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open! Base
open! Blit
include Test_blit_intf
module type S_gen = sig
open Blit
type 'a src
type 'a dst
val blito : ('a src, 'a dst) blito
val sub : ('a src, 'a dst) sub
end
module type For_tests_gen = sig
module Elt : sig
type 'a t
val equal : bool t -> bool t -> bool
val of_bool : bool -> bool t
end
type 'a z
module Src : sig
type 'a t
val length : _ t -> int
val create_bool : len:int -> bool z t
val get : 'a z t -> int -> 'a Elt.t
val set : 'a z t -> int -> 'a Elt.t -> unit
end
module Dst : sig
type 'a t
val length : _ t -> int
val create_bool : len:int -> bool z t
val get : 'a z t -> int -> 'a Elt.t
val set : 'a z t -> int -> 'a Elt.t -> unit
val overlapping_src_dst : [ `Do_not_check | `Check of 'a Src.t -> 'a t ]
end
end
module Test_gen
(For_tests : For_tests_gen)
(Tested : S_gen
with type 'a src := 'a For_tests.Src.t
with type 'a dst := 'a For_tests.Dst.t) =
struct
open Tested
open For_tests
let init ~len ~create ~set ~f =
let t = create ~len in
for i = 0 to len - 1 do
set t i (f i)
done;
t
;;
let elt1 = Elt.of_bool true
let elt2 = Elt.of_bool false
let () = assert (not (Elt.equal elt1 elt2))
let src_bit i = if i land 0x1 = 0 then elt1 else elt2
let dst_bit i = if i land 0x1 = 0 then elt2 else elt1
let%test_unit _ =
let n = 4 in
for src_length = 0 to n do
for dst_length = 0 to n do
for src_pos = 0 to src_length do
for dst_pos = 0 to dst_length do
for src_len = 0 to min (src_length - src_pos) (dst_length - dst_pos) do
try
let is_in_range i = i >= dst_pos && i < dst_pos + src_len in
let check length get name sequence ~expect =
for i = 0 to length sequence - 1 do
if not (Elt.equal (get sequence i) (expect i))
then raise_s [%message "bug" (name : string) (i : int)]
done
in
let check_src = check Src.length Src.get in
let check_dst = check Dst.length Dst.get in
let src =
init ~len:src_length ~create:Src.create_bool ~set:Src.set ~f:src_bit
in
assert (Src.length src = src_length);
let dst =
init ~len:dst_length ~create:Dst.create_bool ~set:Dst.set ~f:dst_bit
in
assert (Dst.length dst = dst_length);
let init_src () =
for i = 0 to src_length - 1 do
Src.set src i (src_bit i)
done
in
blito ~src ~src_pos ~src_len ~dst ~dst_pos ();
check_src "blit src" src ~expect:src_bit;
check_dst "blit dst" dst ~expect:(fun i ->
if is_in_range i then src_bit (src_pos + i - dst_pos) else dst_bit i);
(match Dst.overlapping_src_dst with
| `Do_not_check -> ()
| `Check src_to_dst ->
if dst_pos + src_len <= src_length
then (
init_src ();
let dst = src_to_dst src in
if false
then (
blito ~src ~src_pos ~src_len ~dst ~dst_pos ();
check_dst "blit dst overlapping" dst ~expect:(fun i ->
src_bit (if is_in_range i then src_pos + i - dst_pos else i)))));
init_src ();
let dst = sub src ~pos:src_pos ~len:src_len in
check_src "sub src" src ~expect:src_bit;
check_dst "sub dst" dst ~expect:(fun i -> src_bit (src_pos + i))
with
| exn ->
raise_s
[%message
"bug"
(exn : exn)
(src_length : int)
(src_pos : int)
(dst_length : int)
(dst_pos : int)]
done
done
done
done
done
;;
let%test_unit _ =
let src = init ~len:4 ~create:Src.create_bool ~set:Src.set ~f:src_bit in
let dst = init ~len:8 ~create:Dst.create_bool ~set:Dst.set ~f:dst_bit in
let assert_raises f = assert (Exn.does_raise f) in
assert_raises (fun () -> blito ~src ~src_pos:(-1) ~src_len:4 ~dst ~dst_pos:0 ());
assert_raises (fun () -> blito ~src ~src_pos:0 ~src_len:4 ~dst ~dst_pos:(-1) ());
assert_raises (fun () -> blito ~src ~src_pos:5 ~src_len:1 ~dst ~dst_pos:0 ());
assert_raises (fun () -> blito ~src ~src_pos:0 ~src_len:8 ~dst ~dst_pos:0 ());
assert_raises (fun () -> blito ~src ~src_pos:0 ~src_len:4 ~dst ~dst_pos:5 ());
assert_raises (fun () -> blito ~src ~src_pos:0 ~src_len:4 ~dst ~dst_pos:8 ())
;;
end
module Test1
(Sequence : Sequence1 with type 'a elt := 'a poly)
(Tested : S1 with type 'a t := 'a Sequence.t) =
Test_gen
(struct
module Elt = struct
type 'a t = 'a
let equal = Poly.equal
let of_bool = Fn.id
end
type 'a z = 'a Sequence.z
module Src = Sequence
module Dst = struct
include Sequence
let overlapping_src_dst = `Check Fn.id
end
end)
(Tested)
module Test1_generic
(Elt : Elt1)
(Sequence : Sequence1 with type 'a elt := 'a Elt.t)
(Tested : S1 with type 'a t := 'a Sequence.t) =
Test_gen
(struct
module Elt = Elt
type 'a z = 'a Sequence.z
module Src = Sequence
module Dst = struct
include Sequence
let overlapping_src_dst = `Check Fn.id
end
end)
(Tested)
module Elt_to_elt1 (Elt : Elt) = struct
type 'a t = Elt.t
let equal = Elt.equal
let of_bool = Elt.of_bool
end
module Test
(Elt : Elt)
(Sequence : Sequence with type elt := Elt.t)
(Tested : S with type t := Sequence.t) =
Test_gen
(struct
module Elt = Elt_to_elt1 (Elt)
type 'a z = unit
module Src = struct
open Sequence
type nonrec 'a t = t
let length = length
let get = get
let set = set
let create_bool = create
end
module Dst = struct
include Src
let overlapping_src_dst = `Check Fn.id
end
end)
(Tested)
module Test_distinct
(Elt : Elt)
(Src : Sequence with type elt := Elt.t)
(Dst : Sequence with type elt := Elt.t)
(Tested : S_distinct with type src := Src.t with type dst := Dst.t) =
Test_gen
(struct
module Elt = Elt_to_elt1 (Elt)
type 'a z = unit
module Src = struct
open Src
type nonrec 'a t = t
let length = length
let get = get
let set = set
let create_bool = create
end
module Dst = struct
open Dst
type nonrec 'a t = t
let length = length
let get = get
let set = set
let create_bool = create
let overlapping_src_dst = `Do_not_check
end
end)
(Tested)
module Make_and_test
(Elt : Elt) (Sequence : sig
include Sequence with type elt := Elt.t
val unsafe_blit : (t, t) blit
end) =
struct
module B = Make (Sequence)
include Test (Elt) (Sequence) (B)
include B
end
module Make_distinct_and_test
(Elt : Elt)
(Src : Sequence with type elt := Elt.t) (Dst : sig
include Sequence with type elt := Elt.t
val unsafe_blit : (Src.t, t) blit
end) =
struct
module B = Make_distinct (Src) (Dst)
include Test_distinct (Elt) (Src) (Dst) (B)
include B
end
module Make1_and_test (Sequence : sig
include Blit.Sequence1
include Sequence1 with type 'a t := 'a t with type 'a elt := 'a poly
end) =
struct
module B = Make1 (Sequence)
include Test1 (Sequence) (B)
include B
end
module Make1_generic_and_test
(Elt : Elt1) (Sequence : sig
include Blit.Sequence1
include Sequence1 with type 'a t := 'a t with type 'a elt := 'a Elt.t
end) =
struct
module B = Make1_generic (Sequence)
include Test1_generic (Elt) (Sequence) (B)
include B
end