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59 lines
2.4 KiB
Python
59 lines
2.4 KiB
Python
import unittest
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from scrapy.downloadermiddlewares.ajaxcrawl import AjaxCrawlMiddleware
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from scrapy.spiders import Spider
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from scrapy.http import Request, HtmlResponse, Response
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from scrapy.utils.test import get_crawler
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__doctests__ = ['scrapy.downloadermiddlewares.ajaxcrawl']
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class AjaxCrawlMiddlewareTest(unittest.TestCase):
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def setUp(self):
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crawler = get_crawler(Spider, {'AJAXCRAWL_ENABLED': True})
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self.spider = crawler._create_spider('foo')
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self.mw = AjaxCrawlMiddleware.from_crawler(crawler)
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def _ajaxcrawlable_body(self):
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return b'<html><head><meta name="fragment" content="!"/></head><body></body></html>'
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def _req_resp(self, url, req_kwargs=None, resp_kwargs=None):
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req = Request(url, **(req_kwargs or {}))
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resp = HtmlResponse(url, request=req, **(resp_kwargs or {}))
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return req, resp
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def test_non_get(self):
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req, resp = self._req_resp('http://example.com/', {'method': 'HEAD'})
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resp2 = self.mw.process_response(req, resp, self.spider)
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self.assertEqual(resp, resp2)
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def test_binary_response(self):
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req = Request('http://example.com/')
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resp = Response('http://example.com/', body=b'foobar\x00\x01\x02', request=req)
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resp2 = self.mw.process_response(req, resp, self.spider)
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self.assertIs(resp, resp2)
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def test_ajaxcrawl(self):
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req, resp = self._req_resp(
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'http://example.com/',
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{'meta': {'foo': 'bar'}},
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{'body': self._ajaxcrawlable_body()}
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)
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req2 = self.mw.process_response(req, resp, self.spider)
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self.assertEqual(req2.url, 'http://example.com/?_escaped_fragment_=')
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self.assertEqual(req2.meta['foo'], 'bar')
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def test_ajaxcrawl_loop(self):
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req, resp = self._req_resp('http://example.com/', {}, {'body': self._ajaxcrawlable_body()})
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req2 = self.mw.process_response(req, resp, self.spider)
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resp2 = HtmlResponse(req2.url, body=resp.body, request=req2)
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resp3 = self.mw.process_response(req2, resp2, self.spider)
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assert isinstance(resp3, HtmlResponse), (resp3.__class__, resp3)
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self.assertEqual(resp3.request.url, 'http://example.com/?_escaped_fragment_=')
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assert resp3 is resp2
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def test_noncrawlable_body(self):
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req, resp = self._req_resp('http://example.com/', {}, {'body': b'<html></html>'})
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resp2 = self.mw.process_response(req, resp, self.spider)
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self.assertIs(resp, resp2)
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