QA output created by 705
== callback-based state exercising
adding entries
iterating WALK_STOP
3 => 3
iterating WALK_NEXT
3 => 3
2 => 2
1 => 1
0 => 0
iterating WALK_DELETE_STOP
3 => 3
iterating WALK_NEXT
2 => 2
1 => 1
0 => 0
iterating WALK_DELETE_NEXT
2 => 2
1 => 1
0 => 0
iterating WALK_NEXT
== verifying both hash walkers produce same results
callback:
adding entries
3 => 3
2 => 2
1 => 1
0 => 0
chained:
adding entries
3 => 3
2 => 2
1 => 1
0 => 0
== success
