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(* 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/textio.sml
PS 1995-11-22, 1996-04-18
*)
(*KILL 05/11/1997 11:03. tho.:
use "auxil.sml";
*)
val _ = print "Testing TextIO...\n";
local
open TextIO
fun fileSize s =
let val is = openIn s
in size (inputAll is) before closeIn is end;
fun dup 0 s = s
| dup n s = dup (n-1) (s^s)
val longstring = dup 5 "abcdefg" (* was 16 but because `limit stack` = 8192 kbytes on frigg
* I received a SIGSEGV for stack growth failure. *)
in
val empty = openOut "empty.dat";
val small = openOut "small1.dat";
val medium = openOut "medium.dat";
val text = openOut "text.dat";
val test1 =
tst' "test1" (fn _ =>
(closeOut empty;
fileSize "empty.dat" = 0
andalso fileSize "empty.dat" = 0));
val test2 =
tst' "test2" (fn _ =>
(output1(small, #"+");
closeOut small;
fileSize "small1.dat" = 1
andalso fileSize "small1.dat" = 1));
val test3 =
tst' "test3" (fn _ =>
let val small = openOut "small2.dat"
in
output(small, "*");
closeOut small;
fileSize "small2.dat" = 1 andalso fileSize "small2.dat" = 1
end);
val test4 =
tst' "test4" (fn _ =>
(output(medium, longstring);
closeOut medium;
fileSize "medium.dat" = size longstring
andalso fileSize "medium.dat" = size longstring))
val test5 =
tst' "test5" (fn _ =>
let val small = openAppend "small2.dat"
in
output(small, "1");
closeOut small;
fileSize "small2.dat" = 2 andalso fileSize "small2.dat" = 2
end);
val test6 =
tst' "test6" (fn _ =>
(output(text, "Line 1\n");
output(text, "Line 2\n");
output(text, "Line 3");
closeOut text;
fileSize "text.dat" = 20 andalso fileSize "text.dat" = 20));
(* Test that stdErr is flushed immediately, that flushOut works, and
* that print flushes stdOut. Assumes that stdOut is *not* flushed
* immediately: *)
val _ =
let fun stdo s = output(stdOut, s)
fun stde s = output(stdErr, s)
in
print "Two lines of output follow:\n";
stdo "3"; stde "1"; stdo "4"; stde "2";
flushOut stdOut;
stde " <--- this should read 1234\n";
stdo "2"; stde "1"; print "3"; stde "4"; stdo "5";
flushOut stdOut;
stde " <--- this should read 12345\n"
end;
val test7a =
tst' "test7a" (fn _ =>
let val is = openIn "empty.dat"
in
(endOfStream is
andalso input1 is = NONE
andalso endOfStream is
andalso input1 is = NONE)
before closeIn is
end);
val test7b =
tst' "test7b" (fn _ =>
let val is = openIn "small1.dat"
in
(not (endOfStream is)
andalso input1 is = SOME #"+"
andalso endOfStream is
andalso input1 is = NONE
andalso input1 is = NONE)
before closeIn is
end);
val test7c =
tst' "test7c" (fn _ =>
let val is = openIn "small2.dat"
in
(not (endOfStream is)
andalso input1 is = SOME #"*"
andalso not (endOfStream is)
andalso input1 is = SOME #"1"
andalso endOfStream is
andalso input1 is = NONE
andalso input1 is = NONE)
before closeIn is
end);
val test8a =
tst' "test8a" (fn _ =>
let val is = openIn "empty.dat"
in
(inputN(is, 0) = ""
andalso inputN(is, 1) = ""
andalso inputN(is, 100) = ""
andalso endOfStream is)
before closeIn is
end);
val test8b =
tst' "test8b" (fn _ =>
let val is = openIn "small1.dat"
in
(inputN(is, 0) = ""
andalso inputN(is, 1) = "+"
andalso inputN(is, 100) = "")
before closeIn is
end);
val test8c =
tst' "test8c" (fn _ =>
let val is = openIn "small1.dat"
in
(inputN(is, 0) = ""
andalso inputN(is, 100) = "+"
andalso inputN(is, 100) = "")
before closeIn is
end);
val test8d =
tst' "test8d" (fn _ =>
let val is = openIn "small2.dat"
in
(inputN(is, 0) = ""
andalso inputN(is, 1) = "*"
andalso inputN(is, 100) = "1"
andalso inputN(is, 100) = "")
before closeIn is
end);
val test8e =
tst' "test8e" (fn _ =>
let val is = openIn "medium.dat"
in
(inputN(is, 0) = ""
andalso inputN(is, 15) = "abcdefgabcdefga"
andalso inputN(is, 15) = "bcdefgabcdefgab"
andalso inputN(is, 0) = ""
andalso not (endOfStream is))
before closeIn is
end);
val test8f =
tst' "test8f" (fn _ =>
let val is = openIn "medium.dat"
in
(inputN(is, 500000) = longstring
andalso inputN(is, 100) = ""
andalso endOfStream is)
before closeIn is
end);
val test9a =
tst' "test9a" (fn _ =>
let val is = openIn "empty.dat"
in
(lookahead is = NONE
andalso input is = ""
andalso lookahead is = NONE
andalso input is = "")
before closeIn is
end);
val test9b =
tst' "test9b" (fn _ =>
let val is = openIn "small1.dat"
in
(lookahead is = SOME #"+"
andalso input is = "+"
andalso input is = ""
andalso lookahead is = NONE)
before closeIn is
end);
val test9c =
tst' "test9c" (fn _ =>
let val is = openIn "small2.dat"
in
(lookahead is = SOME #"*"
andalso input is = "*1"
andalso input is = ""
andalso lookahead is = NONE)
before closeIn is
end);
val test9d =
tst' "test9d" (fn _ =>
let val is = openIn "small2.dat"
in
(input is = "*1"
andalso input is = "")
before closeIn is
end);
val test9e =
tst' "test9e" (fn _ =>
let val is = openIn "medium.dat"
in
lookahead is = SOME #"a"
andalso String.substring(input is, 0, 15) = "abcdefgabcdefga"
before closeIn is
end);
val test10 =
tst' "test10" (fn _ =>
let val is = openIn "medium.dat"
in
(lookahead is = SOME #"a"
andalso input1 is = SOME #"a"
andalso lookahead is = SOME #"b"
andalso input1 is = SOME #"b"
andalso lookahead is = SOME #"c")
before closeIn is
end);
val test11 =
tst' "test11" (fn _ =>
let val is = openIn "medium.dat"
in
(lookahead is = SOME #"a"
andalso inputN(is, 5) = "abcde"
andalso lookahead is = SOME #"f"
andalso inputN(is, 4) = "fgab"
andalso lookahead is = SOME #"c")
before closeIn is
end);
val test12a =
tst' "test12a" (fn _ =>
let val is = openIn "empty.dat"
in
(inputLine is = NONE
andalso inputLine is = NONE)
before closeIn is
end);
val test12b =
tst' "test12b" (fn _ =>
let val is = openIn "small1.dat"
in
(inputLine is = SOME "+\n"
andalso inputLine is = NONE)
before closeIn is
end);
val test12c =
tst' "test12c" (fn _ =>
let val is = openIn "text.dat"
in
(inputLine is = SOME "Line 1\n"
andalso inputLine is = SOME "Line 2\n"
andalso inputLine is = SOME "Line 3\n"
andalso inputLine is = NONE)
before closeIn is
end);
val test12d =
tst' "test12d" (fn _ =>
let val is = openIn "medium.dat"
in
(inputLine is = SOME (longstring ^ "\n")
andalso inputLine is = NONE)
before closeIn is
end);
(* Test that outputSubstr works *)
val _ =
let fun stdo s i n = outputSubstr(stdOut, Substring.substring(s, i, n))
fun stde s = output(stdErr, s)
val abcde = "abcde"
in
print "Two lines of output follow:\n";
stdo abcde 0 1; stdo abcde 1 3;
stdo "" 0 0; stdo abcde 0 0; stdo abcde 5 0; stdo abcde 3 0;
stdo abcde 4 1;
flushOut stdOut;
stde " <--- this should read abcde\n";
stdo abcde 0 5;
flushOut stdOut;
stde " <--- this should read abcde\n"
end;
end
|
