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|
open! Import
open! Maybe_bound
let%test_unit "bounds_crossed" =
let a, b, c, d = Incl 1, Excl 1, Incl 3, Excl 3 in
let cases =
[ a, a, false
; a, b, false
; a, c, false
; a, d, false
; b, a, false
; b, b, false
; b, c, false
; b, d, false
; c, a, true
; c, b, true
; c, c, false
; c, d, false
; d, a, true
; d, b, true
; d, c, false
; d, d, false
]
in
List.iter cases ~f:(fun (lower, upper, expect) ->
let actual = bounds_crossed ~lower ~upper ~compare in
assert ([%compare.equal: bool] expect actual))
;;
let%test_module "is_lower_bound" =
(module struct
let compare = Int.compare
let%test _ = is_lower_bound Unbounded ~of_:Int.min_value ~compare
let%test _ = not (is_lower_bound (Incl 2) ~of_:1 ~compare)
let%test _ = is_lower_bound (Incl 2) ~of_:2 ~compare
let%test _ = is_lower_bound (Incl 2) ~of_:3 ~compare
let%test _ = not (is_lower_bound (Excl 2) ~of_:1 ~compare)
let%test _ = not (is_lower_bound (Excl 2) ~of_:2 ~compare)
let%test _ = is_lower_bound (Excl 2) ~of_:3 ~compare
end)
;;
let%test_module "is_upper_bound" =
(module struct
let compare = Int.compare
let%test _ = is_upper_bound Unbounded ~of_:Int.max_value ~compare
let%test _ = is_upper_bound (Incl 2) ~of_:1 ~compare
let%test _ = is_upper_bound (Incl 2) ~of_:2 ~compare
let%test _ = not (is_upper_bound (Incl 2) ~of_:3 ~compare)
let%test _ = is_upper_bound (Excl 2) ~of_:1 ~compare
let%test _ = not (is_upper_bound (Excl 2) ~of_:2 ~compare)
let%test _ = not (is_upper_bound (Excl 2) ~of_:3 ~compare)
end)
;;
let%test_module "check_range" =
(module struct
let compare = Int.compare
let tests (lower, upper) cases =
List.iter cases ~f:(fun (n, comparison) ->
[%test_result: interval_comparison]
~expect:comparison
(compare_to_interval_exn n ~lower ~upper ~compare);
[%test_result: bool]
~expect:
(match comparison with
| In_range -> true
| _ -> false)
(interval_contains_exn n ~lower ~upper ~compare))
;;
let%test_unit _ =
tests
(Unbounded, Unbounded)
[ Int.min_value, In_range; 0, In_range; Int.max_value, In_range ]
;;
let%test_unit _ =
tests
(Incl 2, Incl 4)
[ 1, Below_lower_bound
; 2, In_range
; 3, In_range
; 4, In_range
; 5, Above_upper_bound
]
;;
let%test_unit _ =
tests
(Incl 2, Excl 4)
[ 1, Below_lower_bound
; 2, In_range
; 3, In_range
; 4, Above_upper_bound
; 5, Above_upper_bound
]
;;
let%test_unit _ =
tests
(Excl 2, Incl 4)
[ 1, Below_lower_bound
; 2, Below_lower_bound
; 3, In_range
; 4, In_range
; 5, Above_upper_bound
]
;;
let%test_unit _ =
tests
(Excl 2, Excl 4)
[ 1, Below_lower_bound
; 2, Below_lower_bound
; 3, In_range
; 4, Above_upper_bound
; 5, Above_upper_bound
]
;;
end)
;;
|
