public function testDelegateContainer()
{
$picotainer = new Picotainer(['instance' => function () {
return 'value';
}]);
$container = new Container();
$container->delegate($picotainer);
$container->instance('instance2', $container->get('instance'));
$this->assertSame('value', $container->get('instance2'));
$this->assertTrue($container->hasInDelegate('instance'));
$this->assertFalse($container->hasInDelegate('instance3'));
}