60 lines
1.3 KiB
OCaml
60 lines
1.3 KiB
OCaml
(* Unit testing of module [PolyMap] *)
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let () = Printf.printf "Testing polymorphic maps... "
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let cmp = Pervasives.compare
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let in_assoc =
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["c", 2;
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"g", -1;
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"a", 0;
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"e", 4;
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"f", 5;
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"g", -1;
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"b", -1;
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"b", 1;
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"d", 3;
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"j", 9;
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"g", 6;
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"h", 7;
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"i", 8]
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(* Insertion sort which keeps the last duplicate of any item.
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WARNING: Quadratic cost! *)
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let rec ins cmp x = function
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[] -> [x]
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| y::s as l ->
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let diff = cmp x y in
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if diff = 0 then l else if diff > 0 then y :: ins cmp x s else x::l
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let rec isort cmp = function
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[] -> []
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| x::s -> ins cmp x (isort cmp s)
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let sorted_in_assoc = isort (fun (k1,_) (k2,_) -> cmp k1 k2) in_assoc
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(*
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let () = Printf.printf "\nInput map:\n"
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let () = List.iter (fun (k,v) -> Printf.printf "%s -> %d\n" k v) in_assoc
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let () = Printf.printf "\nSorted map:\n"
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let () = List.iter (fun (k,v) -> Printf.printf "%s -> %d\n" k v) sorted_in_assoc
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*)
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let empty_map = PolyMap.create ~cmp
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let out_map =
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List.fold_left (fun m (k,v) -> PolyMap.add k v m) empty_map in_assoc
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let out_bindings = PolyMap.bindings out_map
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(*
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let () = Printf.printf "\nOutput map:\n"
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let () = List.iter (fun (k,v) -> Printf.printf "%s -> %d\n" k v) out_bindings
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*)
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let () =
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if sorted_in_assoc = out_bindings then
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Printf.printf "PASS.\n%!"
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else Printf.printf "FAILED.\n%!"
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