--TEST--
"block" function with undefined block
--TEMPLATE--
{% extends "base.twig" %}
{% block foo %}{{ parent() }}{{ block('unknown') }}{{ block('bar') }}{% endblock %}
--TEMPLATE(base.twig)--
{% block foo %}Foo{% endblock %}
{% block bar %}Bar{% endblock %}
--DATA--
return []
--EXPECT--
FooBarBar
