Make bogus .WHICH test less bogus

Author: lizmat

integration/advent2013-day07.t

@@ -12,4 +12,4 @@ is set( <a b c d> ) ⊆ set( <a b c> ), False, 'a b c d ⊆ a b c';
 is <a b c> ⊆ <a b d>, False,                 'a b c   ⊆ a b d';
 is <a b c> === <a b c>, False, 'a b c === a b c';
 is <a b c> eqv <a b c>, True, 'a b c eqv a b c';
-is set(<a b c>).WHICH, 'Set|Str|a Str|b Str|c', 'is .WHICH what we expect';
+is set(<a b c>).WHICH, set(<c b a>).WHICH, 'make sure .WHICH is consistent';