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# coding=utf-8
from twisted.trial import unittest
def reppy_available():
# check if reppy parser is installed
try:
from reppy.robots import Robots # noqa: F401
except ImportError:
return False
return True
def rerp_available():
# check if robotexclusionrulesparser is installed
try:
from robotexclusionrulesparser import RobotExclusionRulesParser # noqa: F401
except ImportError:
return False
return True
def protego_available():
# check if protego parser is installed
try:
from protego import Protego # noqa: F401
except ImportError:
return False
return True
class BaseRobotParserTest:
def _setUp(self, parser_cls):
self.parser_cls = parser_cls
def test_allowed(self):
robotstxt_robotstxt_body = ("User-agent: * \n"
"Disallow: /disallowed \n"
"Allow: /allowed \n"
"Crawl-delay: 10".encode('utf-8'))
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertTrue(rp.allowed("https://www.site.local/allowed", "*"))
self.assertFalse(rp.allowed("https://www.site.local/disallowed", "*"))
def test_allowed_wildcards(self):
robotstxt_robotstxt_body = """User-agent: first
Disallow: /disallowed/*/end$
User-agent: second
Allow: /*allowed
Disallow: /
""".encode('utf-8')
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertTrue(rp.allowed("https://www.site.local/disallowed", "first"))
self.assertFalse(rp.allowed("https://www.site.local/disallowed/xyz/end", "first"))
self.assertFalse(rp.allowed("https://www.site.local/disallowed/abc/end", "first"))
self.assertTrue(rp.allowed("https://www.site.local/disallowed/xyz/endinglater", "first"))
self.assertTrue(rp.allowed("https://www.site.local/allowed", "second"))
self.assertTrue(rp.allowed("https://www.site.local/is_still_allowed", "second"))
self.assertTrue(rp.allowed("https://www.site.local/is_allowed_too", "second"))
def test_length_based_precedence(self):
robotstxt_robotstxt_body = ("User-agent: * \n"
"Disallow: / \n"
"Allow: /page".encode('utf-8'))
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertTrue(rp.allowed("https://www.site.local/page", "*"))
def test_order_based_precedence(self):
robotstxt_robotstxt_body = ("User-agent: * \n"
"Disallow: / \n"
"Allow: /page".encode('utf-8'))
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertFalse(rp.allowed("https://www.site.local/page", "*"))
def test_empty_response(self):
"""empty response should equal 'allow all'"""
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=b'')
self.assertTrue(rp.allowed("https://site.local/", "*"))
self.assertTrue(rp.allowed("https://site.local/", "chrome"))
self.assertTrue(rp.allowed("https://site.local/index.html", "*"))
self.assertTrue(rp.allowed("https://site.local/disallowed", "*"))
def test_garbage_response(self):
"""garbage response should be discarded, equal 'allow all'"""
robotstxt_robotstxt_body = b'GIF89a\xd3\x00\xfe\x00\xa2'
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertTrue(rp.allowed("https://site.local/", "*"))
self.assertTrue(rp.allowed("https://site.local/", "chrome"))
self.assertTrue(rp.allowed("https://site.local/index.html", "*"))
self.assertTrue(rp.allowed("https://site.local/disallowed", "*"))
def test_unicode_url_and_useragent(self):
robotstxt_robotstxt_body = """
User-Agent: *
Disallow: /admin/
Disallow: /static/
# taken from https://en.wikipedia.org/robots.txt
Disallow: /wiki/K%C3%A4ytt%C3%A4j%C3%A4:
Disallow: /wiki/Käyttäjä:
User-Agent: UnicödeBöt
Disallow: /some/randome/page.html""".encode('utf-8')
rp = self.parser_cls.from_crawler(crawler=None, robotstxt_body=robotstxt_robotstxt_body)
self.assertTrue(rp.allowed("https://site.local/", "*"))
self.assertFalse(rp.allowed("https://site.local/admin/", "*"))
self.assertFalse(rp.allowed("https://site.local/static/", "*"))
self.assertTrue(rp.allowed("https://site.local/admin/", "UnicödeBöt"))
self.assertFalse(rp.allowed("https://site.local/wiki/K%C3%A4ytt%C3%A4j%C3%A4:", "*"))
self.assertFalse(rp.allowed("https://site.local/wiki/Käyttäjä:", "*"))
self.assertTrue(rp.allowed("https://site.local/some/randome/page.html", "*"))
self.assertFalse(rp.allowed("https://site.local/some/randome/page.html", "UnicödeBöt"))
class PythonRobotParserTest(BaseRobotParserTest, unittest.TestCase):
def setUp(self):
from scrapy.robotstxt import PythonRobotParser
super()._setUp(PythonRobotParser)
def test_length_based_precedence(self):
raise unittest.SkipTest("RobotFileParser does not support length based directives precedence.")
def test_allowed_wildcards(self):
raise unittest.SkipTest("RobotFileParser does not support wildcards.")
class ReppyRobotParserTest(BaseRobotParserTest, unittest.TestCase):
if not reppy_available():
skip = "Reppy parser is not installed"
def setUp(self):
from scrapy.robotstxt import ReppyRobotParser
super()._setUp(ReppyRobotParser)
def test_order_based_precedence(self):
raise unittest.SkipTest("Reppy does not support order based directives precedence.")
class RerpRobotParserTest(BaseRobotParserTest, unittest.TestCase):
if not rerp_available():
skip = "Rerp parser is not installed"
def setUp(self):
from scrapy.robotstxt import RerpRobotParser
super()._setUp(RerpRobotParser)
def test_length_based_precedence(self):
raise unittest.SkipTest("Rerp does not support length based directives precedence.")
class ProtegoRobotParserTest(BaseRobotParserTest, unittest.TestCase):
if not protego_available():
skip = "Protego parser is not installed"
def setUp(self):
from scrapy.robotstxt import ProtegoRobotParser
super()._setUp(ProtegoRobotParser)
def test_order_based_precedence(self):
raise unittest.SkipTest("Protego does not support order based directives precedence.")
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