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from unittest import TestCase
from scrapy.contrib.downloadermiddleware.defaultheaders import DefaultHeadersMiddleware
from scrapy.http import Request
from scrapy.spider import Spider
from scrapy.utils.test import get_crawler
class TestDefaultHeadersMiddleware(TestCase):
def get_defaults_spider_mw(self):
crawler = get_crawler()
spider = Spider('foo')
spider.set_crawler(crawler)
defaults = dict([(k, [v]) for k, v in \
crawler.settings.get('DEFAULT_REQUEST_HEADERS').iteritems()])
return defaults, spider, DefaultHeadersMiddleware.from_crawler(crawler)
def test_process_request(self):
defaults, spider, mw = self.get_defaults_spider_mw()
req = Request('http://www.scrapytest.org')
mw.process_request(req, spider)
self.assertEquals(req.headers, defaults)
def test_update_headers(self):
defaults, spider, mw = self.get_defaults_spider_mw()
headers = {'Accept-Language': ['es'], 'Test-Header': ['test']}
req = Request('http://www.scrapytest.org', headers=headers)
self.assertEquals(req.headers, headers)
mw.process_request(req, spider)
defaults.update(headers)
self.assertEquals(req.headers, defaults)
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