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(* Use context-binary for testing. *)
module Context = Tezos_context_memory.Context_binary
include Tree_encoding

type Lazy_containers.Lazy_map.tree += Tree of Context.tree

module Tree = struct
  type t = Context.t

  type tree = Context.tree

  type key = Context.key

  type value = Context.value

  include Context.Tree

  let select = function
    | Tree t -> t
    | _ -> raise Tree_encoding.Incorrect_tree_type

  let wrap t = Tree t
end

module Tree_encoding_runner = Tree_encoding.Runner.Make (Tree)

let empty_tree () =
  let open Lwt_syntax in
  let* index = Context.init "/tmp" in
  let empty_store = Context.empty index in
  return @@ Context.Tree.empty empty_store

let test_encode_decode enc value f =
  let open Lwt_result_syntax in
  let*! empty_tree = empty_tree () in
  let*! tree = Tree_encoding_runner.encode enc value empty_tree in
  let*! value' = Tree_encoding_runner.decode enc tree in
  f value'

let encode_decode enc value = test_encode_decode enc value Lwt.return

let qcheck ?count ?print gen f =
  let open Lwt_result_syntax in
  let test =
    QCheck2.Test.make ?count ?print gen (fun x ->
        Result.is_ok @@ Lwt_main.run (f x))
  in
  let res = QCheck_base_runner.run_tests ~verbose:true [test] in
  if res = 0 then return_unit else failwith "QCheck tests failed"

let make_test ?print encoding gen check () =
  qcheck ?print gen (fun value ->
      let open Lwt_result_syntax in
      let*! value' = encode_decode encoding value in
      let* res = check value value' in
      if res then return_unit else fail ())