def test_del_contains(self):
        headers = HeaderKeyDict()
        headers['Content-Length'] = 0
        self.assertTrue('Content-Length' in headers)
        del headers['Content-Length']
        self.assertTrue('Content-Length' not in headers)
dataset/ETHPy150Open openstack/swift/test/unit/common/test_header_key_dict.py/TestHeaderKeyDict.test_del_contains/original