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import unittest
from scrapy.http import Request
from scrapy.dupefilter import RFPDupeFilter
class RFPDupeFilterTest(unittest.TestCase):
def test_filter(self):
filter = RFPDupeFilter()
filter.open()
r1 = Request('http://scrapytest.org/1')
r2 = Request('http://scrapytest.org/2')
r3 = Request('http://scrapytest.org/2')
assert not filter.request_seen(r1)
assert filter.request_seen(r1)
assert not filter.request_seen(r2)
assert filter.request_seen(r3)
filter.close('finished')
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