mirror of https://github.com/scrapy/scrapy.git
99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
from __future__ import with_statement
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from unittest import TestCase
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from os.path import join, abspath, dirname
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from scrapy.spider import BaseSpider
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from scrapy.http import Response, Request
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from scrapy.contrib.downloadermiddleware.httpcompression import HttpCompressionMiddleware
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from scrapy.tests import tests_datadir
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SAMPLEDIR = join(tests_datadir, 'compressed')
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FORMAT = {
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'gzip': ('html-gzip.bin', 'gzip'),
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'rawdeflate': ('html-rawdeflate.bin', 'deflate'),
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'zlibdeflate': ('html-zlibdeflate.bin', 'deflate'),
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}
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class HttpCompressionTest(TestCase):
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def setUp(self):
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self.spider = BaseSpider('foo')
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self.mw = HttpCompressionMiddleware()
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def _getresponse(self, coding):
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if coding not in FORMAT:
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raise ValueError()
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samplefile, contentencoding = FORMAT[coding]
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with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
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body = sample.read()
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headers = {
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'Server': 'Yaws/1.49 Yet Another Web Server',
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'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
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'Content-Length': len(body),
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'Content-Type': 'text/html',
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'Content-Encoding': contentencoding,
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}
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response = Response('http://scrapytest.org/', body=body, headers=headers)
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response.request = Request('http://scrapytest.org', headers={'Accept-Encoding': 'gzip,deflate'})
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return response
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def test_process_request(self):
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request = Request('http://scrapytest.org')
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assert 'Accept-Encoding' not in request.headers
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self.mw.process_request(request, self.spider)
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self.assertEqual(request.headers.get('Accept-Encoding'), 'gzip,deflate')
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def test_process_response_gzip(self):
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response = self._getresponse('gzip')
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request = response.request
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self.assertEqual(response.headers['Content-Encoding'], 'gzip')
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newresponse = self.mw.process_response(request, response, self.spider)
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assert newresponse is not response
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assert newresponse.body.startswith('<!DOCTYPE')
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assert 'Content-Encoding' not in newresponse.headers
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def test_process_response_rawdeflate(self):
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response = self._getresponse('rawdeflate')
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request = response.request
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self.assertEqual(response.headers['Content-Encoding'], 'deflate')
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newresponse = self.mw.process_response(request, response, self.spider)
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assert newresponse is not response
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assert newresponse.body.startswith('<!DOCTYPE')
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assert 'Content-Encoding' not in newresponse.headers
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def test_process_response_zlibdelate(self):
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response = self._getresponse('zlibdeflate')
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request = response.request
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self.assertEqual(response.headers['Content-Encoding'], 'deflate')
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newresponse = self.mw.process_response(request, response, self.spider)
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assert newresponse is not response
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assert newresponse.body.startswith('<!DOCTYPE')
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assert 'Content-Encoding' not in newresponse.headers
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def test_process_response_plain(self):
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response = Response('http://scrapytest.org', body='<!DOCTYPE...')
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request = Request('http://scrapytest.org')
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assert not response.headers.get('Content-Encoding')
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newresponse = self.mw.process_response(request, response, self.spider)
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assert newresponse is response
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assert newresponse.body.startswith('<!DOCTYPE')
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def test_multipleencodings(self):
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response = self._getresponse('gzip')
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response.headers['Content-Encoding'] = ['uuencode', 'gzip']
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request = response.request
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newresponse = self.mw.process_response(request, response, self.spider)
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assert newresponse is not response
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self.assertEqual(newresponse.headers.getlist('Content-Encoding'), ['uuencode'])
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