86 lines
2.3 KiB
OCaml
86 lines
2.3 KiB
OCaml
(**************************************************************************)
|
|
(* *)
|
|
(* Copyright (c) 2014 - 2017. *)
|
|
(* Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
|
|
(* *)
|
|
(* All rights reserved. No warranty, explicit or implicit, provided. *)
|
|
(* *)
|
|
(**************************************************************************)
|
|
|
|
open Error_monad
|
|
|
|
let rec (--) i j =
|
|
if j < i then []
|
|
else i :: (i+1) -- j
|
|
|
|
type tree =
|
|
| Empty
|
|
| Leaf of int
|
|
| Node of tree * tree
|
|
|
|
let rec list_of_tree = function
|
|
| Empty -> [], 0
|
|
| Leaf x -> [x], 1
|
|
| Node (x, y) ->
|
|
let x, sx = list_of_tree x
|
|
and y, sy = list_of_tree y in
|
|
assert (sx = sy) ;
|
|
x @ y, sx + sy
|
|
|
|
module Merkle = Hash.Generic_Merkle_tree(struct
|
|
type t = tree
|
|
type elt = int
|
|
let empty = Empty
|
|
let leaf i = Leaf i
|
|
let node x y = Node (x, y)
|
|
let encoding =
|
|
(* Fake... *)
|
|
Data_encoding.conv (fun _ -> 0) (fun _ -> Empty) Data_encoding.int31
|
|
end)
|
|
|
|
let rec compare_list xs ys =
|
|
match xs, ys with
|
|
| [], [] -> true
|
|
| [x], y :: ys when x = y -> ys = [] || compare_list xs ys
|
|
| x :: xs, y :: ys when x = y -> compare_list xs ys
|
|
| _, _ -> false
|
|
|
|
let check_size i =
|
|
let l = 0 -- i in
|
|
let l2, _ = list_of_tree (Merkle.compute l) in
|
|
if compare_list l l2 then
|
|
return ()
|
|
else
|
|
failwith "Failed for %d: %a"
|
|
i
|
|
(Format.pp_print_list
|
|
~pp_sep:(fun ppf () -> Format.pp_print_string ppf ";")
|
|
Format.pp_print_int)
|
|
l2
|
|
|
|
let test_compute _ =
|
|
iter_s check_size (0--99)
|
|
|
|
let check_path i =
|
|
let l = 0 -- i in
|
|
let orig = Merkle.compute l in
|
|
iter_s (fun j ->
|
|
let path = Merkle.compute_path l j in
|
|
let found, pos = Merkle.check_path path j in
|
|
if found = orig && j = pos then
|
|
return ()
|
|
else
|
|
failwith "Failed for %d in %d." j i)
|
|
l
|
|
|
|
let test_path _ =
|
|
iter_s check_path (0--128)
|
|
|
|
let tests : (string * (string -> unit tzresult Lwt.t)) list = [
|
|
"compute", test_compute ;
|
|
"path", test_path ;
|
|
]
|
|
|
|
let () =
|
|
Test.run "merkel." tests
|