+
+ok($hash = $isis->to_hash({ mfn => $isis->mfn, include_subfields => 1 }), 'to_hash(mfn,include_subfields)');
+diag "to_hash = ",Dumper( $hash ) if ($debug);
+is_deeply( $hash, {
+ "000" => [42],
+ 900 => [
+ { a => "900a", b => "900b", c => "900c", subfields => ["a", 0, "b", 0, "c", 0] },
+ ],
+ 901 => [
+ { a => "901a-1", b => "901b-1", c => "901c-1", subfields => ["a", 0, "b", 0, "c", 0] },
+ { a => "901a-2", b => "901b-2", subfields => ["a", 0, "b", 0] },
+ { a => "901a-3", subfields => ["a", 0] },
+ ],
+ 902 => [
+ { a => ["a1", "a2", "a3", "a4", "a5"], b => ["b1", "b2"], c => "c1",
+ subfields => ["a", 0, "a", 1, "a", 2, "b", 0, "a", 3, "b", 1, "c", 0, "a", 4],
+ },
+ ],
+}, 'hash is_deeply');
+