def setUp(self):
        """
        Creates junk data that can be compressed and a test directory for any
        files that will be created
        """
        self.testdir = filepath.FilePath(self.mktemp())
        self.testdir.makedirs()
        self.unzipdir = self.testdir.child('unzipped')
        self.unzipdir.makedirs()

        Creates junk data that can be compressed and a test directory for any
        files that will be created
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_zipstream.py