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55 lines
2.2 KiB
Python
55 lines
2.2 KiB
Python
from unittest import TestCase
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from scrapy.downloadermiddlewares.useragent import UserAgentMiddleware
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from scrapy.http import Request
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from scrapy.spiders import Spider
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from scrapy.utils.test import get_crawler
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class UserAgentMiddlewareTest(TestCase):
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def get_spider_and_mw(self, default_useragent):
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crawler = get_crawler(Spider, {"USER_AGENT": default_useragent})
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spider = crawler._create_spider("foo")
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return spider, UserAgentMiddleware.from_crawler(crawler)
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def test_default_agent(self):
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spider, mw = self.get_spider_and_mw("default_useragent")
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req = Request("http://scrapytest.org/")
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assert mw.process_request(req, spider) is None
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self.assertEqual(req.headers["User-Agent"], b"default_useragent")
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def test_remove_agent(self):
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# settings USER_AGENT to None should remove the user agent
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spider, mw = self.get_spider_and_mw("default_useragent")
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spider.user_agent = None
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mw.spider_opened(spider)
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req = Request("http://scrapytest.org/")
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assert mw.process_request(req, spider) is None
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assert req.headers.get("User-Agent") is None
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def test_spider_agent(self):
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spider, mw = self.get_spider_and_mw("default_useragent")
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spider.user_agent = "spider_useragent"
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mw.spider_opened(spider)
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req = Request("http://scrapytest.org/")
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assert mw.process_request(req, spider) is None
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self.assertEqual(req.headers["User-Agent"], b"spider_useragent")
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def test_header_agent(self):
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spider, mw = self.get_spider_and_mw("default_useragent")
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spider.user_agent = "spider_useragent"
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mw.spider_opened(spider)
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req = Request(
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"http://scrapytest.org/", headers={"User-Agent": "header_useragent"}
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)
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assert mw.process_request(req, spider) is None
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self.assertEqual(req.headers["User-Agent"], b"header_useragent")
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def test_no_agent(self):
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spider, mw = self.get_spider_and_mw(None)
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spider.user_agent = None
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mw.spider_opened(spider)
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req = Request("http://scrapytest.org/")
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assert mw.process_request(req, spider) is None
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assert "User-Agent" not in req.headers
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