--- /dev/null
+# Source library for shell script tests
+#
+# Copyright (C) 2011 Colin Walters <walters@verbum.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# Author: Colin Walters <walters@verbum.org>
+
+TMPDIR=${TMPDIR:-/tmp}
+export TMPDIR
+test_tmpdir=`mktemp -d "$TMPDIR/hacktree-tests.XXXXXXXXXX"`
+cd "$test_tmpdir"
+touch "$test_tmpdir/.test$$"
+
+die () {
+ test -f "$test_tmpdir/.test$$" && rm -rf "$test_tmpdir"
+}
+
+trap 'die' EXIT