Add a lot of tests for combinations of values, offsets and lengths

[p5sagit/p5-mst-13.2.git] / t / op / groups.t

diff --git a/t/op/groups.t b/t/op/groups.t
index 8676504..695f989 100755 (executable)
--- a/t/op/groups.t
+++ b/t/op/groups.t
@@ -1,25 +1,128 @@
 #!./perl
 
-if (-x '/usr/ucb/groups') {
-    $groups_command = '/usr/ucb/groups';
-} elsif (-x '/usr/bin/groups') {
-    $groups_command = '/usr/bin/groups';
-} else {
-    print "1..0\n";
+$ENV{PATH} ="/bin:/usr/bin:/usr/xpg4/bin:/usr/ucb" .
+    exists $ENV{PATH} ? ":$ENV{PATH}" : "";
+$ENV{LC_ALL} = "C"; # so that external utilities speak English
+$ENV{LANGUAGE} = 'C'; # GNU locale extension
+
+BEGIN {
+    chdir 't';
+    @INC = '../lib';
+
+    require Config;
+    if ($@) {
+       print "1..0 # Skip: no Config\n";
+    } else {
+       Config->import;
+    }
+}
+
+sub quit {
+    print "1..0 # Skip: no `id` or `groups`\n";
+    exit 0;
+}
+
+unless (eval { getgrgid(0); 1 }) {
+    print "1..0 # Skip: getgrgid() not implemented\n";
     exit 0;
 }
 
+quit() if (($^O eq 'MSWin32' || $^O eq 'NetWare') or $^O =~ /lynxos/i);
+
+# We have to find a command that prints all (effective
+# and real) group names (not ids).  The known commands are:
+# groups
+# id -Gn
+# id -a
+# Beware 1: some systems do just 'id -G' even when 'id -Gn' is used.
+# Beware 2: id -Gn or id -a format might be id(name) or name(id).
+# Beware 3: the groups= might be anywhere in the id output.
+# Beware 4: groups can have spaces ('id -a' being the only defense against this)
+# Beware 5: id -a might not contain the groups= part.
+#
+# That is, we might meet the following:
+#
+# foo bar zot                          # accept
+# foo 22 42 bar zot                    # accept
+# 1 22 42 2 3                          # reject
+# groups=(42),foo(1),bar(2),zot me(3)  # parse
+# groups=22,42,1(foo),2(bar),3(zot me) # parse
+#
+# and the groups= might be after, before, or between uid=... and gid=...
+
+GROUPS: {
+    # prefer 'id' over 'groups' (is this ever wrong anywhere?)
+    # and 'id -a' over 'id -Gn' (the former is good about spaces in group names)
+    if (($groups = `id -a 2>/dev/null`) ne '') {
+       # $groups is of the form:
+       # uid=39957(gsar) gid=22(users) groups=33536,39181,22(users),0(root),1067(dev)
+       last GROUPS if $groups =~ /groups=/;
+    }
+    if (($groups = `id -Gn 2>/dev/null`) ne '') {
+       # $groups could be of the form:
+       # users 33536 39181 root dev
+       last GROUPS if $groups !~ /^(\d|\s)+$/;
+    }
+    if (($groups = `groups 2>/dev/null`) ne '') {
+       # may not reflect all groups in some places, so do a sanity check
+       if (-d '/afs') {
+           print <<EOM;
+# These test results *may* be bogus, as you appear to have AFS,
+# and I can't find a working 'id' in your PATH (which I have set
+# to '$ENV{PATH}').
+#
+# If these tests fail, report the particular incantation you use
+# on this platform to find *all* the groups that an arbitrary
+# user may belong to, using the 'perlbug' program.
+EOM
+       }
+       last GROUPS;
+    }
+    # Okay, not today.
+    quit();
+}
+
+chomp($groups);
+
+print "# groups = $groups\n";
+
+# Remember that group names can contain whitespace, '-', et cetera.
+# That is: do not \w, do not \S.
+if ($groups =~ /groups=(.+)( [ug]id=|$)/) {
+    my $gr = $1;
+    my @g0 = split /,/, $gr;
+    my @g1;
+    # prefer names over numbers
+    for (@g0) {
+        # 42(zot me)
+       if (/^(\d+)(?:\(([^)]+)\))?/) {
+           push @g1, ($2 || $1);
+       }
+        # zot me(42)
+       elsif (/^([^(]*)\((\d+)\)/) {
+           push @g1, ($1 || $2);
+       }
+       else {
+           print "# ignoring group entry [$_]\n";
+       }
+    }
+    print "# groups=$gr\n";
+    print "# g0 = @g0\n";
+    print "# g1 = @g1\n";
+    $groups = "@g1";
+}
+
 print "1..2\n";
 
 $pwgid = $( + 0;
 ($pwgnam) = getgrgid($pwgid);
-@basegroup{$pwgid,$pwgnam} = (1,1);
-
 $seen{$pwgid}++;
 
+print "# pwgid = $pwgid, pwgnam = $pwgnam\n";
+
 for (split(' ', $()) {
-    next if $seen{$_}++;
     ($group) = getgrgid($_);
+    next if (! defined $group or ! grep { $_ eq $group } @gr) and $seen{$_}++;
     if (defined $group) {
        push(@gr, $group);
     }
@@ -28,14 +131,37 @@ for (split(' ', $()) {
     }
 } 
 
-$gr1 = join(' ', sort @gr);
+print "# gr = @gr\n";
 
-$gr2 = join(' ', grep(!$basegroup{$_}++, sort split(' ',`$groups_command`)));
+if ($^O =~ /^(?:uwin|cygwin|solaris)$/) {
+       # Or anybody else who can have spaces in group names.
+       $gr1 = join(' ', grep(!$did{$_}++, sort split(' ', join(' ', @gr))));
+} else {
+       $gr1 = join(' ', sort @gr);
+}
+
+if ($Config{myuname} =~ /^cygwin_nt/i) { # basegroup on CYGWIN_NT has id = 0.
+    @basegroup{$pwgid,$pwgnam} = (0,0);
+} else {
+    @basegroup{$pwgid,$pwgnam} = (1,1);
+}
+$gr2 = join(' ', grep(!$basegroup{$_}++, sort split(' ',$groups)));
 
-if ($gr1 eq $gr2) {
+my $ok1 = 0;
+if ($gr1 eq $gr2 || ($gr1 eq '' && $gr2 eq $pwgid)) {
     print "ok 1\n";
+    $ok1++;
 }
-else {
+elsif ($Config{myuname} =~ /^cygwin_nt/i) { # basegroup on CYGWIN_NT has id = 0.
+    # Retry in default unix mode
+    %basegroup = ( $pwgid => 1, $pwgnam => 1 );
+    $gr2 = join(' ', grep(!$basegroup{$_}++, sort split(' ',$groups)));
+    if ($gr1 eq $gr2 || ($gr1 eq '' && $gr2 eq $pwgid)) {
+       print "ok 1 # This Cygwin behaves like Unix (Win2k?)\n";
+       $ok1++;
+    }
+}
+unless ($ok1) {
     print "#gr1 is <$gr1>\n";
     print "#gr2 is <$gr2>\n";
     print "not ok 1\n";