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332 lines
9.4 KiB
Python
332 lines
9.4 KiB
Python
import io
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import os
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import unittest
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import urllib.robotparser
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from collections import namedtuple
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from test import support
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from http.server import BaseHTTPRequestHandler, HTTPServer
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try:
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import threading
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except ImportError:
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threading = None
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class BaseRobotTest:
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robots_txt = ''
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agent = 'test_robotparser'
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good = []
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bad = []
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def setUp(self):
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lines = io.StringIO(self.robots_txt).readlines()
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self.parser = urllib.robotparser.RobotFileParser()
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self.parser.parse(lines)
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def get_agent_and_url(self, url):
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if isinstance(url, tuple):
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agent, url = url
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return agent, url
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return self.agent, url
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def test_good_urls(self):
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for url in self.good:
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agent, url = self.get_agent_and_url(url)
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with self.subTest(url=url, agent=agent):
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self.assertTrue(self.parser.can_fetch(agent, url))
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def test_bad_urls(self):
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for url in self.bad:
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agent, url = self.get_agent_and_url(url)
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with self.subTest(url=url, agent=agent):
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self.assertFalse(self.parser.can_fetch(agent, url))
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class UserAgentWildcardTest(BaseRobotTest, unittest.TestCase):
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robots_txt = """\
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User-agent: *
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Disallow: /cyberworld/map/ # This is an infinite virtual URL space
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Disallow: /tmp/ # these will soon disappear
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Disallow: /foo.html
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"""
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good = ['/', '/test.html']
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bad = ['/cyberworld/map/index.html', '/tmp/xxx', '/foo.html']
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class CrawlDelayAndCustomAgentTest(BaseRobotTest, unittest.TestCase):
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robots_txt = """\
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# robots.txt for http://www.example.com/
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User-agent: *
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Crawl-delay: 1
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Request-rate: 3/15
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Disallow: /cyberworld/map/ # This is an infinite virtual URL space
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# Cybermapper knows where to go.
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User-agent: cybermapper
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Disallow:
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"""
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good = ['/', '/test.html', ('cybermapper', '/cyberworld/map/index.html')]
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bad = ['/cyberworld/map/index.html']
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class RejectAllRobotsTest(BaseRobotTest, unittest.TestCase):
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robots_txt = """\
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# go away
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User-agent: *
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Disallow: /
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"""
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good = []
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bad = ['/cyberworld/map/index.html', '/', '/tmp/']
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class BaseRequestRateTest(BaseRobotTest):
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def test_request_rate(self):
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for url in self.good + self.bad:
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agent, url = self.get_agent_and_url(url)
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with self.subTest(url=url, agent=agent):
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if self.crawl_delay:
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self.assertEqual(
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self.parser.crawl_delay(agent), self.crawl_delay
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)
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if self.request_rate:
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self.assertEqual(
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self.parser.request_rate(agent).requests,
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self.request_rate.requests
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)
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self.assertEqual(
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self.parser.request_rate(agent).seconds,
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self.request_rate.seconds
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)
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class CrawlDelayAndRequestRateTest(BaseRequestRateTest, unittest.TestCase):
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robots_txt = """\
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User-agent: figtree
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Crawl-delay: 3
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Request-rate: 9/30
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Disallow: /tmp
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Disallow: /a%3cd.html
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Disallow: /a%2fb.html
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Disallow: /%7ejoe/index.html
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"""
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agent = 'figtree'
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request_rate = namedtuple('req_rate', 'requests seconds')(9, 30)
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crawl_delay = 3
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good = [('figtree', '/foo.html')]
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bad = ['/tmp', '/tmp.html', '/tmp/a.html', '/a%3cd.html', '/a%3Cd.html',
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'/a%2fb.html', '/~joe/index.html']
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class DifferentAgentTest(CrawlDelayAndRequestRateTest):
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agent = 'FigTree Robot libwww-perl/5.04'
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# these are not actually tested, but we still need to parse it
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# in order to accommodate the input parameters
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request_rate = None
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crawl_delay = None
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class InvalidRequestRateTest(BaseRobotTest, unittest.TestCase):
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robots_txt = """\
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User-agent: *
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Disallow: /tmp/
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Disallow: /a%3Cd.html
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Disallow: /a/b.html
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Disallow: /%7ejoe/index.html
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Crawl-delay: 3
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Request-rate: 9/banana
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"""
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good = ['/tmp']
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bad = ['/tmp/', '/tmp/a.html', '/a%3cd.html', '/a%3Cd.html', '/a/b.html',
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'/%7Ejoe/index.html']
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crawl_delay = 3
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class InvalidCrawlDelayTest(BaseRobotTest, unittest.TestCase):
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# From bug report #523041
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robots_txt = """\
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User-Agent: *
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Disallow: /.
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Crawl-delay: pears
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"""
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good = ['/foo.html']
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# bug report says "/" should be denied, but that is not in the RFC
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bad = []
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class AnotherInvalidRequestRateTest(BaseRobotTest, unittest.TestCase):
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# also test that Allow and Diasallow works well with each other
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robots_txt = """\
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User-agent: Googlebot
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Allow: /folder1/myfile.html
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Disallow: /folder1/
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Request-rate: whale/banana
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"""
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agent = 'Googlebot'
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good = ['/folder1/myfile.html']
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bad = ['/folder1/anotherfile.html']
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class UserAgentOrderingTest(BaseRobotTest, unittest.TestCase):
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# the order of User-agent should be correct. note
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# that this file is incorrect because "Googlebot" is a
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# substring of "Googlebot-Mobile"
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robots_txt = """\
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User-agent: Googlebot
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Disallow: /
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User-agent: Googlebot-Mobile
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Allow: /
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"""
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agent = 'Googlebot'
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bad = ['/something.jpg']
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class UserAgentGoogleMobileTest(UserAgentOrderingTest):
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agent = 'Googlebot-Mobile'
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class GoogleURLOrderingTest(BaseRobotTest, unittest.TestCase):
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# Google also got the order wrong. You need
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# to specify the URLs from more specific to more general
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robots_txt = """\
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User-agent: Googlebot
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Allow: /folder1/myfile.html
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Disallow: /folder1/
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"""
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agent = 'googlebot'
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good = ['/folder1/myfile.html']
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bad = ['/folder1/anotherfile.html']
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class DisallowQueryStringTest(BaseRobotTest, unittest.TestCase):
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# see issue #6325 for details
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robots_txt = """\
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User-agent: *
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Disallow: /some/path?name=value
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"""
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good = ['/some/path']
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bad = ['/some/path?name=value']
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class UseFirstUserAgentWildcardTest(BaseRobotTest, unittest.TestCase):
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# obey first * entry (#4108)
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robots_txt = """\
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User-agent: *
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Disallow: /some/path
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User-agent: *
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Disallow: /another/path
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"""
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good = ['/another/path']
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bad = ['/some/path']
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class EmptyQueryStringTest(BaseRobotTest, unittest.TestCase):
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# normalize the URL first (#17403)
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robots_txt = """\
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User-agent: *
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Allow: /some/path?
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Disallow: /another/path?
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"""
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good = ['/some/path?']
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bad = ['/another/path?']
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class DefaultEntryTest(BaseRequestRateTest, unittest.TestCase):
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robots_txt = """\
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User-agent: *
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Crawl-delay: 1
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Request-rate: 3/15
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Disallow: /cyberworld/map/
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"""
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request_rate = namedtuple('req_rate', 'requests seconds')(3, 15)
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crawl_delay = 1
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good = ['/', '/test.html']
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bad = ['/cyberworld/map/index.html']
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class RobotHandler(BaseHTTPRequestHandler):
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def do_GET(self):
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self.send_error(403, "Forbidden access")
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def log_message(self, format, *args):
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pass
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@unittest.skipUnless(threading, 'threading required for this test')
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class PasswordProtectedSiteTestCase(unittest.TestCase):
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def setUp(self):
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self.server = HTTPServer((support.HOST, 0), RobotHandler)
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self.t = threading.Thread(
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name='HTTPServer serving',
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target=self.server.serve_forever,
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# Short poll interval to make the test finish quickly.
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# Time between requests is short enough that we won't wake
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# up spuriously too many times.
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kwargs={'poll_interval':0.01})
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self.t.daemon = True # In case this function raises.
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self.t.start()
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def tearDown(self):
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self.server.shutdown()
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self.t.join()
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self.server.server_close()
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@support.reap_threads
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def testPasswordProtectedSite(self):
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addr = self.server.server_address
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url = 'http://' + support.HOST + ':' + str(addr[1])
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robots_url = url + "/robots.txt"
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parser = urllib.robotparser.RobotFileParser()
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parser.set_url(url)
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parser.read()
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self.assertFalse(parser.can_fetch("*", robots_url))
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class NetworkTestCase(unittest.TestCase):
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base_url = 'http://www.pythontest.net/'
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robots_txt = '{}elsewhere/robots.txt'.format(base_url)
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@classmethod
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def setUpClass(cls):
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support.requires('network')
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with support.transient_internet(cls.base_url):
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cls.parser = urllib.robotparser.RobotFileParser(cls.robots_txt)
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cls.parser.read()
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def url(self, path):
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return '{}{}{}'.format(
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self.base_url, path, '/' if not os.path.splitext(path)[1] else ''
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)
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def test_basic(self):
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self.assertFalse(self.parser.disallow_all)
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self.assertFalse(self.parser.allow_all)
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self.assertGreater(self.parser.mtime(), 0)
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self.assertFalse(self.parser.crawl_delay('*'))
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self.assertFalse(self.parser.request_rate('*'))
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def test_can_fetch(self):
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self.assertTrue(self.parser.can_fetch('*', self.url('elsewhere')))
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self.assertFalse(self.parser.can_fetch('Nutch', self.base_url))
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self.assertFalse(self.parser.can_fetch('Nutch', self.url('brian')))
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self.assertFalse(self.parser.can_fetch('Nutch', self.url('webstats')))
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self.assertFalse(self.parser.can_fetch('*', self.url('webstats')))
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self.assertTrue(self.parser.can_fetch('*', self.base_url))
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def test_read_404(self):
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parser = urllib.robotparser.RobotFileParser(self.url('i-robot.txt'))
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parser.read()
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self.assertTrue(parser.allow_all)
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self.assertFalse(parser.disallow_all)
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self.assertEqual(parser.mtime(), 0)
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self.assertIsNone(parser.crawl_delay('*'))
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self.assertIsNone(parser.request_rate('*'))
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if __name__=='__main__':
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unittest.main()
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