public function testOutputReadFileError()
 {
     $path = __FILE__;
     $this->output->expects($this->once())->method('getHttpResponseCode')->will($this->returnValue(Http::STATUS_OK));
     $this->output->expects($this->once())->method('setReadfile')->will($this->returnValue(false));
     $this->output->expects($this->once())->method('setHttpResponseCode')->with($this->equalTo(Http::STATUS_BAD_REQUEST));
     $response = new StreamResponse($path);
     $response->callback($this->output);
 }