/**
* Attempts to load a resource from a collection.
*
* If one of the resources exist, it will be loaded and `true` is returned.
* Otherwise, `false` is returned. An `InvalidArgumentException` exception
* will only be thrown if the resource fails to load because it is invalid.
*
* @param ResourceCollection $collection The collection to load.
*
* @return boolean Returns `true` if loaded, `false` if not.
*
* @throws InvalidArgumentException If the resource is invalid..
*/
public function loadOptional($collection)
{
// @codeCoverageIgnoreStart
if (!$collection instanceof ResourceCollection) {
throw new InvalidArgumentException('The resource "%s" is not an instance of "ResourceCollection".', $this->toString($collection));
}
// @codeCoverageIgnoreEnd
foreach ($collection as $resource) {
try {
parent::load($resource);
return true;
} catch (InvalidArgumentException $exception) {
if (false === strpos($exception->getMessage(), 'does not exist')) {
throw $exception;
// @codeCoverageIgnore
}
}
}
return false;
}
/**
* Verifies that we can load a resource.
*/
public function testLoad()
{
file_put_contents($this->dir . '/test.yml.dist', Yaml::dump(array('parameters' => array('test' => 'value'))));
$this->loader->load(new ResourceSupport('test.yml.dist', 'test.yml'));
self::assertEquals('value', $this->container->getParameter('test'));
}
