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import unittest
from scrapy.http import Request
from scrapy.spider import BaseSpider
from scrapy.contrib.dupefilter import RequestFingerprintDupeFilter, NullDupeFilter
class RequestFingerprintDupeFilterTest(unittest.TestCase):
def test_filter(self):
spider = BaseSpider()
filter = RequestFingerprintDupeFilter()
filter.open_spider(spider)
r1 = Request('http://scrapytest.org/1')
r2 = Request('http://scrapytest.org/2')
r3 = Request('http://scrapytest.org/2')
assert not filter.request_seen(spider, r1)
assert filter.request_seen(spider, r1)
assert not filter.request_seen(spider, r2)
assert filter.request_seen(spider, r3)
filter.close_spider(spider)
class NullDupeFilterTest(unittest.TestCase):
def test_filter(self):
spider = BaseSpider()
filter = NullDupeFilter()
filter.open_spider(spider)
r1 = Request('http://scrapytest.org/1')
assert not filter.request_seen(spider, r1)
filter.close_spider(spider)
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