test/int.ss
```#lang planet chongkai/sml

(* Auxiliary functions for test cases *)

infix 1 seq
fun e1 seq e2 = e2;
fun check b = if b then "OK" else "WRONG";
fun check' f = (if f () then "OK" else "WRONG") handle _ => "EXN";

fun range (from, to) p =
let open Int
in
(from > to) orelse (p from) andalso (range (from+1, to) p)
end;

fun checkrange bounds = check o range bounds;

fun tst0 s s' = print (s ^ "    \t" ^ s' ^ "\n");
fun tst  s b = tst0 s (check  b);
fun tst' s f = tst0 s (check' f);

fun tstrange s bounds = (tst s) o range bounds

(* test/int.sml -- here we test only the `exotic' operations
PS 1995-02-25, 1996-07-02 *)

(*KILL 05/11/1997 10:59. tho.:
use "auxil.sml";
*)

val _ = print "\nFile int.sml: Testing structure Int...\n"

local
open Int
infix 7 quot rem
fun divmod s (i, d, q, r)  = tst s (i div d = q andalso i mod d = r);
fun quotrem s (i, d, q, r) = tst s (i quot d = q andalso i rem d = r);
in

val test1a = divmod "test1a" (10, 3, 3, 1);
val test1b = divmod "test1b" (~10, 3, ~4, 2);
val test1c = divmod "test1c" (~10, ~3, 3, ~1);
val test1d = divmod "test1d" (10, ~3, ~4, ~2);

val test2a = quotrem "test2a" (10, 3, 3, 1);
val test2b = quotrem "test2b" (~10, 3, ~3, ~1);
val test2c = quotrem "test2c" (~10, ~3, 3, ~1);
val test2d = quotrem "test2d" (10, ~3, ~3, 1);

val test3 = tst "test3" (max(~5, 2) =  2 andalso max(5, 2) = 5);
val test4 = tst "test4" (min(~5, 3) = ~5 andalso min(5, 2) = 2);

val test5 = tst "test5" (sign ~57 = ~1 andalso sign 99 = 1 andalso sign 0 = 0);
val test6 = tst "test6" (sameSign(~255, ~256) andalso sameSign(255, 256)
andalso sameSign(0, 0));

val test12 =
tst0 "test12" (case (minInt, maxInt) of
(SOME mi, SOME ma) => check(sign mi = ~1 andalso sign ma = 1
andalso sameSign(mi, ~1) andalso sameSign(ma, 1))
| (NONE, NONE)       => "OK"
| _                  => "WRONG")

fun chk f (s, r) =
tst' "chk" (fn _ =>
case f s of
SOME res => res = r
| NONE     => false)

fun chkScan fmt = chk (StringCvt.scanString (scan fmt))

val test13a =
List.map (chk fromString)
[("10789", 10789),
("+10789", 10789),
("~10789", ~10789),
("-10789", ~10789),
(" \n\t10789crap", 10789),
(" \n\t+10789crap", 10789),
(" \n\t~10789crap", ~10789),
(" \n\t-10789crap", ~10789),
("0w123", 0),
("0W123", 0),
("0x123", 0),
("0X123", 0),
("0wx123", 0),
("0wX123", 0)];

val test13b =
List.map (fn s => tst0 "test13b" (case fromString s of NONE => "OK" | _ => "WRONG"))
["", "-", "~", "+", " \n\t", " \n\t-", " \n\t~", " \n\t+",
"+ 1", "~ 1", "- 1", "ff"];

val test14a =
List.map (chkScan StringCvt.DEC)
[("10789", 10789),
("+10789", 10789),
("~10789", ~10789),
("-10789", ~10789),
(" \n\t10789crap", 10789),
(" \n\t+10789crap", 10789),
(" \n\t~10789crap", ~10789),
(" \n\t-10789crap", ~10789),
("0w123", 0),
("0W123", 0),
("0x123", 0),
("0X123", 0),
("0wx123", 0),
("0wX123", 0)];

val test14b =
List.map (fn s => tst0 "test14b" (case StringCvt.scanString (scan StringCvt.DEC) s
of NONE => "OK" | _ => "WRONG"))
["", "-", "~", "+", " \n\t", " \n\t-", " \n\t~", " \n\t+",
"+ 1", "~ 1", "- 1", "ff"];

val test15a =
List.map (chkScan StringCvt.BIN)
[("10010", 18),
("+10010", 18),
("~10010", ~18),
("-10010", ~18),
(" \n\t10010crap", 18),
(" \n\t+10010crap", 18),
(" \n\t~10010crap", ~18),
(" \n\t-10010crap", ~18),
("0w101", 0),
("0W101", 0),
("0x101", 0),
("0X101", 0),
("0wx101", 0),
("0wX101", 0)];

val test15b =
List.map (fn s => tst0 "test15b" (case StringCvt.scanString (scan StringCvt.BIN) s
of NONE => "OK" | _ => "WRONG"))
["", "-", "~", "+", " \n\t", " \n\t-", " \n\t~", " \n\t+",
"+ 1", "~ 1", "- 1", "2", "8", "ff"];

val test16a =
List.map (chkScan StringCvt.OCT)
[("2071", 1081),
("+2071", 1081),
("~2071", ~1081),
("-2071", ~1081),
(" \n\t2071crap", 1081),
(" \n\t+2071crap", 1081),
(" \n\t~2071crap", ~1081),
(" \n\t-2071crap", ~1081),
("0w123", 0),
("0W123", 0),
("0x123", 0),
("0X123", 0),
("0wx123", 0),
("0wX123", 0)];

val test16b =
List.map (fn s => tst0 "test16b" (case StringCvt.scanString (scan StringCvt.OCT) s
of NONE => "OK" | _ => "WRONG"))
["", "-", "~", "+", " \n\t", " \n\t-", " \n\t~", " \n\t+",
"+ 1", "~ 1", "- 1", "8", "ff"];

val test17a =
List.map (chkScan StringCvt.HEX)
[("20Af", 8367),
("+20Af", 8367),
("~20Af", ~8367),
("-20Af", ~8367),
(" \n\t20AfGrap", 8367),
(" \n\t+20AfGrap", 8367),
(" \n\t~20AfGrap", ~8367),
(" \n\t-20AfGrap", ~8367),
("0w123", 0),
("0W123", 0),
("0x", 0),
("0x ", 0),
("0xG", 0),
("0X", 0),
("0XG", 0),
("0x123", 291),
("0X123", 291),
("-0x123", ~291),
("-0X123", ~291),
("~0x123", ~291),
("~0X123", ~291),
("+0x123", 291),
("+0X123", 291),
("0wx123", 0),
("0wX123", 0)];

val test17b =
List.map (fn s => tst0 "test17b" (case StringCvt.scanString (scan StringCvt.HEX) s
of NONE => "OK" | _ => "WRONG"))
["", "-", "~", "+", " \n\t", " \n\t-", " \n\t~", " \n\t+",
"+ 1", "~ 1", "- 1"];

local
fun fromToString i =
fromString (toString i) = SOME i;

in
val test18 =
tst' "test18" (fn _ => range (~1200, 1200) fromToString);

val test19 =
tst' "test19" (fn _ => range (~1200, 1200) (scanFmt StringCvt.BIN));

val test20 =
tst' "test20" (fn _ => range (~1200, 1200) (scanFmt StringCvt.OCT));

val test21 =
tst' "test21" (fn _ => range (~1200, 1200) (scanFmt StringCvt.DEC));

val test22 =
tst' "test22" (fn _ => range (~1200, 1200) (scanFmt StringCvt.HEX));

end

end
```