public function testToString()
{
ob_start();
$parser = new Parser($this->paths);
echo $parser;
$out = ob_get_clean();
$this->assertTrue(strpos($out, 'OPTIONS:') !== false);
$this->assertTrue(strpos($out, 'ARGUMENTS:') !== false);
$this->assertTrue(strpos($out, 'COMMANDS:') !== false);
}