text: Tinytest.add('tar-stream', function (test) {
      var isDefined = false;
      try {
          TarStream;
          isDefined = true;
      } catch (e) {
      }
      test.isTrue(isDefined, "TarStream is not defined");
      test.isTrue(Package['davidthornton:tar-stream'].TarStream, "Package.davidthornton:tar-stream.TarStream is not defined");
  });
  