python测试驱动开发

import unittestfrom main import Sampleclass SampleTest(unittest.TestCase):    def setUp(self):        print "create a new Sample"        self._sample = Sample("b64e5843ca7db8199c405be565fa7f57")    def tearDown(self):        print "Destory the sample"        self._sample = None    def test_GetVirusNameFromVT(self):        "this md5 has the VT info"        aSample = Sample("b64e5843ca7db8199c405be565fa7f57")        dict_virusName = aSample._GetVirusNameFromVT()        self.assertTrue(dict_virusName!=None)    def test_GetVirusNameFromVT2(self):        "this md5 has not the VT info"        aSample = Sample("2b666ffe98e465523e514d2b93b7666a")        dict_virusName = aSample._GetVirusNameFromVT ()        self.assertTrue(len(dict_virusName) == 0)if __name__=="__main__":    #unittest.main()    suite = unittest.TestLoader().loadTestsFromTestCase(SampleTest)    unittest.TextTestRunner(verbosity=2).run(suite)