69 lines
1.6 KiB
OCaml
69 lines
1.6 KiB
OCaml
open! Import
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open Ref
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let%test_unit "[set_temporarily] without raise" =
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let r = ref 0 in
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[%test_result: int] ~expect:1 (set_temporarily r 1 ~f:(fun () -> !r));
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[%test_result: int] ~expect:0 !r
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;;
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let%expect_test "[set_temporarily] with raise" =
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let r = ref 0 in
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require_does_raise [%here] (fun () ->
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Nothing.unreachable_code (set_temporarily r 1 ~f:(fun () -> failwith "")));
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[%expect {| (Failure "") |}];
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require_equal [%here] (module Int) !r 0
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;;
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let%test_unit "[set_temporarily] where [f] sets the ref" =
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let r = ref 0 in
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set_temporarily r 1 ~f:(fun () -> r := 2);
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[%test_result: int] ~expect:0 !r
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;;
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let%expect_test "[sets_temporarily] without raise" =
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let r1 = ref 1 in
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let r2 = ref 2 in
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let test and_values =
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let i1 = !r1 in
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let i2 = !r2 in
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sets_temporarily and_values ~f:(fun () ->
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print_s [%message (r1 : int ref) (r2 : int ref)]);
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require_equal
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[%here]
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(module struct
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type t = int * int [@@deriving equal, sexp_of]
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end)
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(!r1, !r2)
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(i1, i2)
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in
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test [];
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[%expect {|
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((r1 1)
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(r2 2))
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|}];
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test [ T (r1, 13) ];
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[%expect {|
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((r1 13)
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(r2 2))
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|}];
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test [ T (r1, 13); T (r1, 17) ];
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[%expect {|
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((r1 17)
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(r2 2))
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|}];
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test [ T (r1, 13); T (r2, 17) ];
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[%expect {|
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((r1 13)
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(r2 17))
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|}]
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;;
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let%expect_test "[sets_temporarily] with raise" =
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let r = ref 0 in
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require_does_raise [%here] (fun () ->
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Nothing.unreachable_code (sets_temporarily [ T (r, 1) ] ~f:(fun () -> failwith "")));
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[%expect {| (Failure "") |}];
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print_s [%message (r : int ref)];
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[%expect {| (r 0) |}]
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;;
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