virt2/api/jquery/plugins/jquery_chained-2.x/test/spec/SpecHelper.js

/*
beforeEach(function() {
  this.addMatchers({
    toBePlaying: function(expectedSong) {
      var player = this.actual;
      return player.currentlyPlayingSong === expectedSong &&
             player.isPlaying;
    }
  });
});
*/