open Core.Std open Model type edit_expected_function = value: parameter -> string type edit_parameters_function = (string * string) list -> (string * string) list type subst = Subst of string [@@deriving eq, show] let subst_to_string (Subst s) = s let map_subst (s: subst) ~(f: string -> string): subst = Subst (subst_to_string s |> f) let replace_key (key: string) (value: string) (target: string): string = let replace = String.substr_replace_all ~with_:value in replace ~pattern:("$" ^ key) target |> replace ~pattern:("$(" ^ key ^ ")") let rec replace_keys (f: edit_expected_function) (ed: edit_parameters_function) (s: string) (suite_name: string) (c: case): subst = let s = replace_key "description" c.description s in let expected = f ~value:c.expected in let s = replace_key "expected" expected s in let s = replace_key "suite-name" suite_name s in let parameter_strings = ed @@ List.map ~f:(fun (k,p) -> (k,parameter_to_string p)) c.parameters in List.fold parameter_strings ~init:(Subst s) ~f:(fun (Subst s) (k,v) -> Subst (replace_key k v s)) let fill_in_template (f: edit_expected_function) (ed: edit_parameters_function) test_template suite_name cases = List.map cases ~f:(replace_keys f ed test_template suite_name)