1--TEST--
2"batch" filter preserves array keys
3--TEMPLATE--
4{{ {'foo': 'bar', 'key': 'value'}|batch(4)|first|keys|join(',') }}
5{{ {'foo': 'bar', 'key': 'value'}|batch(4, 'fill')|first|keys|join(',') }}
6--DATA--
7return []
8--EXPECT--
9foo,key
10foo,key,0,1
11