supports() public method

public supports ( $resource, $type = null )
 public function testSupports()
 {
     $loader = new XmlFileLoader(new ContainerBuilder(), new FileLocator());
     $this->assertTrue($loader->supports('foo.xml'), '->supports() returns true if the resource is loadable');
     $this->assertFalse($loader->supports('foo.foo'), '->supports() returns true if the resource is loadable');
 }