/**
  * testExecuteByPath
  *
  * @return  void
  */
 public function testExecuteByPath()
 {
     $this->instance->addCommand(new FooCommand());
     $code = $this->instance->executeByPath('foo aaa bbb', array(), $this->instance->io);
     $output = $this->instance->io->getTestOutput();
     $this->assertEquals(99, $code, 'return code not matched.');
     $this->assertEquals('Bbb Command', $output, 'Output not matched.');
 }