class UserAgentMiddlewareTest(TestCase):
def setUp(self):
self.spider = BaseSpider()
self.mw = UserAgentMiddleware()
def tearDown(self):
del self.mw
def test_default_agent(self):
self.mw.default_useragent = 'default_useragent'
req = Request('http://scrapytest.org/')
assert self.mw.process_request(req, self.spider) is None
self.assertEquals(req.headers['User-Agent'], 'default_useragent')
# None or not present user_agent attribute is the same
self.spider.user_agent = None
req = Request('http://scrapytest.org/')
assert self.mw.process_request(req, self.spider) is None
self.assertEquals(req.headers['User-Agent'], 'default_useragent')
def test_spider_agent(self):
self.mw.default_useragent = 'default_useragent'
self.spider.user_agent = 'spider_useragent'
req = Request('http://scrapytest.org/')
assert self.mw.process_request(req, self.spider) is None
self.assertEquals(req.headers['User-Agent'], 'spider_useragent')
def test_header_agent(self):
self.mw.default_useragent = 'default_useragent'
self.spider.user_agent = 'spider_useragent'
req = Request('http://scrapytest.org/', headers={'User-Agent': 'header_useragent'})
assert self.mw.process_request(req, self.spider) is None
self.assertEquals(req.headers['User-Agent'], 'header_useragent')
def test_no_agent(self):
self.mw.default_useragent = None
self.spider.user_agent = None
req = Request('http://scrapytest.org/')
assert self.mw.process_request(req, self.spider) is None
assert 'User-Agent' not in req.headers
def __init__(self, user_agent=''):
UserAgentMiddleware.__init__(self)
self.user_agent = user_agent
def get_spider_and_mw(self, default_useragent):
crawler = get_crawler({'USER_AGENT': default_useragent})
spider = Spider('foo')
spider.set_crawler(crawler)
return spider, UserAgentMiddleware.from_crawler(crawler)
def setUp(self):
self.spider = BaseSpider()
self.mw = UserAgentMiddleware()