class HttpCompressionTest(TestCase):
def setUp(self):
self.spider = Spider('foo')
self.mw = HttpCompressionMiddleware()
def _getresponse(self, coding):
if coding not in FORMAT:
raise ValueError()
samplefile, contentencoding = FORMAT[coding]
with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
body = sample.read()
headers = {
'Server': 'Yaws/1.49 Yet Another Web Server',
'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
'Content-Length': len(body),
'Content-Type': 'text/html',
'Content-Encoding': contentencoding,
}
response = Response('http://scrapytest.org/', body=body, headers=headers)
response.request = Request('http://scrapytest.org', headers={'Accept-Encoding': 'gzip,deflate'})
return response
def test_process_request(self):
request = Request('http://scrapytest.org')
assert 'Accept-Encoding' not in request.headers
self.mw.process_request(request, self.spider)
self.assertEqual(request.headers.get('Accept-Encoding'),
b','.join(ACCEPTED_ENCODINGS))
def test_process_response_gzip(self):
response = self._getresponse('gzip')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_br(self):
try:
import brotli
except ImportError:
raise SkipTest("no brotli")
response = self._getresponse('br')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'br')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b"<!DOCTYPE")
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_rawdeflate(self):
response = self._getresponse('rawdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_zlibdelate(self):
response = self._getresponse('zlibdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_plain(self):
response = Response('http://scrapytest.org', body=b'<!DOCTYPE...')
request = Request('http://scrapytest.org')
assert not response.headers.get('Content-Encoding')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is response
assert newresponse.body.startswith(b'<!DOCTYPE')
def test_multipleencodings(self):
response = self._getresponse('gzip')
response.headers['Content-Encoding'] = ['uuencode', 'gzip']
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
self.assertEqual(newresponse.headers.getlist('Content-Encoding'), [b'uuencode'])
def test_process_response_encoding_inside_body(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = Response("http;//www.example.com/", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_force_recalculate_encoding(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = HtmlResponse("http;//www.example.com/page.html", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_no_content_type_header(self):
headers = {
'Content-Encoding': 'identity',
}
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
respcls = responsetypes.from_args(url="http://www.example.com/index", headers=headers, body=plainbody)
response = respcls("http://www.example.com/index", headers=headers, body=plainbody)
request = Request("http://www.example.com/index")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, respcls)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_gzipped_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzip_app_octetstream_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzip_binary_octetstream_contenttype(self):
response = self._getresponse('x-gzip')
response.headers['Content-Type'] = 'binary/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzipped_gzip_file(self):
"""Test that a gzip Content-Encoded .gz file is gunzipped
only once by the middleware, leaving gunzipping of the file
to upper layers.
"""
headers = {
'Content-Type': 'application/gzip',
'Content-Encoding': 'gzip',
}
# build a gzipped file (here, a sitemap)
f = BytesIO()
plainbody = b"""<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
<url>
<loc>http://www.example.com/</loc>
<lastmod>2009-08-16</lastmod>
<changefreq>daily</changefreq>
<priority>1</priority>
</url>
<url>
<loc>http://www.example.com/Special-Offers.html</loc>
<lastmod>2009-08-16</lastmod>
<changefreq>weekly</changefreq>
<priority>0.8</priority>
</url>
</urlset>"""
gz_file = GzipFile(fileobj=f, mode='wb')
gz_file.write(plainbody)
gz_file.close()
# build a gzipped response body containing this gzipped file
r = BytesIO()
gz_resp = GzipFile(fileobj=r, mode='wb')
gz_resp.write(f.getvalue())
gz_resp.close()
response = Response("http;//www.example.com/", headers=headers, body=r.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
self.assertEqual(gunzip(newresponse.body), plainbody)
def test_process_response_head_request_no_decode_required(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
request.method = 'HEAD'
response = response.replace(body = None)
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.body, b'')
class HttpCompressionTest(TestCase):
def setUp(self):
self.spider = Spider('foo')
self.mw = HttpCompressionMiddleware()
def _getresponse(self, coding):
if coding not in FORMAT:
raise ValueError()
samplefile, contentencoding = FORMAT[coding]
with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
body = sample.read()
headers = {
'Server': 'Yaws/1.49 Yet Another Web Server',
'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
'Content-Length': len(body),
'Content-Type': 'text/html',
'Content-Encoding': contentencoding,
}
response = Response('http://scrapytest.org/',
body=body,
headers=headers)
response.request = Request('http://scrapytest.org',
headers={'Accept-Encoding': 'gzip,deflate'})
return response
def test_process_request(self):
request = Request('http://scrapytest.org')
assert 'Accept-Encoding' not in request.headers
self.mw.process_request(request, self.spider)
self.assertEqual(request.headers.get('Accept-Encoding'),
b','.join(ACCEPTED_ENCODINGS))
def test_process_response_gzip(self):
response = self._getresponse('gzip')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_br(self):
try:
import brotli
except ImportError:
raise SkipTest("no brotli")
response = self._getresponse('br')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'br')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b"<!DOCTYPE")
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_rawdeflate(self):
response = self._getresponse('rawdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_zlibdelate(self):
response = self._getresponse('zlibdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_plain(self):
response = Response('http://scrapytest.org', body=b'<!DOCTYPE...')
request = Request('http://scrapytest.org')
assert not response.headers.get('Content-Encoding')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is response
assert newresponse.body.startswith(b'<!DOCTYPE')
def test_multipleencodings(self):
response = self._getresponse('gzip')
response.headers['Content-Encoding'] = ['uuencode', 'gzip']
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
self.assertEqual(newresponse.headers.getlist('Content-Encoding'),
[b'uuencode'])
def test_process_response_encoding_inside_body(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = Response("http;//www.example.com/",
headers=headers,
body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_force_recalculate_encoding(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = HtmlResponse("http;//www.example.com/page.html",
headers=headers,
body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_no_content_type_header(self):
headers = {
'Content-Encoding': 'identity',
}
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
respcls = responsetypes.from_args(url="http://www.example.com/index",
headers=headers,
body=plainbody)
response = respcls("http://www.example.com/index",
headers=headers,
body=plainbody)
request = Request("http://www.example.com/index")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, respcls)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_gzipped_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'], b'application/gzip')
def test_process_response_gzip_app_octetstream_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'],
b'application/octet-stream')
def test_process_response_gzip_binary_octetstream_contenttype(self):
response = self._getresponse('x-gzip')
response.headers['Content-Type'] = 'binary/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'],
b'binary/octet-stream')
def test_process_response_head_request_no_decode_required(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
request.method = 'HEAD'
response = response.replace(body=None)
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEquals(response.body, b'')
class HttpCompressionTest(TestCase):
def setUp(self):
self.spider = Spider('foo')
self.mw = HttpCompressionMiddleware()
def _getresponse(self, coding):
if coding not in FORMAT:
raise ValueError()
samplefile, contentencoding = FORMAT[coding]
with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
body = sample.read()
headers = {
'Server': 'Yaws/1.49 Yet Another Web Server',
'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
'Content-Length': len(body),
'Content-Type': 'text/html',
'Content-Encoding': contentencoding,
}
response = Response('http://scrapytest.org/', body=body, headers=headers)
response.request = Request('http://scrapytest.org', headers={'Accept-Encoding': 'gzip,deflate'})
return response
def test_process_request(self):
request = Request('http://scrapytest.org')
assert 'Accept-Encoding' not in request.headers
self.mw.process_request(request, self.spider)
self.assertEqual(request.headers.get('Accept-Encoding'), b'gzip,deflate')
def test_process_response_gzip(self):
response = self._getresponse('gzip')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_rawdeflate(self):
response = self._getresponse('rawdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_zlibdelate(self):
response = self._getresponse('zlibdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_plain(self):
response = Response('http://scrapytest.org', body=b'<!DOCTYPE...')
request = Request('http://scrapytest.org')
assert not response.headers.get('Content-Encoding')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is response
assert newresponse.body.startswith(b'<!DOCTYPE')
def test_multipleencodings(self):
response = self._getresponse('gzip')
response.headers['Content-Encoding'] = ['uuencode', 'gzip']
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
self.assertEqual(newresponse.headers.getlist('Content-Encoding'), [b'uuencode'])
def test_process_response_encoding_inside_body(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = Response("http;//www.example.com/", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_force_recalculate_encoding(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = HtmlResponse("http;//www.example.com/page.html", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_gzipped_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'], b'application/gzip')
def test_process_response_gzip_app_octetstream_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'], b'application/octet-stream')
def test_process_response_gzip_binary_octetstream_contenttype(self):
response = self._getresponse('x-gzip')
response.headers['Content-Type'] = 'binary/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
self.assertEqual(response.headers['Content-Type'], b'binary/octet-stream')
def test_process_response_head_request_no_decode_required(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
request.method = 'HEAD'
response = response.replace(body = None)
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEquals(response.body, b'')
class HttpCompressionTest(TestCase):
def setUp(self):
self.spider = Spider('foo')
self.mw = HttpCompressionMiddleware()
def _getresponse(self, coding):
if coding not in FORMAT:
raise ValueError()
samplefile, contentencoding = FORMAT[coding]
with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
body = sample.read()
headers = {
'Server': 'Yaws/1.49 Yet Another Web Server',
'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
'Content-Length': len(body),
'Content-Type': 'text/html',
'Content-Encoding': contentencoding,
}
response = Response('http://scrapytest.org/',
body=body,
headers=headers)
response.request = Request('http://scrapytest.org',
headers={'Accept-Encoding': 'gzip,deflate'})
return response
def test_process_request(self):
request = Request('http://scrapytest.org')
assert 'Accept-Encoding' not in request.headers
self.mw.process_request(request, self.spider)
self.assertEqual(request.headers.get('Accept-Encoding'),
'gzip,deflate')
def test_process_response_gzip(self):
response = self._getresponse('gzip')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], 'gzip')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith('<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_rawdeflate(self):
response = self._getresponse('rawdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], 'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith('<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_zlibdelate(self):
response = self._getresponse('zlibdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], 'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith('<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_plain(self):
response = Response('http://scrapytest.org', body='<!DOCTYPE...')
request = Request('http://scrapytest.org')
assert not response.headers.get('Content-Encoding')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is response
assert newresponse.body.startswith('<!DOCTYPE')
def test_multipleencodings(self):
response = self._getresponse('gzip')
response.headers['Content-Encoding'] = ['uuencode', 'gzip']
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
self.assertEqual(newresponse.headers.getlist('Content-Encoding'),
['uuencode'])
def test_process_response_encoding_inside_body(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = Response("http;//www.example.com/",
headers=headers,
body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_force_recalculate_encoding(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = HtmlResponse("http;//www.example.com/page.html",
headers=headers,
body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_gzipped_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.headers['Content-Encoding'], 'gzip')
self.assertEqual(response.headers['Content-Type'], 'application/gzip')
class HttpCompressionTest(TestCase):
def setUp(self):
self.spider = Spider('foo')
self.mw = HttpCompressionMiddleware()
def _getresponse(self, coding):
if coding not in FORMAT:
raise ValueError()
samplefile, contentencoding = FORMAT[coding]
with open(join(SAMPLEDIR, samplefile), 'rb') as sample:
body = sample.read()
headers = {
'Server': 'Yaws/1.49 Yet Another Web Server',
'Date': 'Sun, 08 Mar 2009 00:41:03 GMT',
'Content-Length': len(body),
'Content-Type': 'text/html',
'Content-Encoding': contentencoding,
}
response = Response('http://scrapytest.org/', body=body, headers=headers)
response.request = Request('http://scrapytest.org', headers={'Accept-Encoding': 'gzip, deflate'})
return response
def test_process_request(self):
request = Request('http://scrapytest.org')
assert 'Accept-Encoding' not in request.headers
self.mw.process_request(request, self.spider)
self.assertEqual(request.headers.get('Accept-Encoding'),
b', '.join(ACCEPTED_ENCODINGS))
def test_process_response_gzip(self):
response = self._getresponse('gzip')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'gzip')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_br(self):
try:
import brotli # noqa: F401
except ImportError:
raise SkipTest("no brotli")
response = self._getresponse('br')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'br')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b"<!DOCTYPE")
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_rawdeflate(self):
response = self._getresponse('rawdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_zlibdelate(self):
response = self._getresponse('zlibdeflate')
request = response.request
self.assertEqual(response.headers['Content-Encoding'], b'deflate')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
assert newresponse.body.startswith(b'<!DOCTYPE')
assert 'Content-Encoding' not in newresponse.headers
def test_process_response_plain(self):
response = Response('http://scrapytest.org', body=b'<!DOCTYPE...')
request = Request('http://scrapytest.org')
assert not response.headers.get('Content-Encoding')
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is response
assert newresponse.body.startswith(b'<!DOCTYPE')
def test_multipleencodings(self):
response = self._getresponse('gzip')
response.headers['Content-Encoding'] = ['uuencode', 'gzip']
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
assert newresponse is not response
self.assertEqual(newresponse.headers.getlist('Content-Encoding'), [b'uuencode'])
def test_process_response_encoding_inside_body(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = Response("http;//www.example.com/", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_force_recalculate_encoding(self):
headers = {
'Content-Type': 'text/html',
'Content-Encoding': 'gzip',
}
f = BytesIO()
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
zf = GzipFile(fileobj=f, mode='wb')
zf.write(plainbody)
zf.close()
response = HtmlResponse("http;//www.example.com/page.html", headers=headers, body=f.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, HtmlResponse)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_no_content_type_header(self):
headers = {
'Content-Encoding': 'identity',
}
plainbody = b"""<html><head><title>Some page</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312">"""
respcls = responsetypes.from_args(url="http://www.example.com/index", headers=headers, body=plainbody)
response = respcls("http://www.example.com/index", headers=headers, body=plainbody)
request = Request("http://www.example.com/index")
newresponse = self.mw.process_response(request, response, self.spider)
assert isinstance(newresponse, respcls)
self.assertEqual(newresponse.body, plainbody)
self.assertEqual(newresponse.encoding, resolve_encoding('gb2312'))
def test_process_response_gzipped_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzip_app_octetstream_contenttype(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzip_binary_octetstream_contenttype(self):
response = self._getresponse('x-gzip')
response.headers['Content-Type'] = 'binary/octet-stream'
request = response.request
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIsNot(newresponse, response)
self.assertTrue(newresponse.body.startswith(b'<!DOCTYPE'))
self.assertNotIn('Content-Encoding', newresponse.headers)
def test_process_response_gzipped_gzip_file(self):
"""Test that a gzip Content-Encoded .gz file is gunzipped
only once by the middleware, leaving gunzipping of the file
to upper layers.
"""
headers = {
'Content-Type': 'application/gzip',
'Content-Encoding': 'gzip',
}
# build a gzipped file (here, a sitemap)
f = BytesIO()
plainbody = b"""<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
<url>
<loc>http://www.example.com/</loc>
<lastmod>2009-08-16</lastmod>
<changefreq>daily</changefreq>
<priority>1</priority>
</url>
<url>
<loc>http://www.example.com/Special-Offers.html</loc>
<lastmod>2009-08-16</lastmod>
<changefreq>weekly</changefreq>
<priority>0.8</priority>
</url>
</urlset>"""
gz_file = GzipFile(fileobj=f, mode='wb')
gz_file.write(plainbody)
gz_file.close()
# build a gzipped response body containing this gzipped file
r = BytesIO()
gz_resp = GzipFile(fileobj=r, mode='wb')
gz_resp.write(f.getvalue())
gz_resp.close()
response = Response("http;//www.example.com/", headers=headers, body=r.getvalue())
request = Request("http://www.example.com/")
newresponse = self.mw.process_response(request, response, self.spider)
self.assertEqual(gunzip(newresponse.body), plainbody)
def test_process_response_head_request_no_decode_required(self):
response = self._getresponse('gzip')
response.headers['Content-Type'] = 'application/gzip'
request = response.request
request.method = 'HEAD'
response = response.replace(body=None)
newresponse = self.mw.process_response(request, response, self.spider)
self.assertIs(newresponse, response)
self.assertEqual(response.body, b'')