It's useful to use the findTestCases utility function to find all the test cases in the current module, instead of makeSuite'ing each test case manually. For example, instead of:

  import unittest

  class TestProxyBase(unittest.TestCase):
      def _makeOne(self, id, resource):
          from Products.davproxy.resource import ProxyBase
          return ProxyBase(id, resource)

      def test_getId(self):
          p = self._makeOne('theid', None)
          self.assertEqual(p.getId(), 'theid')

      def test_getId_utf8(self):
          p = self._makeOne(u'dummytitle-\u03cb', None)
          self.assertEqual(p.getId().decode('utf-8'), u'dummytitle-\u03cb')

  def test_suite():
      return unittest.TestSuite((
          unittest.makeSuite(TestProxyBase),
          ))

  if __name__ == '__main__':
      unittest.main(defaultTest='test_suite')

I really want do do this, so I don't have to keep adding stuff to "test_suite" when I add more test cases to the module:

  import unittest

  class TestProxyBase(unittest.TestCase):
      def _makeOne(self, id, resource):
          from Products.davproxy.resource import ProxyBase
          return ProxyBase(id, resource)

      def test_getId(self):
          p = self._makeOne('theid', None)
          self.assertEqual(p.getId(), 'theid')

      def test_getId_utf8(self):
          p = self._makeOne(u'dummytitle-\u03cb', None)
          self.assertEqual(p.getId().decode('utf-8'), u'dummytitle-\u03cb')

  def test_suite():
      import sys
      return unittest.findTestCases(sys.modules[__name__])

  if __name__ == '__main__':
      unittest.main(defaultTest='test_suite')