#!./perl
-print "1..39\n";
+BEGIN {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+ require './test.pl';
+}
-chdir('op') || chdir('t/op') || die "sysio.t: cannot look for myself: $!";
+plan tests => 48;
-open(I, 'sysio.t') || die "sysio.t: cannot find myself: $!";
+open(I, 'op/sysio.t') || die "sysio.t: cannot find myself: $!";
-$reopen = ($^O eq 'VMS' || $^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'dos' ||
+$reopen = ($^O eq 'VMS' ||
+ $^O eq 'os2' ||
+ $^O eq 'MSWin32' ||
+ $^O eq 'NetWare' ||
+ $^O eq 'dos' ||
$^O eq 'mpeix');
$x = 'abc';
# should not be able to do negative lengths
eval { sysread(I, $x, -1) };
-print 'not ' unless ($@ =~ /^Negative length /);
-print "ok 1\n";
+like($@, qr/^Negative length /);
# $x should be intact
-print 'not ' unless ($x eq 'abc');
-print "ok 2\n";
+is($x, 'abc');
# should not be able to read before the buffer
eval { sysread(I, $x, 1, -4) };
-print 'not ' unless ($x eq 'abc');
-print "ok 3\n";
+like($@, qr/^Offset outside string /);
# $x should be intact
-print 'not ' unless ($x eq 'abc');
-print "ok 4\n";
+is($x, 'abc');
$a ='0123456789';
# default offset 0
-print 'not ' unless(sysread(I, $a, 3) == 3);
-print "ok 5\n";
+is(sysread(I, $a, 3), 3);
# $a should be as follows
-print 'not ' unless ($a eq '#!.');
-print "ok 6\n";
+is($a, '#!.');
# reading past the buffer should zero pad
-print 'not ' unless(sysread(I, $a, 2, 5) == 2);
-print "ok 7\n";
+is(sysread(I, $a, 2, 5), 2);
# the zero pad should be seen now
-print 'not ' unless ($a eq "#!.\0\0/p");
-print "ok 8\n";
+is($a, "#!.\0\0/p");
# try changing the last two characters of $a
-print 'not ' unless(sysread(I, $a, 3, -2) == 3);
-print "ok 9\n";
+is(sysread(I, $a, 3, -2), 3);
# the last two characters of $a should have changed (into three)
-print 'not ' unless ($a eq "#!.\0\0erl");
-print "ok 10\n";
+is($a, "#!.\0\0erl");
-$outfile = 'sysio.out';
+$outfile = tempfile();
open(O, ">$outfile") || die "sysio.t: cannot write $outfile: $!";
# cannot write negative lengths
eval { syswrite(O, $x, -1) };
-print 'not ' unless ($@ =~ /^Negative length /);
-print "ok 11\n";
+like($@, qr/^Negative length /);
# $x still intact
-print 'not ' unless ($x eq 'abc');
-print "ok 12\n";
+is($x, 'abc');
# $outfile still intact
-print 'not ' if (-s $outfile);
-print "ok 13\n";
+ok(!-s $outfile);
# should not be able to write from after the buffer
-eval { syswrite(O, $x, 1, 3) };
-print 'not ' unless ($@ =~ /^Offset outside string /);
-print "ok 14\n";
+eval { syswrite(O, $x, 1, 4) };
+like($@, qr/^Offset outside string /);
# $x still intact
-print 'not ' unless ($x eq 'abc');
-print "ok 15\n";
+is($x, 'abc');
+
+# but it should be ok to write from the end of the buffer
+syswrite(O, $x, 0, 3);
+syswrite(O, $x, 1, 3);
# $outfile still intact
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' if (-s $outfile);
-print "ok 16\n";
+ok(!-s $outfile);
# should not be able to write from before the buffer
eval { syswrite(O, $x, 1, -4) };
-print 'not ' unless ($@ =~ /^Offset outside string /);
-print "ok 17\n";
+like($@, qr/^Offset outside string /);
+
+# $x still intact
+is($x, 'abc');
+
+# $outfile still intact
+if ($reopen) { # must close file to update EOF marker for stat
+ close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
+}
+ok(!-s $outfile);
+
+# [perl #67912] syswrite prints garbage if called with empty scalar and non-zero offset
+eval { my $buf = ''; syswrite(O, $buf, 1, 1) };
+like($@, qr/^Offset outside string /);
+
+# $x still intact
+is($x, 'abc');
+
+# $outfile still intact
+if ($reopen) { # must close file to update EOF marker for stat
+ close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
+}
+ok(!-s $outfile);
+
+eval { my $buf = 'x'; syswrite(O, $buf, 1, 2) };
+like($@, qr/^Offset outside string /);
# $x still intact
-print 'not ' unless ($x eq 'abc');
-print "ok 18\n";
+is($x, 'abc');
# $outfile still intact
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' if (-s $outfile);
-print "ok 19\n";
+ok(!-s $outfile);
# default offset 0
-print 'not ' unless (syswrite(O, $a, 2) == 2);
-print "ok 20\n";
+if (syswrite(O, $a, 2) == 2){
+ pass();
+} else {
+ diag($!);
+ fail();
+ # most other tests make no sense after e.g. "No space left on device"
+ die $!;
+}
+
# $a still intact
-print 'not ' unless ($a eq "#!.\0\0erl");
-print "ok 21\n";
+is($a, "#!.\0\0erl");
# $outfile should have grown now
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' unless (-s $outfile == 2);
-print "ok 22\n";
+is(-s $outfile, 2);
# with offset
-print 'not ' unless (syswrite(O, $a, 2, 5) == 2);
-print "ok 23\n";
+is(syswrite(O, $a, 2, 5), 2);
# $a still intact
-print 'not ' unless ($a eq "#!.\0\0erl");
-print "ok 24\n";
+is($a, "#!.\0\0erl");
# $outfile should have grown now
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' unless (-s $outfile == 4);
-print "ok 25\n";
+is(-s $outfile, 4);
# with negative offset and a bit too much length
-print 'not ' unless (syswrite(O, $a, 5, -3) == 3);
-print "ok 26\n";
+is(syswrite(O, $a, 5, -3), 3);
# $a still intact
-print 'not ' unless ($a eq "#!.\0\0erl");
-print "ok 27\n";
+is($a, "#!.\0\0erl");
# $outfile should have grown now
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' unless (-s $outfile == 7);
-print "ok 28\n";
+is(-s $outfile, 7);
# with implicit length argument
-print 'not ' unless (syswrite(O, $x) == 3);
-print "ok 29\n";
+is(syswrite(O, $x), 3);
# $a still intact
-print 'not ' unless ($x eq "abc");
-print "ok 30\n";
+is($x, "abc");
# $outfile should have grown now
if ($reopen) { # must close file to update EOF marker for stat
close O; open(O, ">>$outfile") || die "sysio.t: cannot write $outfile: $!";
}
-print 'not ' unless (-s $outfile == 10);
-print "ok 31\n";
+is(-s $outfile, 10);
close(O);
$b = 'xyz';
# reading too much only return as much as available
-print 'not ' unless (sysread(I, $b, 100) == 10);
-print "ok 32\n";
+is(sysread(I, $b, 100), 10);
+
# this we should have
-print 'not ' unless ($b eq '#!ererlabc');
-print "ok 33\n";
+is($b, '#!ererlabc');
# test sysseek
-print 'not ' unless sysseek(I, 2, 0) == 2;
-print "ok 34\n";
+is(sysseek(I, 2, 0), 2);
sysread(I, $b, 3);
-print 'not ' unless $b eq 'ere';
-print "ok 35\n";
+is($b, 'ere');
-print 'not ' unless sysseek(I, -2, 1) == 3;
-print "ok 36\n";
+is(sysseek(I, -2, 1), 3);
sysread(I, $b, 4);
-print 'not ' unless $b eq 'rerl';
-print "ok 37\n";
+is($b, 'rerl');
-print 'not ' unless sysseek(I, 0, 0) eq '0 but true';
-print "ok 38\n";
-print 'not ' if defined sysseek(I, -1, 1);
-print "ok 39\n";
+ok(sysseek(I, 0, 0) eq '0 but true');
+
+ok(not defined sysseek(I, -1, 1));
close(I);
-unlink $outfile;
+unlink_all $outfile;
+
+# Check that utf8 IO doesn't upgrade the scalar
+open(I, ">$outfile") || die "sysio.t: cannot write $outfile: $!";
+# Will skip harmlessly on stdioperl
+eval {binmode STDOUT, ":utf8"};
+die $@ if $@ and $@ !~ /^IO layers \(like ':utf8'\) unavailable/;
+
+# y diaresis is \w when UTF8
+$a = chr 255;
+
+unlike($a, qr/\w/);
+
+syswrite I, $a;
+
+# Should not be upgraded as a side effect of syswrite.
+unlike($a, qr/\w/);
+
+# This should work
+eval {syswrite I, 2;};
+is($@, '');
+
+close(I);
+unlink_all $outfile;
-chdir('..');
+chdir('..');
1;
https://perl5.git.perl.org / perl5.git / blobdiff