[v6.d REVIEW] Test return data directly

Instead of converting it to another type and stringifying.

Partial origs:
d64d2eb
ff44772

Author: zoffixznet

S32-list/permutations.t

@@ -5,17 +5,18 @@ plan 9;
 
 # L<S32::Containers/List/=item permutations>
 
-is (1, 2, 3).permutations.list.perl, ((1, 2, 3), (1, 3, 2), (2, 1, 3), (2, 3, 1), (3, 1, 2), (3, 2, 1)).perl, "permutations method";
-is permutations(3).list.perl, ((0, 1, 2), (0, 2, 1), (1, 0, 2), (1, 2, 0), (2, 0, 1), (2, 1, 0)).perl, "permutations function";
+is-deeply (1, 2, 3).permutations,
+    ((1, 2, 3), (1, 3, 2), (2, 1, 3), (2, 3, 1), (3, 1, 2), (3, 2, 1)).Seq, 'permutations method';
+is-deeply permutations(3),
+    ((0, 1, 2), (0, 2, 1), (1, 0, 2), (1, 2, 0), (2, 0, 1), (2, 1, 0)).Seq, 'permutations function';
 
-is (1,).permutations.list.perl, ((1,),).perl, "permutations method on single element list";
-is permutations(1).list.perl, ((0,),).perl, "permutations function with 1 for its argument";
+is-deeply (1,).permutations, ((1,),).Seq, 'method on single-element list';
+is-deeply ()  .permutations, ((),)  .Seq, 'method on empty list';
+is-deeply permutations(1),   ((0,),).Seq, 'sub with 1 for its argument';
+is-deeply permutations(0),   ((),)  .Seq, 'sub with 0 for its argument';
 
-is ().permutations.list.perl, ((),).perl, "permutations method on empty list";
-is permutations(0).list.perl, ((),).perl, "permutations function with 0 for its argument";
-
-is +().permutations, 1, "there is 1 permutation of empty list";
-is +permutations(0), 1, "there is 1 permutation with 0 values";
+is-deeply +().permutations, 1, 'there is 1 .permutation of empty list';
+is-deeply +permutations(0), 1, 'there is 1 &permutation with 0 values';
 
 # RT #127777
-is permutations(-1).list.perl, ((),).perl, "sub permutations with negative argument";
+is-deeply permutations(-1), ((),).Seq, '&permutations with negative argument';