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from unittest import TestCase
from scrapy.spidermiddlewares.urllength import UrlLengthMiddleware
from scrapy.http import Response, Request
from scrapy.spiders import Spider
class TestUrlLengthMiddleware(TestCase):
def test_process_spider_output(self):
res = Response('http://scrapytest.org')
short_url_req = Request('http://scrapytest.org/')
long_url_req = Request('http://scrapytest.org/this_is_a_long_url')
reqs = [short_url_req, long_url_req]
mw = UrlLengthMiddleware(maxlength=25)
spider = Spider('foo')
out = list(mw.process_spider_output(res, reqs, spider))
self.assertEqual(out, [short_url_req])
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