use Test::YAML tests => 4; # subclass of Test::Base filter { yaml => 'load_obj', perl => 'dump_obj', }; run_is yaml => 'perl'; run_is perl => 'yaml'; __DATA__ === A hash --- perl { foo => 'bar'} --- yaml foo: bar === An array --- perl [ 2, 4, 42 ] --- yaml - 2 - 4 - 42