def teest_mark_visited(self):
url_db=url_saver_mysql.url_saver_mysql("localhost",8090)
url_db.add("http://www.sohu.com/3.html","task5")
url_db.add("http://www.sohu.com/4.html","task5")
url_db.mark_error("http://www.sohu.com/2.html","task5")
url_db.mark_visited("http://www.sohu.com/3.html","task5")
self.assertEqual(url_db.pop("task5"),"http://www.sohu.com/4.html")
def test_save(self):
''' test if the url saver works as expected'''
url_db=url_saver_mysql.url_saver_mysql("localhost",8090)
url_db.add("http://www.sohu.com/","task3")
self.assertEqual(url_db.pop("task3"),"http://www.sohu.com/")
