public function testCheckRegisteredAsInternal()
 {
     $pc = new \Prereq\PrereqChecker();
     $check = $pc->getCheck('php_version');
     $this->assertInstanceOf('Prereq\\PhpVersionPrereqCheck', $check);
 }
 public function testCheckRegisteredAsInternal()
 {
     $pc = new \Prereq\PrereqChecker();
     $check = $pc->getCheck('dir_writable');
     $this->assertInstanceOf('Prereq\\DirWritablePrereqCheck', $check);
 }