def test_getRootURL(self):
        request = FakeRequest()
        self.assertIdentical(request.getRootURL(), None)
        request.rememberRootURL("foo/bar")
        self.assertEqual(request.getRootURL(), "foo/bar")
L{FakeRequest.getRootURL} returns C{None} when
dataset/ETHPy150Open twisted/nevow/nevow/test/test_testutil.py/TestFakeRequest.test_getRootURL