51 lines
1.6 KiB
OCaml
51 lines
1.6 KiB
OCaml
open TypeInference
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let tests_typeof =
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let x = Identifier.fresh () in
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let y = Identifier.fresh () in
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[ (* Int Const *)
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"0", Term.IntConst 0, Some Type.Int
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; (* Correct function *)
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( "fun x -> fun y -> x + y"
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, Term.(Fun (x, Fun (y, Binop (Var x, Plus, Var y))))
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, Some Type.(Arrow (Int, Arrow (Int, Int))) )
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; (* Not typed variable *)
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"x", Var "x", None
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; (* Operation *)
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"1 + 2", Binop (IntConst 1, Plus, IntConst 2), Some Int
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; (* Pair *)
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"(1, 2)", Pair (IntConst 1, IntConst 2), Some (Product (Int, Int))
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; (* Projection with first *)
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"fst (1, 2)", Proj (First, Pair (IntConst 1, IntConst 2)), Some Int
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; (* Projection with second *)
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"snd (1, 2)", Proj (Second, Pair (IntConst 1, IntConst 2)), Some Int
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; (* Apply (int) into (fun : int -> int) *)
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( "(fun x -> x + 1) 5"
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, App (Fun (x, Binop (Var x, Plus, IntConst 1)), IntConst 5)
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, Some Type.Int )
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; (* Apply product (int * int) into a not compatible function (fun : int -> int) *)
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( "(fun x -> x + 1) (1, 2)"
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, App (Fun (x, Binop (Var x, Plus, IntConst 1)), Pair (IntConst 1, IntConst 2))
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, None )
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]
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;;
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let typeModule = (module Type : Alcotest.TESTABLE with type t = Type.t)
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let check_typeof term_text term expected_type =
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let open Alcotest in
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test_case term_text `Quick (fun () ->
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check (option typeModule) "Same type" expected_type (Inference.typeof term))
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;;
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let () =
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let open Alcotest in
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run
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"Inference"
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[ ( "typeof"
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, List.map
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(fun (term_text, term, expected_type) ->
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check_typeof term_text term expected_type)
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tests_typeof )
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]
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;;
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