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diff --git a/python/samba/tests/samba_tool/base.py b/python/samba/tests/samba_tool/base.py
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+++ b/python/samba/tests/samba_tool/base.py
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+# Unix SMB/CIFS implementation.
+# Copyright (C) Sean Dague <sdague@linux.vnet.ibm.com> 2011
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+# This provides a wrapper around the cmd interface so that tests can
+# easily be built on top of it and have minimal code to run basic tests
+# of the commands. A list of the environmental variables can be found in
+# ~/selftest/selftest.pl
+#
+# These can all be accesses via os.environ["VARIBLENAME"] when needed
+
+import random
+import string
+from samba.auth import system_session
+from samba.samdb import SamDB
+from cStringIO import StringIO
+from samba.netcmd.main import cmd_sambatool
+import samba.tests
+
+class SambaToolCmdTest(samba.tests.TestCaseInTempDir):
+
+    def getSamDB(self, *argv):
+        """a convenience function to get a samdb instance so that we can query it"""
+
+        # We build a fake command to get the options created the same
+        # way the command classes do it. It would be better if the command
+        # classes had a way to more cleanly do this, but this lets us write
+        # tests for now
+        cmd = cmd_sambatool.subcommands["user"].subcommands["setexpiry"]
+        parser, optiongroups = cmd._create_parser("user")
+        opts, args = parser.parse_args(list(argv))
+        # Filter out options from option groups
+        args = args[1:]
+        kwargs = dict(opts.__dict__)
+        for option_group in parser.option_groups:
+            for option in option_group.option_list:
+                if option.dest is not None:
+                    del kwargs[option.dest]
+        kwargs.update(optiongroups)
+
+        H = kwargs.get("H", None)
+        sambaopts = kwargs.get("sambaopts", None)
+        credopts = kwargs.get("credopts", None)
+
+        lp = sambaopts.get_loadparm()
+        creds = credopts.get_credentials(lp, fallback_machine=True)
+
+        samdb = SamDB(url=H, session_info=system_session(),
+                      credentials=creds, lp=lp)
+        return samdb
+
+
+    def runcmd(self, name, *args):
+        """run a single level command"""
+        cmd = cmd_sambatool.subcommands[name]
+        cmd.outf = StringIO()
+        cmd.errf = StringIO()
+        result = cmd._run(name, *args)
+        return (result, cmd.outf.getvalue(), cmd.errf.getvalue())
+
+    def runsubcmd(self, name, sub, *args):
+        """run a command with sub commands"""
+        # The reason we need this function seperate from runcmd is
+        # that the .outf StringIO assignment is overriden if we use
+        # runcmd, so we can't capture stdout and stderr
+        cmd = cmd_sambatool.subcommands[name].subcommands[sub]
+        cmd.outf = StringIO()
+        cmd.errf = StringIO()
+        result = cmd._run(name, *args)
+        return (result, cmd.outf.getvalue(), cmd.errf.getvalue())
+
+    def assertCmdSuccess(self, val, msg=""):
+        self.assertIsNone(val, msg)
+
+    def assertCmdFail(self, val, msg=""):
+        self.assertIsNotNone(val, msg)
+
+    def assertMatch(self, base, string, msg=""):
+        self.assertTrue(string in base, msg)
+
+    def randomName(self, count=8):
+        """Create a random name, cap letters and numbers, and always starting with a letter"""
+        name = random.choice(string.ascii_uppercase)
+        name += ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase+ string.digits) for x in range(count - 1))
+        return name
+
+    def randomPass(self, count=16):
+        name = random.choice(string.ascii_uppercase)
+        name += random.choice(string.digits)
+        name += random.choice(string.ascii_lowercase)
+        name += ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase+ string.digits) for x in range(count - 3))
+        return name
+
+    def randomXid(self):
+        # pick some hopefully unused, high UID/GID range to avoid interference
+        # from the system the test runs on
+        xid = random.randint(4711000, 4799000)
+        return xid
+
+    def assertWithin(self, val1, val2, delta, msg=""):
+        """Assert that val1 is within delta of val2, useful for time computations"""
+        self.assertTrue(((val1 + delta) > val2) and ((val1 - delta) < val2), msg)