-if ($foo == 1) {print "ok 16\n";} else {print "not ok 16 $foo\n";}
-($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
- $blksize,$blocks) = stat('b');
-if ($^O eq 'MSWin32') { print "ok 17 # skipped: bogus (stat)[1]\n"; }
-elsif ($ino) {print "ok 17\n";} else {print "not ok 17\n";}
-if ($wd =~ m#/afs/# || $^O eq 'amigaos' || $^O eq 'dos' || $^O eq 'MSWin32')
- {print "ok 18 # skipped: granularity of the filetime\n";}
-elsif ($atime == 500000000 && $mtime == 500000000 + $delta)
- {print "ok 18\n";}
-else
- {print "not ok 18 $atime $mtime\n";}
-
-if ((unlink 'b') == 1) {print "ok 19\n";} else {print "not ok 19\n";}
+is($foo, 1, "utime");
+check_utime_result();
+
+utime undef, undef, 'b';
+($atime,$mtime) = (stat 'b')[8,9];
+print "# utime undef, undef --> $atime, $mtime\n";
+isnt($atime, 500000000, 'atime');
+isnt($mtime, 500000000 + $delta, 'mtime');
+
+SKIP: {
+ skip "no futimes", 4 unless ($Config{d_futimes} || "") eq "define";
+ open(my $fh, "<", 'b');
+ $foo = (utime 500000000,500000000 + $delta, $fh);
+ is($foo, 1, "futime");
+ check_utime_result();
+}
+
+
+sub check_utime_result {
+ ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+ $blksize,$blocks) = stat('b');
+
+ SKIP: {
+ skip "bogus inode num", 1 if ($^O eq 'MSWin32') || ($^O eq 'NetWare');
+
+ ok($ino, 'non-zero inode num');
+ }
+
+ SKIP: {
+ skip "filesystem atime/mtime granularity too low", 2
+ unless $accurate_timestamps;
+
+ print "# atime - $atime mtime - $mtime delta - $delta\n";
+ if($atime == 500000000 && $mtime == 500000000 + $delta) {
+ pass('atime');
+ pass('mtime');
+ }
+ else {
+ if ($^O =~ /\blinux\b/i) {
+ print "# Maybe stat() cannot get the correct atime, ".
+ "as happens via NFS on linux?\n";
+ $foo = (utime 400000000,500000000 + 2*$delta,'b');
+ my ($new_atime, $new_mtime) = (stat('b'))[8,9];
+ print "# newatime - $new_atime nemtime - $new_mtime\n";
+ if ($new_atime == $atime && $new_mtime - $mtime == $delta) {
+ pass("atime - accounted for possible NFS/glibc2.2 bug on linux");
+ pass("mtime - accounted for possible NFS/glibc2.2 bug on linux");
+ }
+ else {
+ fail("atime - $atime/$new_atime $mtime/$new_mtime");
+ fail("mtime - $atime/$new_atime $mtime/$new_mtime");
+ }
+ }
+ elsif ($^O eq 'VMS') {
+ # why is this 1 second off?
+ is( $atime, 500000001, 'atime' );
+ is( $mtime, 500000000 + $delta, 'mtime' );
+ }
+ elsif ($^O eq 'beos') {
+ SKIP: {
+ skip "atime not updated", 1;
+ }
+ is($mtime, 500000001, 'mtime');
+ }
+ else {
+ fail("atime");
+ fail("mtime");
+ }
+ }
+ }
+}
+
+SKIP: {
+ skip "has futimes", 1 if ($Config{d_futimes} || "") eq "define";
+ open(my $fh, "<", "b") || die;
+ eval { utime(undef, undef, $fh); };
+ like($@, qr/^The futimes function is unimplemented at/, "futimes is unimplemented");
+}
+
+is(unlink('b'), 1, "unlink b");
+