tests.py 文件源码

def test_clear(self):
        self.assertEqual(len(self.q), 0)

        for i in range(10):
            # XXX: can't use same url for all requests as SpiderPriorityQueue
            # uses redis' set implemention and we will end with only one
            # request in the set and thus failing the test. It should be noted
            # that when using SpiderPriorityQueue it acts as a request
            # duplication filter whenever the serielized requests are the same.
            # This might be unwanted on repetitive requests to the same page
            # even with dont_filter=True flag.
            req = Request('http://example.com/?page=%s' % i)
            self.q.push(req)
        self.assertEqual(len(self.q), 10)

        self.q.clear()
        self.assertEqual(len(self.q), 0)