public function testClosureCall()
{
$closure = function () {
return 'closure:hello';
};
$callback = new Callback($closure);
$this->assertEquals($callback->getType(), Callback::TYPE_CLOSURE);
$this->assertEquals('closure:hello', $callback->call());
// both allowed
$callback = new Callback(NULL, $closure);
$this->assertEquals($callback->getType(), Callback::TYPE_CLOSURE);
$this->assertEquals('closure:hello', $callback->call());
}
