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import os
from twisted.trial import unittest
from twisted.protocols.policies import WrappingFactory
from twisted.python.filepath import FilePath
from twisted.internet import reactor, defer
from twisted.web import server, static, util, resource
from twisted.web.test.test_webclient import ForeverTakingResource, \
NoLengthResource, HostHeaderResource, \
PayloadResource, BrokenDownloadResource
from scrapy.core.downloader.webclient import PartialDownloadError
from scrapy.core.downloader.handlers.file import download_file
from scrapy.core.downloader.handlers.http import download_http
from scrapy.spider import BaseSpider
from scrapy.http import Request
class FileTestCase(unittest.TestCase):
def setUp(self):
self.tmpname = self.mktemp()
fd = open(self.tmpname + '^', 'w')
fd.write('0123456789')
fd.close()
def test_download(self):
def _test(response):
self.assertEquals(response.url, request.url)
self.assertEquals(response.status, 200)
self.assertEquals(response.body, '0123456789')
request = Request('file://%s' % self.tmpname + '^')
assert request.url.upper().endswith('%5E')
return download_file(request, BaseSpider()).addCallback(_test)
def test_non_existent(self):
request = Request('file://%s' % self.mktemp())
d = download_file(request, BaseSpider())
return self.assertFailure(d, IOError)
class HttpTestCase(unittest.TestCase):
def setUp(self):
name = self.mktemp()
os.mkdir(name)
FilePath(name).child("file").setContent("0123456789")
r = static.File(name)
r.putChild("redirect", util.Redirect("/file"))
r.putChild("wait", ForeverTakingResource())
r.putChild("nolength", NoLengthResource())
r.putChild("host", HostHeaderResource())
r.putChild("payload", PayloadResource())
r.putChild("broken", BrokenDownloadResource())
self.site = server.Site(r, timeout=None)
self.wrapper = WrappingFactory(self.site)
self.port = reactor.listenTCP(0, self.wrapper, interface='127.0.0.1')
self.portno = self.port.getHost().port
def tearDown(self):
return self.port.stopListening()
def getURL(self, path):
return "http://127.0.0.1:%d/%s" % (self.portno, path)
def test_download(self):
request = Request(self.getURL('file'))
d = download_http(request, BaseSpider())
d.addCallback(lambda r: r.body)
d.addCallback(self.assertEquals, "0123456789")
return d
def test_redirect_status(self):
request = Request(self.getURL('redirect'))
d = download_http(request, BaseSpider())
d.addCallback(lambda r: r.status)
d.addCallback(self.assertEquals, 302)
return d
def test_timeout_download_from_spider(self):
spider = BaseSpider()
spider.download_timeout = 0.000001
request = Request(self.getURL('wait'))
d = download_http(request, spider)
return self.assertFailure(d, defer.TimeoutError)
def test_host_header_not_in_request_headers(self):
def _test(response):
self.assertEquals(response.body, '127.0.0.1:%d' % self.portno)
self.assertEquals(request.headers, {})
request = Request(self.getURL('host'))
return download_http(request, BaseSpider()).addCallback(_test)
def test_host_header_seted_in_request_headers(self):
def _test(response):
self.assertEquals(response.body, 'example.com')
self.assertEquals(request.headers.get('Host'), 'example.com')
request = Request(self.getURL('host'), headers={'Host': 'example.com'})
return download_http(request, BaseSpider()).addCallback(_test)
d = download_http(request, BaseSpider())
d.addCallback(lambda r: r.body)
d.addCallback(self.assertEquals, 'example.com')
return d
def test_payload(self):
body = '1'*100 # PayloadResource requires body length to be 100
request = Request(self.getURL('payload'), method='POST', body=body)
d = download_http(request, BaseSpider())
d.addCallback(lambda r: r.body)
d.addCallback(self.assertEquals, body)
return d
def test_broken_download(self):
request = Request(self.getURL('broken'))
d = download_http(request, BaseSpider())
return self.assertFailure(d, PartialDownloadError)
class UriResource(resource.Resource):
"""Return the full uri that was requested"""
def getChild(self, path, request):
return self
def render(self, request):
return request.uri
class HttpProxyTestCase(unittest.TestCase):
def setUp(self):
site = server.Site(UriResource(), timeout=None)
wrapper = WrappingFactory(site)
self.port = reactor.listenTCP(0, wrapper, interface='127.0.0.1')
self.portno = self.port.getHost().port
def tearDown(self):
return self.port.stopListening()
def getURL(self, path):
return "http://127.0.0.1:%d/%s" % (self.portno, path)
def test_download_with_proxy(self):
def _test(response):
self.assertEquals(response.status, 200)
self.assertEquals(response.url, request.url)
self.assertEquals(response.body, 'https://example.com')
http_proxy = self.getURL('')
request = Request('https://example.com', meta={'proxy': http_proxy})
return download_http(request, BaseSpider()).addCallback(_test)
def test_download_without_proxy(self):
def _test(response):
self.assertEquals(response.status, 200)
self.assertEquals(response.url, request.url)
self.assertEquals(response.body, '/path/to/resource')
request = Request(self.getURL('path/to/resource'))
return download_http(request, BaseSpider()).addCallback(_test)
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