/**
  * @test
  */
 public function getCollectedOutputAfterTwoOutputCallReturnsOutputsInCallingOrder()
 {
     $output1 = 'Hello world ...';
     $this->subject->output($output1);
     $output2 = ' and hello again.';
     $this->subject->output($output2);
     self::assertSame($output1 . $output2, $this->subject->getCollectedOutput());
 }