gistfile1.txt

casper.test.emberDidRender = function(cbk){
  casper.evaluate(function(){
    return window.Ember.run.end();
  });
  cbk.call(casper)
};

// use
casper.then(I_click_edit);

function I_click_edit(){
  this.test.emberDidRender(function(){
    this.clickLabel('Edit');
  });
};