public function shouldBehave()
{
$machine = new StateMachine(new Context(new Identifier('yaml-test', 'test-machine')));
$loader = YAML::createFromFile(__DIR__ . '/../../../../assets/yaml/example.yaml');
$count = $loader->load($machine);
$this->assertContains('bdone', $loader->getYAML());
$this->assertContains('YAML', $loader->toString());
$this->assertContains('YAML', $loader . '', '__toString()');
}