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b3ee6f9921
Invoke the standard error handlers for non-200 responses. Always supply a "Connection: close" header to prevent the server from leaving the connection open. Downstream users of the socket may attempt recv()/read() with no arguments, which would block if the connection were kept open.
631 lines
24 KiB
Python
631 lines
24 KiB
Python
import unittest
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from test import test_support
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import os
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import StringIO
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import urllib2
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from urllib2 import Request, OpenerDirector
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# XXX
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# Request
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# CacheFTPHandler (hard to write)
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# parse_keqv_list, parse_http_list (I'm leaving this for Anthony Baxter
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# and Greg Stein, since they're doing Digest Authentication)
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# Authentication stuff (ditto)
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# ProxyHandler, CustomProxy, CustomProxyHandler (I don't use a proxy)
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# GopherHandler (haven't used gopher for a decade or so...)
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class TrivialTests(unittest.TestCase):
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def test_trivial(self):
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# A couple trivial tests
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self.assertRaises(ValueError, urllib2.urlopen, 'bogus url')
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# XXX Name hacking to get this to work on Windows.
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fname = os.path.abspath(urllib2.__file__).replace('\\', '/')
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if fname[1:2] == ":":
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fname = fname[2:]
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# And more hacking to get it to work on MacOS. This assumes
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# urllib.pathname2url works, unfortunately...
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if os.name == 'mac':
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fname = '/' + fname.replace(':', '/')
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elif os.name == 'riscos':
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import string
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fname = os.expand(fname)
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fname = fname.translate(string.maketrans("/.", "./"))
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file_url = "file://%s" % fname
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f = urllib2.urlopen(file_url)
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buf = f.read()
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f.close()
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class MockOpener:
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addheaders = []
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def open(self, req, data=None):
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self.req, self.data = req, data
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def error(self, proto, *args):
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self.proto, self.args = proto, args
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class MockFile:
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def read(self, count=None): pass
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def readline(self, count=None): pass
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def close(self): pass
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class MockResponse(StringIO.StringIO):
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def __init__(self, code, msg, headers, data, url=None):
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StringIO.StringIO.__init__(self, data)
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self.code, self.msg, self.headers, self.url = code, msg, headers, url
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def info(self):
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return self.headers
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def geturl(self):
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return self.url
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class FakeMethod:
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def __init__(self, meth_name, action, handle):
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self.meth_name = meth_name
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self.handle = handle
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self.action = action
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def __call__(self, *args):
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return self.handle(self.meth_name, self.action, *args)
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class MockHandler:
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def __init__(self, methods):
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self._define_methods(methods)
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def _define_methods(self, methods):
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for spec in methods:
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if len(spec) == 2: name, action = spec
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else: name, action = spec, None
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meth = FakeMethod(name, action, self.handle)
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setattr(self.__class__, name, meth)
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def handle(self, fn_name, action, *args, **kwds):
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self.parent.calls.append((self, fn_name, args, kwds))
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if action is None:
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return None
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elif action == "return self":
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return self
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elif action == "return response":
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res = MockResponse(200, "OK", {}, "")
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return res
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elif action == "return request":
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return Request("http://blah/")
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elif action.startswith("error"):
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code = action[action.rfind(" ")+1:]
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try:
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code = int(code)
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except ValueError:
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pass
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res = MockResponse(200, "OK", {}, "")
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return self.parent.error("http", args[0], res, code, "", {})
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elif action == "raise":
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raise urllib2.URLError("blah")
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assert False
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def close(self): pass
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def add_parent(self, parent):
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self.parent = parent
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self.parent.calls = []
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def __lt__(self, other):
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if not hasattr(other, "handler_order"):
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# No handler_order, leave in original order. Yuck.
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return True
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return self.handler_order < other.handler_order
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def add_ordered_mock_handlers(opener, meth_spec):
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"""Create MockHandlers and add them to an OpenerDirector.
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meth_spec: list of lists of tuples and strings defining methods to define
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on handlers. eg:
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[["http_error", "ftp_open"], ["http_open"]]
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defines methods .http_error() and .ftp_open() on one handler, and
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.http_open() on another. These methods just record their arguments and
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return None. Using a tuple instead of a string causes the method to
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perform some action (see MockHandler.handle()), eg:
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[["http_error"], [("http_open", "return request")]]
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defines .http_error() on one handler (which simply returns None), and
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.http_open() on another handler, which returns a Request object.
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"""
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handlers = []
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count = 0
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for meths in meth_spec:
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class MockHandlerSubclass(MockHandler): pass
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h = MockHandlerSubclass(meths)
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h.handler_order = count
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h.add_parent(opener)
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count = count + 1
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handlers.append(h)
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opener.add_handler(h)
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return handlers
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class OpenerDirectorTests(unittest.TestCase):
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def test_handled(self):
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# handler returning non-None means no more handlers will be called
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o = OpenerDirector()
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meth_spec = [
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["http_open", "ftp_open", "http_error_302"],
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["ftp_open"],
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[("http_open", "return self")],
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[("http_open", "return self")],
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]
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handlers = add_ordered_mock_handlers(o, meth_spec)
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req = Request("http://example.com/")
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r = o.open(req)
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# Second .http_open() gets called, third doesn't, since second returned
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# non-None. Handlers without .http_open() never get any methods called
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# on them.
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# In fact, second mock handler defining .http_open() returns self
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# (instead of response), which becomes the OpenerDirector's return
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# value.
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self.assertEqual(r, handlers[2])
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calls = [(handlers[0], "http_open"), (handlers[2], "http_open")]
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for expected, got in zip(calls, o.calls):
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handler, name, args, kwds = got
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self.assertEqual((handler, name), expected)
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self.assertEqual(args, (req,))
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def test_handler_order(self):
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o = OpenerDirector()
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handlers = []
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for meths, handler_order in [
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([("http_open", "return self")], 500),
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(["http_open"], 0),
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]:
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class MockHandlerSubclass(MockHandler): pass
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h = MockHandlerSubclass(meths)
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h.handler_order = handler_order
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handlers.append(h)
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o.add_handler(h)
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r = o.open("http://example.com/")
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# handlers called in reverse order, thanks to their sort order
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self.assertEqual(o.calls[0][0], handlers[1])
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self.assertEqual(o.calls[1][0], handlers[0])
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def test_raise(self):
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# raising URLError stops processing of request
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o = OpenerDirector()
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meth_spec = [
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[("http_open", "raise")],
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[("http_open", "return self")],
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]
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handlers = add_ordered_mock_handlers(o, meth_spec)
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req = Request("http://example.com/")
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self.assertRaises(urllib2.URLError, o.open, req)
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self.assertEqual(o.calls, [(handlers[0], "http_open", (req,), {})])
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## def test_error(self):
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## # XXX this doesn't actually seem to be used in standard library,
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## # but should really be tested anyway...
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def test_http_error(self):
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# XXX http_error_default
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# http errors are a special case
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o = OpenerDirector()
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meth_spec = [
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[("http_open", "error 302")],
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[("http_error_400", "raise"), "http_open"],
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[("http_error_302", "return response"), "http_error_303",
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"http_error"],
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[("http_error_302")],
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]
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handlers = add_ordered_mock_handlers(o, meth_spec)
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class Unknown:
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def __eq__(self, other): return True
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req = Request("http://example.com/")
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r = o.open(req)
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assert len(o.calls) == 2
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calls = [(handlers[0], "http_open", (req,)),
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(handlers[2], "http_error_302",
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(req, Unknown(), 302, "", {}))]
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for expected, got in zip(calls, o.calls):
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handler, method_name, args = expected
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self.assertEqual((handler, method_name), got[:2])
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self.assertEqual(args, got[2])
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def test_processors(self):
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# *_request / *_response methods get called appropriately
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o = OpenerDirector()
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meth_spec = [
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[("http_request", "return request"),
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("http_response", "return response")],
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[("http_request", "return request"),
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("http_response", "return response")],
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]
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handlers = add_ordered_mock_handlers(o, meth_spec)
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req = Request("http://example.com/")
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r = o.open(req)
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# processor methods are called on *all* handlers that define them,
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# not just the first handler that handles the request
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calls = [
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(handlers[0], "http_request"), (handlers[1], "http_request"),
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(handlers[0], "http_response"), (handlers[1], "http_response")]
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for i, (handler, name, args, kwds) in enumerate(o.calls):
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if i < 2:
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# *_request
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self.assertEqual((handler, name), calls[i])
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self.assertEqual(len(args), 1)
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self.assert_(isinstance(args[0], Request))
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else:
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# *_response
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self.assertEqual((handler, name), calls[i])
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self.assertEqual(len(args), 2)
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self.assert_(isinstance(args[0], Request))
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# response from opener.open is None, because there's no
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# handler that defines http_open to handle it
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self.assert_(args[1] is None or
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isinstance(args[1], MockResponse))
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def sanepathname2url(path):
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import urllib
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urlpath = urllib.pathname2url(path)
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if os.name == "nt" and urlpath.startswith("///"):
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urlpath = urlpath[2:]
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# XXX don't ask me about the mac...
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return urlpath
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class HandlerTests(unittest.TestCase):
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def test_ftp(self):
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class MockFTPWrapper:
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def __init__(self, data): self.data = data
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def retrfile(self, filename, filetype):
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self.filename, self.filetype = filename, filetype
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return StringIO.StringIO(self.data), len(self.data)
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class NullFTPHandler(urllib2.FTPHandler):
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def __init__(self, data): self.data = data
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def connect_ftp(self, user, passwd, host, port, dirs):
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self.user, self.passwd = user, passwd
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self.host, self.port = host, port
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self.dirs = dirs
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self.ftpwrapper = MockFTPWrapper(self.data)
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return self.ftpwrapper
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import ftplib, socket
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data = "rheum rhaponicum"
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h = NullFTPHandler(data)
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o = h.parent = MockOpener()
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for url, host, port, type_, dirs, filename, mimetype in [
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("ftp://localhost/foo/bar/baz.html",
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"localhost", ftplib.FTP_PORT, "I",
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["foo", "bar"], "baz.html", "text/html"),
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# XXXX Bug: FTPHandler tries to gethostbyname "localhost:80", with the
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# port still there.
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## ("ftp://localhost:80/foo/bar/",
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## "localhost", 80, "D",
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## ["foo", "bar"], "", None),
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# XXXX bug: second use of splitattr() in FTPHandler should be splitvalue()
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## ("ftp://localhost/baz.gif;type=a",
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## "localhost", ftplib.FTP_PORT, "A",
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## [], "baz.gif", "image/gif"),
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]:
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r = h.ftp_open(Request(url))
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# ftp authentication not yet implemented by FTPHandler
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self.assert_(h.user == h.passwd == "")
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self.assertEqual(h.host, socket.gethostbyname(host))
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self.assertEqual(h.port, port)
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self.assertEqual(h.dirs, dirs)
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self.assertEqual(h.ftpwrapper.filename, filename)
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self.assertEqual(h.ftpwrapper.filetype, type_)
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headers = r.info()
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self.assertEqual(headers["Content-type"], mimetype)
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self.assertEqual(int(headers["Content-length"]), len(data))
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def test_file(self):
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import time, rfc822, socket
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h = urllib2.FileHandler()
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o = h.parent = MockOpener()
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TESTFN = test_support.TESTFN
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urlpath = sanepathname2url(os.path.abspath(TESTFN))
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towrite = "hello, world\n"
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for url in [
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"file://localhost%s" % urlpath,
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"file://%s" % urlpath,
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"file://%s%s" % (socket.gethostbyname('localhost'), urlpath),
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"file://%s%s" % (socket.gethostbyname(socket.gethostname()),
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urlpath),
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]:
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f = open(TESTFN, "wb")
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try:
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try:
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f.write(towrite)
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finally:
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f.close()
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r = h.file_open(Request(url))
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try:
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data = r.read()
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headers = r.info()
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newurl = r.geturl()
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finally:
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r.close()
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stats = os.stat(TESTFN)
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modified = rfc822.formatdate(stats.st_mtime)
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finally:
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os.remove(TESTFN)
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self.assertEqual(data, towrite)
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self.assertEqual(headers["Content-type"], "text/plain")
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self.assertEqual(headers["Content-length"], "13")
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self.assertEqual(headers["Last-modified"], modified)
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for url in [
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"file://localhost:80%s" % urlpath,
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# XXXX bug: these fail with socket.gaierror, should be URLError
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## "file://%s:80%s/%s" % (socket.gethostbyname('localhost'),
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## os.getcwd(), TESTFN),
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## "file://somerandomhost.ontheinternet.com%s/%s" %
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## (os.getcwd(), TESTFN),
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]:
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try:
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f = open(TESTFN, "wb")
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try:
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f.write(towrite)
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finally:
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f.close()
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self.assertRaises(urllib2.URLError,
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h.file_open, Request(url))
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finally:
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os.remove(TESTFN)
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h = urllib2.FileHandler()
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o = h.parent = MockOpener()
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# XXXX why does // mean ftp (and /// mean not ftp!), and where
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# is file: scheme specified? I think this is really a bug, and
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# what was intended was to distinguish between URLs like:
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# file:/blah.txt (a file)
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# file://localhost/blah.txt (a file)
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# file:///blah.txt (a file)
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# file://ftp.example.com/blah.txt (an ftp URL)
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for url, ftp in [
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("file://ftp.example.com//foo.txt", True),
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("file://ftp.example.com///foo.txt", False),
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# XXXX bug: fails with OSError, should be URLError
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("file://ftp.example.com/foo.txt", False),
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]:
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req = Request(url)
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try:
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h.file_open(req)
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# XXXX remove OSError when bug fixed
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except (urllib2.URLError, OSError):
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self.assert_(not ftp)
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else:
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self.assert_(o.req is req)
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self.assertEqual(req.type, "ftp")
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def test_http(self):
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class MockHTTPResponse:
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def __init__(self, fp, msg, status, reason):
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self.fp = fp
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self.msg = msg
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self.status = status
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self.reason = reason
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class MockHTTPClass:
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def __init__(self):
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self.req_headers = []
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self.data = None
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self.raise_on_endheaders = False
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def __call__(self, host):
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self.host = host
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return self
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def set_debuglevel(self, level):
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self.level = level
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def request(self, method, url, body=None, headers={}):
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self.method = method
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self.selector = url
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self.req_headers += headers.items()
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if body:
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self.data = body
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if self.raise_on_endheaders:
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import socket
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raise socket.error()
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def getresponse(self):
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return MockHTTPResponse(MockFile(), {}, 200, "OK")
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h = urllib2.AbstractHTTPHandler()
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o = h.parent = MockOpener()
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url = "http://example.com/"
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for method, data in [("GET", None), ("POST", "blah")]:
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req = Request(url, data, {"Foo": "bar"})
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req.add_unredirected_header("Spam", "eggs")
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http = MockHTTPClass()
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r = h.do_open(http, req)
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# result attributes
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r.read; r.readline # wrapped MockFile methods
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r.info; r.geturl # addinfourl methods
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r.code, r.msg == 200, "OK" # added from MockHTTPClass.getreply()
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hdrs = r.info()
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hdrs.get; hdrs.has_key # r.info() gives dict from .getreply()
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self.assertEqual(r.geturl(), url)
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self.assertEqual(http.host, "example.com")
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self.assertEqual(http.level, 0)
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self.assertEqual(http.method, method)
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self.assertEqual(http.selector, "/")
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self.assertEqual(http.req_headers,
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[("Connection", "close"),
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("Foo", "bar"), ("Spam", "eggs")])
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self.assertEqual(http.data, data)
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# check socket.error converted to URLError
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http.raise_on_endheaders = True
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self.assertRaises(urllib2.URLError, h.do_open, http, req)
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# check adding of standard headers
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o.addheaders = [("Spam", "eggs")]
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for data in "", None: # POST, GET
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req = Request("http://example.com/", data)
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r = MockResponse(200, "OK", {}, "")
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newreq = h.do_request(req)
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if data is None: # GET
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self.assert_("Content-length" not in req.unredirected_hdrs)
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self.assert_("Content-type" not in req.unredirected_hdrs)
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else: # POST
|
|
self.assertEqual(req.unredirected_hdrs["Content-length"], "0")
|
|
self.assertEqual(req.unredirected_hdrs["Content-type"],
|
|
"application/x-www-form-urlencoded")
|
|
# XXX the details of Host could be better tested
|
|
self.assertEqual(req.unredirected_hdrs["Host"], "example.com")
|
|
self.assertEqual(req.unredirected_hdrs["Spam"], "eggs")
|
|
|
|
# don't clobber existing headers
|
|
req.add_unredirected_header("Content-length", "foo")
|
|
req.add_unredirected_header("Content-type", "bar")
|
|
req.add_unredirected_header("Host", "baz")
|
|
req.add_unredirected_header("Spam", "foo")
|
|
newreq = h.do_request(req)
|
|
self.assertEqual(req.unredirected_hdrs["Content-length"], "foo")
|
|
self.assertEqual(req.unredirected_hdrs["Content-type"], "bar")
|
|
self.assertEqual(req.unredirected_hdrs["Host"], "baz")
|
|
self.assertEqual(req.unredirected_hdrs["Spam"], "foo")
|
|
|
|
def test_errors(self):
|
|
h = urllib2.HTTPErrorProcessor()
|
|
o = h.parent = MockOpener()
|
|
|
|
url = "http://example.com/"
|
|
req = Request(url)
|
|
# 200 OK is passed through
|
|
r = MockResponse(200, "OK", {}, "", url)
|
|
newr = h.http_response(req, r)
|
|
self.assert_(r is newr)
|
|
self.assert_(not hasattr(o, "proto")) # o.error not called
|
|
# anything else calls o.error (and MockOpener returns None, here)
|
|
r = MockResponse(201, "Created", {}, "", url)
|
|
self.assert_(h.http_response(req, r) is None)
|
|
self.assertEqual(o.proto, "http") # o.error called
|
|
self.assertEqual(o.args, (req, r, 201, "Created", {}))
|
|
|
|
def test_redirect(self):
|
|
from_url = "http://example.com/a.html"
|
|
to_url = "http://example.com/b.html"
|
|
h = urllib2.HTTPRedirectHandler()
|
|
o = h.parent = MockOpener()
|
|
|
|
# ordinary redirect behaviour
|
|
for code in 301, 302, 303, 307:
|
|
for data in None, "blah\nblah\n":
|
|
method = getattr(h, "http_error_%s" % code)
|
|
req = Request(from_url, data)
|
|
req.add_header("Nonsense", "viking=withhold")
|
|
req.add_unredirected_header("Spam", "spam")
|
|
try:
|
|
method(req, MockFile(), code, "Blah", {"location": to_url})
|
|
except urllib2.HTTPError:
|
|
# 307 in response to POST requires user OK
|
|
self.assert_(code == 307 and data is not None)
|
|
self.assertEqual(o.req.get_full_url(), to_url)
|
|
try:
|
|
self.assertEqual(o.req.get_method(), "GET")
|
|
except AttributeError:
|
|
self.assert_(not o.req.has_data())
|
|
self.assertEqual(o.req.headers["Nonsense"],
|
|
"viking=withhold")
|
|
self.assert_("Spam" not in o.req.headers)
|
|
self.assert_("Spam" not in o.req.unredirected_hdrs)
|
|
|
|
# loop detection
|
|
req = Request(from_url)
|
|
req.origin_req_host = "example.com"
|
|
def redirect(h, req, code, url=to_url):
|
|
method = getattr(h, "http_error_%s" % code)
|
|
method(req, MockFile(), code, "Blah", {"location": url})
|
|
# Note that the *original* request shares the same record of
|
|
# redirections with the sub-requests caused by the redirections.
|
|
# once
|
|
redirect(h, req, 302)
|
|
# twice: loop detected
|
|
self.assertRaises(urllib2.HTTPError, redirect, h, req, 302)
|
|
# and again
|
|
self.assertRaises(urllib2.HTTPError, redirect, h, req, 302)
|
|
# but this is a different redirect code, so OK...
|
|
redirect(h, req, 301)
|
|
self.assertRaises(urllib2.HTTPError, redirect, h, req, 301)
|
|
# order doesn't matter
|
|
redirect(h, req, 303)
|
|
redirect(h, req, 307)
|
|
self.assertRaises(urllib2.HTTPError, redirect, h, req, 303)
|
|
|
|
# detect endless non-repeating chain of redirects
|
|
req = Request(from_url)
|
|
req.origin_req_host = "example.com"
|
|
count = 0
|
|
try:
|
|
while 1:
|
|
redirect(h, req, 302, "http://example.com/%d" % count)
|
|
count = count + 1
|
|
except urllib2.HTTPError:
|
|
self.assertEqual(count,
|
|
urllib2.HTTPRedirectHandler.max_redirections)
|
|
|
|
|
|
class MiscTests(unittest.TestCase):
|
|
|
|
def test_build_opener(self):
|
|
class MyHTTPHandler(urllib2.HTTPHandler): pass
|
|
class FooHandler(urllib2.BaseHandler):
|
|
def foo_open(self): pass
|
|
class BarHandler(urllib2.BaseHandler):
|
|
def bar_open(self): pass
|
|
|
|
build_opener = urllib2.build_opener
|
|
|
|
o = build_opener(FooHandler, BarHandler)
|
|
self.opener_has_handler(o, FooHandler)
|
|
self.opener_has_handler(o, BarHandler)
|
|
|
|
# can take a mix of classes and instances
|
|
o = build_opener(FooHandler, BarHandler())
|
|
self.opener_has_handler(o, FooHandler)
|
|
self.opener_has_handler(o, BarHandler)
|
|
|
|
# subclasses of default handlers override default handlers
|
|
o = build_opener(MyHTTPHandler)
|
|
self.opener_has_handler(o, MyHTTPHandler)
|
|
|
|
# a particular case of overriding: default handlers can be passed
|
|
# in explicitly
|
|
o = build_opener()
|
|
self.opener_has_handler(o, urllib2.HTTPHandler)
|
|
o = build_opener(urllib2.HTTPHandler)
|
|
self.opener_has_handler(o, urllib2.HTTPHandler)
|
|
o = build_opener(urllib2.HTTPHandler())
|
|
self.opener_has_handler(o, urllib2.HTTPHandler)
|
|
|
|
def opener_has_handler(self, opener, handler_class):
|
|
for h in opener.handlers:
|
|
if h.__class__ == handler_class:
|
|
break
|
|
else:
|
|
self.assert_(False)
|
|
|
|
|
|
def test_main(verbose=None):
|
|
from test import test_sets
|
|
test_support.run_unittest(
|
|
TrivialTests,
|
|
OpenerDirectorTests,
|
|
HandlerTests,
|
|
MiscTests,
|
|
)
|
|
|
|
if __name__ == "__main__":
|
|
test_main(verbose=True)
|