1--TEST--
2"if" creates a condition
3--TEMPLATE--
4{% if a is defined %}
5  {{ a }}
6{% elseif b is defined %}
7  {{ b }}
8{% else %}
9  NOTHING
10{% endif %}
11--DATA--
12return ['a' => 'a']
13--EXPECT--
14  a
15--DATA--
16return ['b' => 'b']
17--EXPECT--
18  b
19--DATA--
20return []
21--EXPECT--
22  NOTHING
23