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|
open! Import
open! Int_conversions
let%test_module "pretty" =
(module struct
let check input output =
List.for_all [ ""; "+"; "-" ] ~f:(fun prefix ->
let input = prefix ^ input in
let output = prefix ^ output in
[%compare.equal: string] output (insert_underscores input))
;;
let%test _ = check "1" "1"
let%test _ = check "12" "12"
let%test _ = check "123" "123"
let%test _ = check "1234" "1_234"
let%test _ = check "12345" "12_345"
let%test _ = check "123456" "123_456"
let%test _ = check "1234567" "1_234_567"
let%test _ = check "12345678" "12_345_678"
let%test _ = check "123456789" "123_456_789"
let%test _ = check "1234567890" "1_234_567_890"
end)
;;
let%test_module "conversions" =
(module struct
module type S = sig
include Int.S
val module_name : string
end
let test_conversion (type a b) loc ma mb a_to_b_or_error a_to_b_trunc b_to_a_trunc =
let (module A : S with type t = a) = ma in
let (module B : S with type t = b) = mb in
let examples =
[ A.min_value
; A.minus_one
; A.zero
; A.one
; A.max_value
; B.min_value |> b_to_a_trunc
; B.max_value |> b_to_a_trunc
]
|> List.concat_map ~f:(fun a -> [ A.pred a; a; A.succ a ])
|> List.dedup_and_sort ~compare:A.compare
|> List.sort ~compare:A.compare
in
List.iter examples ~f:(fun a ->
let b' = a_to_b_trunc a in
let a' = b_to_a_trunc b' in
match a_to_b_or_error a with
| Ok b ->
require
loc
(B.equal b b')
~if_false_then_print_s:
(lazy
[%message
"conversion produced wrong value"
~from:(A.module_name : string)
~to_:(B.module_name : string)
~input:(a : A.t)
~output:(b : B.t)
~expected:(b' : B.t)]);
require
loc
(A.equal a a')
~if_false_then_print_s:
(lazy
[%message
"conversion does not round-trip"
~from:(A.module_name : string)
~to_:(B.module_name : string)
~input:(a : A.t)
~output:(b : B.t)
~round_trip:(a' : A.t)])
| Error error ->
require
loc
(not (A.equal a a'))
~if_false_then_print_s:
(lazy
[%message
"conversion failed"
~from:(A.module_name : string)
~to_:(B.module_name : string)
~input:(a : A.t)
~expected_output:(b' : B.t)
~error:(error : Error.t)]))
;;
let test loc ma mb (a_to_b_trunc, a_to_b_or_error) (b_to_a_trunc, b_to_a_or_error) =
test_conversion loc ma mb a_to_b_or_error a_to_b_trunc b_to_a_trunc;
test_conversion loc mb ma b_to_a_or_error b_to_a_trunc a_to_b_trunc
;;
module Int = struct
include Int
let module_name = "Int"
end
module Int32 = struct
include Int32
let module_name = "Int32"
end
module Int64 = struct
include Int64
let module_name = "Int64"
end
module Nativeint = struct
include Nativeint
let module_name = "Nativeint"
end
let with_exn f x = Or_error.try_with (fun () -> f x)
let optional f x = Or_error.try_with (fun () -> Option.value_exn (f x))
let alwaysok f x = Ok (f x)
let%expect_test "int <-> int32" =
test
[%here]
(module Int)
(module Int32)
(Caml.Int32.of_int, with_exn int_to_int32_exn)
(Caml.Int32.to_int, with_exn int32_to_int_exn);
[%expect {| |}];
test
[%here]
(module Int)
(module Int32)
(Caml.Int32.of_int, optional int_to_int32)
(Caml.Int32.to_int, optional int32_to_int);
[%expect {| |}]
;;
let%expect_test "int <-> int64" =
test
[%here]
(module Int)
(module Int64)
(Caml.Int64.of_int, alwaysok int_to_int64)
(Caml.Int64.to_int, with_exn int64_to_int_exn);
[%expect {| |}];
test
[%here]
(module Int)
(module Int64)
(Caml.Int64.of_int, alwaysok int_to_int64)
(Caml.Int64.to_int, optional int64_to_int);
[%expect {| |}]
;;
let%expect_test "int <-> nativeint" =
test
[%here]
(module Int)
(module Nativeint)
(Caml.Nativeint.of_int, alwaysok int_to_nativeint)
(Caml.Nativeint.to_int, with_exn nativeint_to_int_exn);
[%expect {| |}];
test
[%here]
(module Int)
(module Nativeint)
(Caml.Nativeint.of_int, alwaysok int_to_nativeint)
(Caml.Nativeint.to_int, optional nativeint_to_int);
[%expect {| |}]
;;
let%expect_test "int32 <-> int64" =
test
[%here]
(module Int32)
(module Int64)
(Caml.Int64.of_int32, alwaysok int32_to_int64)
(Caml.Int64.to_int32, with_exn int64_to_int32_exn);
[%expect {| |}];
test
[%here]
(module Int32)
(module Int64)
(Caml.Int64.of_int32, alwaysok int32_to_int64)
(Caml.Int64.to_int32, optional int64_to_int32);
[%expect {| |}]
;;
let%expect_test "int32 <-> nativeint" =
test
[%here]
(module Int32)
(module Nativeint)
(Caml.Nativeint.of_int32, alwaysok int32_to_nativeint)
(Caml.Nativeint.to_int32, with_exn nativeint_to_int32_exn);
[%expect {| |}];
test
[%here]
(module Int32)
(module Nativeint)
(Caml.Nativeint.of_int32, alwaysok int32_to_nativeint)
(Caml.Nativeint.to_int32, optional nativeint_to_int32);
[%expect {| |}]
;;
let%expect_test "int64 <-> nativeint" =
test
[%here]
(module Int64)
(module Nativeint)
(Caml.Int64.to_nativeint, with_exn int64_to_nativeint_exn)
(Caml.Int64.of_nativeint, alwaysok nativeint_to_int64);
[%expect {| |}];
test
[%here]
(module Int64)
(module Nativeint)
(Caml.Int64.to_nativeint, optional int64_to_nativeint)
(Caml.Int64.of_nativeint, alwaysok nativeint_to_int64);
[%expect {| |}]
;;
end)
;;
|
