public function testGetFormConfigErasesReferences()
{
$builder = new FormBuilder('name', null, $this->dispatcher, $this->factory);
$builder->setParent(new FormBuilder('parent', null, $this->dispatcher, $this->factory));
$builder->add(new FormBuilder('child', null, $this->dispatcher, $this->factory));
$config = $builder->getFormConfig();
$reflClass = new \ReflectionClass($config);
$factory = $reflClass->getProperty('factory');
$parent = $reflClass->getProperty('parent');
$children = $reflClass->getProperty('children');
$unresolvedChildren = $reflClass->getProperty('unresolvedChildren');
$factory->setAccessible(true);
$parent->setAccessible(true);
$children->setAccessible(true);
$unresolvedChildren->setAccessible(true);
$this->assertNull($factory->getValue($config));
$this->assertNull($parent->getValue($config));
$this->assertEmpty($children->getValue($config));
$this->assertEmpty($unresolvedChildren->getValue($config));
}
