Add tests from the old svn tree

We're losing the svn history (which we could probably keep if we tried
hard enough) but don't consider that worthwhile.

Note these tests are destructive, so run them only in a throwaway
environment like a chroot, container, or vm.

The tests/run.all script should be the one which launches all the tests.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

tests/usertools/25_usermod-G_locked_group/usermod.test

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+. ../../common/config.sh
+. ../../common/log.sh
+
+log_start "$0" "usermod -G checks if the group file is locked"
+
+save_config
+
+# restore the files on exit
+trap 'log_status "$0" "FAILURE"; restore_config; rm -f /etc/group.lock' 0
+
+change_config
+
+echo -n "Create lock file for /etc/group..."
+touch /etc/group.lock
+echo "done"
+
+echo -n "Change the user's list of supplementary groups (usermod -G bin foo)..."
+usermod -G bin foo 2>tmp/usermod.err && exit 1 || {
+	status=$?
+}
+echo "OK"
+
+rm -f /etc/group.lock
+
+echo -n "Check returned status ($status)..."
+test "$status" = "10"
+echo "OK"
+
+echo "usermod reported:"
+echo "======================================================================="
+cat tmp/usermod.err
+echo "======================================================================="
+echo -n "Check that there were a failure message..."
+diff -au data/usermod.err tmp/usermod.err
+echo "error message OK."
+rm -f tmp/usermod.err
+
+echo -n "Check the passwd file..."
+../../common/compare_file.pl config/etc/passwd /etc/passwd
+echo "OK"
+echo -n "Check the group file..."
+../../common/compare_file.pl config/etc/group /etc/group
+echo "OK"
+echo -n "Check the shadow file..."
+../../common/compare_file.pl config/etc/shadow /etc/shadow
+echo "OK"
+echo -n "Check the gshadow file..."
+../../common/compare_file.pl config/etc/gshadow /etc/gshadow
+echo "OK"
+
+log_status "$0" "SUCCESS"
+restore_config
+trap '' 0
+