mc = new MultipleCallbacks(3, finish_cache2_test);

  var order = 0;

  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
    new OpenCallback(NORMAL|COMPLETE|NOTIFYBEFOREREAD, "x1m", "x1d", function(entry, beforeReading) {
      if (beforeReading) {
        ++order;
        Assert.equal(order, 3);
      } else {
        mc.fired();
      }
    })
  );
  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
    new OpenCallback(NORMAL|NOTIFYBEFOREREAD, "x1m", "x1d", function(entry, beforeReading) {
      if (beforeReading) {
        ++order;
        Assert.equal(order, 1);
      } else {
        mc.fired();
      }
    })
  );
  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
    new OpenCallback(NORMAL|NOTIFYBEFOREREAD, "x1m", "x1d", function(entry, beforeReading) {
      if (beforeReading) {
        ++order;
        Assert.equal(order, 2);
      } else {
        mc.fired();
      }
    })
  );

  do_test_pending();
}