def test_prePathURL(self):
        req = FakeRequest(currentSegments=['a'], uri='/a/b')
        self.assertEqual(req.prePathURL(), 'http://localhost/a')
Verify that L{FakeRequest.prePathURL} returns the prepath of the
dataset/ETHPy150Open twisted/nevow/nevow/test/test_testutil.py/TestFakeRequest.test_prePathURL