import unittest from test import test_support import os, socket import StringIO import urllib2 from urllib2 import Request, OpenerDirector # XXX # Request # CacheFTPHandler (hard to write) # parse_keqv_list, parse_http_list, HTTPDigestAuthHandler class TrivialTests(unittest.TestCase): def test_trivial(self): # A couple trivial tests self.assertRaises(ValueError, urllib2.urlopen, 'bogus url') # XXX Name hacking to get this to work on Windows. fname = os.path.abspath(urllib2.__file__).replace('\\', '/') if fname[1:2] == ":": fname = fname[2:] # And more hacking to get it to work on MacOS. This assumes # urllib.pathname2url works, unfortunately... if os.name == 'mac': fname = '/' + fname.replace(':', '/') elif os.name == 'riscos': import string fname = os.expand(fname) fname = fname.translate(string.maketrans("/.", "./")) file_url = "file://%s" % fname f = urllib2.urlopen(file_url) buf = f.read() f.close() def test_parse_http_list(self): tests = [('a,b,c', ['a', 'b', 'c']), ('path"o,l"og"i"cal, example', ['path"o,l"og"i"cal', 'example']), ('a, b, "c", "d", "e,f", g, h', ['a', 'b', '"c"', '"d"', '"e,f"', 'g', 'h']), ('a="b\\"c", d="e\\,f", g="h\\\\i"', ['a="b"c"', 'd="e,f"', 'g="h\\i"'])] for string, list in tests: self.assertEquals(urllib2.parse_http_list(string), list) def test_request_headers_dict(): """ The Request.headers dictionary is not a documented interface. It should stay that way, because the complete set of headers are only accessible through the .get_header(), .has_header(), .header_items() interface. However, .headers pre-dates those methods, and so real code will be using the dictionary. The introduction in 2.4 of those methods was a mistake for the same reason: code that previously saw all (urllib2 user)-provided headers in .headers now sees only a subset (and the function interface is ugly and incomplete). A better change would have been to replace .headers dict with a dict subclass (or UserDict.DictMixin instance?) that preserved the .headers interface and also provided access to the "unredirected" headers. It's probably too late to fix that, though. Check .capitalize() case normalization: >>> url = "http://example.com" >>> Request(url, headers={"Spam-eggs": "blah"}).headers["Spam-eggs"] 'blah' >>> Request(url, headers={"spam-EggS": "blah"}).headers["Spam-eggs"] 'blah' Currently, Request(url, "Spam-eggs").headers["Spam-Eggs"] raises KeyError, but that could be changed in future. """ def test_request_headers_methods(): """ Note the case normalization of header names here, to .capitalize()-case. This should be preserved for backwards-compatibility. (In the HTTP case, normalization to .title()-case is done by urllib2 before sending headers to httplib). >>> url = "http://example.com" >>> r = Request(url, headers={"Spam-eggs": "blah"}) >>> r.has_header("Spam-eggs") True >>> r.header_items() [('Spam-eggs', 'blah')] >>> r.add_header("Foo-Bar", "baz") >>> items = sorted(r.header_items()) >>> items [('Foo-bar', 'baz'), ('Spam-eggs', 'blah')] Note that e.g. r.has_header("spam-EggS") is currently False, and r.get_header("spam-EggS") returns None, but that could be changed in future. >>> r.has_header("Not-there") False >>> print(r.get_header("Not-there")) None >>> r.get_header("Not-there", "default") 'default' """ def test_password_manager(self): """ >>> mgr = urllib2.HTTPPasswordMgr() >>> add = mgr.add_password >>> add("Some Realm", "http://example.com/", "joe", "password") >>> add("Some Realm", "http://example.com/ni", "ni", "ni") >>> add("c", "http://example.com/foo", "foo", "ni") >>> add("c", "http://example.com/bar", "bar", "nini") >>> add("b", "http://example.com/", "first", "blah") >>> add("b", "http://example.com/", "second", "spam") >>> add("a", "http://example.com", "1", "a") >>> add("Some Realm", "http://c.example.com:3128", "3", "c") >>> add("Some Realm", "d.example.com", "4", "d") >>> add("Some Realm", "e.example.com:3128", "5", "e") >>> mgr.find_user_password("Some Realm", "example.com") ('joe', 'password') >>> mgr.find_user_password("Some Realm", "http://example.com") ('joe', 'password') >>> mgr.find_user_password("Some Realm", "http://example.com/") ('joe', 'password') >>> mgr.find_user_password("Some Realm", "http://example.com/spam") ('joe', 'password') >>> mgr.find_user_password("Some Realm", "http://example.com/spam/spam") ('joe', 'password') >>> mgr.find_user_password("c", "http://example.com/foo") ('foo', 'ni') >>> mgr.find_user_password("c", "http://example.com/bar") ('bar', 'nini') Actually, this is really undefined ATM ## Currently, we use the highest-level path where more than one match: ## >>> mgr.find_user_password("Some Realm", "http://example.com/ni") ## ('joe', 'password') Use latest add_password() in case of conflict: >>> mgr.find_user_password("b", "http://example.com/") ('second', 'spam') No special relationship between a.example.com and example.com: >>> mgr.find_user_password("a", "http://example.com/") ('1', 'a') >>> mgr.find_user_password("a", "http://a.example.com/") (None, None) Ports: >>> mgr.find_user_password("Some Realm", "c.example.com") (None, None) >>> mgr.find_user_password("Some Realm", "c.example.com:3128") ('3', 'c') >>> mgr.find_user_password("Some Realm", "http://c.example.com:3128") ('3', 'c') >>> mgr.find_user_password("Some Realm", "d.example.com") ('4', 'd') >>> mgr.find_user_password("Some Realm", "e.example.com:3128") ('5', 'e') """ pass def test_password_manager_default_port(self): """ >>> mgr = urllib2.HTTPPasswordMgr() >>> add = mgr.add_password The point to note here is that we can't guess the default port if there's no scheme. This applies to both add_password and find_user_password. >>> add("f", "http://g.example.com:80", "10", "j") >>> add("g", "http://h.example.com", "11", "k") >>> add("h", "i.example.com:80", "12", "l") >>> add("i", "j.example.com", "13", "m") >>> mgr.find_user_password("f", "g.example.com:100") (None, None) >>> mgr.find_user_password("f", "g.example.com:80") ('10', 'j') >>> mgr.find_user_password("f", "g.example.com") (None, None) >>> mgr.find_user_password("f", "http://g.example.com:100") (None, None) >>> mgr.find_user_password("f", "http://g.example.com:80") ('10', 'j') >>> mgr.find_user_password("f", "http://g.example.com") ('10', 'j') >>> mgr.find_user_password("g", "h.example.com") ('11', 'k') >>> mgr.find_user_password("g", "h.example.com:80") ('11', 'k') >>> mgr.find_user_password("g", "http://h.example.com:80") ('11', 'k') >>> mgr.find_user_password("h", "i.example.com") (None, None) >>> mgr.find_user_password("h", "i.example.com:80") ('12', 'l') >>> mgr.find_user_password("h", "http://i.example.com:80") ('12', 'l') >>> mgr.find_user_password("i", "j.example.com") ('13', 'm') >>> mgr.find_user_password("i", "j.example.com:80") (None, None) >>> mgr.find_user_password("i", "http://j.example.com") ('13', 'm') >>> mgr.find_user_password("i", "http://j.example.com:80") (None, None) """ class MockOpener: addheaders = [] def open(self, req, data=None): self.req, self.data = req, data def error(self, proto, *args): self.proto, self.args = proto, args class MockFile: def read(self, count=None): pass def readline(self, count=None): pass def close(self): pass class MockHeaders(dict): def getheaders(self, name): return list(self.values()) class MockResponse(StringIO.StringIO): def __init__(self, code, msg, headers, data, url=None): StringIO.StringIO.__init__(self, data) self.code, self.msg, self.headers, self.url = code, msg, headers, url def info(self): return self.headers def geturl(self): return self.url class MockCookieJar: def add_cookie_header(self, request): self.ach_req = request def extract_cookies(self, response, request): self.ec_req, self.ec_r = request, response class FakeMethod: def __init__(self, meth_name, action, handle): self.meth_name = meth_name self.handle = handle self.action = action def __call__(self, *args): return self.handle(self.meth_name, self.action, *args) class MockHandler: # useful for testing handler machinery # see add_ordered_mock_handlers() docstring handler_order = 500 def __init__(self, methods): self._define_methods(methods) def _define_methods(self, methods): for spec in methods: if len(spec) == 2: name, action = spec else: name, action = spec, None meth = FakeMethod(name, action, self.handle) setattr(self.__class__, name, meth) def handle(self, fn_name, action, *args, **kwds): self.parent.calls.append((self, fn_name, args, kwds)) if action is None: return None elif action == "return self": return self elif action == "return response": res = MockResponse(200, "OK", {}, "") return res elif action == "return request": return Request("http://blah/") elif action.startswith("error"): code = action[action.rfind(" ")+1:] try: code = int(code) except ValueError: pass res = MockResponse(200, "OK", {}, "") return self.parent.error("http", args[0], res, code, "", {}) elif action == "raise": raise urllib2.URLError("blah") assert False def close(self): pass def add_parent(self, parent): self.parent = parent self.parent.calls = [] def __lt__(self, other): if not hasattr(other, "handler_order"): # No handler_order, leave in original order. Yuck. return True return self.handler_order < other.handler_order def add_ordered_mock_handlers(opener, meth_spec): """Create MockHandlers and add them to an OpenerDirector. meth_spec: list of lists of tuples and strings defining methods to define on handlers. eg: [["http_error", "ftp_open"], ["http_open"]] defines methods .http_error() and .ftp_open() on one handler, and .http_open() on another. These methods just record their arguments and return None. Using a tuple instead of a string causes the method to perform some action (see MockHandler.handle()), eg: [["http_error"], [("http_open", "return request")]] defines .http_error() on one handler (which simply returns None), and .http_open() on another handler, which returns a Request object. """ handlers = [] count = 0 for meths in meth_spec: class MockHandlerSubclass(MockHandler): pass h = MockHandlerSubclass(meths) h.handler_order += count h.add_parent(opener) count = count + 1 handlers.append(h) opener.add_handler(h) return handlers def build_test_opener(*handler_instances): opener = OpenerDirector() for h in handler_instances: opener.add_handler(h) return opener class MockHTTPHandler(urllib2.BaseHandler): # useful for testing redirections and auth # sends supplied headers and code as first response # sends 200 OK as second response def __init__(self, code, headers): self.code = code self.headers = headers self.reset() def reset(self): self._count = 0 self.requests = [] def http_open(self, req): import mimetools, httplib, copy from StringIO import StringIO self.requests.append(copy.deepcopy(req)) if self._count == 0: self._count = self._count + 1 name = httplib.responses[self.code] msg = mimetools.Message(StringIO(self.headers)) return self.parent.error( "http", req, MockFile(), self.code, name, msg) else: self.req = req msg = mimetools.Message(StringIO("\r\n\r\n")) return MockResponse(200, "OK", msg, "", req.get_full_url()) class MockPasswordManager: def add_password(self, realm, uri, user, password): self.realm = realm self.url = uri self.user = user self.password = password def find_user_password(self, realm, authuri): self.target_realm = realm self.target_url = authuri return self.user, self.password class OpenerDirectorTests(unittest.TestCase): def test_badly_named_methods(self): # test work-around for three methods that accidentally follow the # naming conventions for handler methods # (*_open() / *_request() / *_response()) # These used to call the accidentally-named methods, causing a # TypeError in real code; here, returning self from these mock # methods would either cause no exception, or AttributeError. from urllib2 import URLError o = OpenerDirector() meth_spec = [ [("do_open", "return self"), ("proxy_open", "return self")], [("redirect_request", "return self")], ] handlers = add_ordered_mock_handlers(o, meth_spec) o.add_handler(urllib2.UnknownHandler()) for scheme in "do", "proxy", "redirect": self.assertRaises(URLError, o.open, scheme+"://example.com/") def test_handled(self): # handler returning non-None means no more handlers will be called o = OpenerDirector() meth_spec = [ ["http_open", "ftp_open", "http_error_302"], ["ftp_open"], [("http_open", "return self")], [("http_open", "return self")], ] handlers = add_ordered_mock_handlers(o, meth_spec) req = Request("http://example.com/") r = o.open(req) # Second .http_open() gets called, third doesn't, since second returned # non-None. Handlers without .http_open() never get any methods called # on them. # In fact, second mock handler defining .http_open() returns self # (instead of response), which becomes the OpenerDirector's return # value. self.assertEqual(r, handlers[2]) calls = [(handlers[0], "http_open"), (handlers[2], "http_open")] for expected, got in zip(calls, o.calls): handler, name, args, kwds = got self.assertEqual((handler, name), expected) self.assertEqual(args, (req,)) def test_handler_order(self): o = OpenerDirector() handlers = [] for meths, handler_order in [ ([("http_open", "return self")], 500), (["http_open"], 0), ]: class MockHandlerSubclass(MockHandler): pass h = MockHandlerSubclass(meths) h.handler_order = handler_order handlers.append(h) o.add_handler(h) r = o.open("http://example.com/") # handlers called in reverse order, thanks to their sort order self.assertEqual(o.calls[0][0], handlers[1]) self.assertEqual(o.calls[1][0], handlers[0]) def test_raise(self): # raising URLError stops processing of request o = OpenerDirector() meth_spec = [ [("http_open", "raise")], [("http_open", "return self")], ] handlers = add_ordered_mock_handlers(o, meth_spec) req = Request("http://example.com/") self.assertRaises(urllib2.URLError, o.open, req) self.assertEqual(o.calls, [(handlers[0], "http_open", (req,), {})]) ## def test_error(self): ## # XXX this doesn't actually seem to be used in standard library, ## # but should really be tested anyway... def test_http_error(self): # XXX http_error_default # http errors are a special case o = OpenerDirector() meth_spec = [ [("http_open", "error 302")], [("http_error_400", "raise"), "http_open"], [("http_error_302", "return response"), "http_error_303", "http_error"], [("http_error_302")], ] handlers = add_ordered_mock_handlers(o, meth_spec) class Unknown: def __eq__(self, other): return True req = Request("http://example.com/") r = o.open(req) assert len(o.calls) == 2 calls = [(handlers[0], "http_open", (req,)), (handlers[2], "http_error_302", (req, Unknown(), 302, "", {}))] for expected, got in zip(calls, o.calls): handler, method_name, args = expected self.assertEqual((handler, method_name), got[:2]) self.assertEqual(args, got[2]) def test_processors(self): # *_request / *_response methods get called appropriately o = OpenerDirector() meth_spec = [ [("http_request", "return request"), ("http_response", "return response")], [("http_request", "return request"), ("http_response", "return response")], ] handlers = add_ordered_mock_handlers(o, meth_spec) req = Request("http://example.com/") r = o.open(req) # processor methods are called on *all* handlers that define them, # not just the first handler that handles the request calls = [ (handlers[0], "http_request"), (handlers[1], "http_request"), (handlers[0], "http_response"), (handlers[1], "http_response")] for i, (handler, name, args, kwds) in enumerate(o.calls): if i < 2: # *_request self.assertEqual((handler, name), calls[i]) self.assertEqual(len(args), 1) self.assert_(isinstance(args[0], Request)) else: # *_response self.assertEqual((handler, name), calls[i]) self.assertEqual(len(args), 2) self.assert_(isinstance(args[0], Request)) # response from opener.open is None, because there's no # handler that defines http_open to handle it self.assert_(args[1] is None or isinstance(args[1], MockResponse)) def sanepathname2url(path): import urllib urlpath = urllib.pathname2url(path) if os.name == "nt" and urlpath.startswith("///"): urlpath = urlpath[2:] # XXX don't ask me about the mac... return urlpath class HandlerTests(unittest.TestCase): def test_ftp(self): class MockFTPWrapper: def __init__(self, data): self.data = data def retrfile(self, filename, filetype): self.filename, self.filetype = filename, filetype return StringIO.StringIO(self.data), len(self.data) class NullFTPHandler(urllib2.FTPHandler): def __init__(self, data): self.data = data def connect_ftp(self, user, passwd, host, port, dirs): self.user, self.passwd = user, passwd self.host, self.port = host, port self.dirs = dirs self.ftpwrapper = MockFTPWrapper(self.data) return self.ftpwrapper import ftplib, socket data = "rheum rhaponicum" h = NullFTPHandler(data) o = h.parent = MockOpener() for url, host, port, type_, dirs, filename, mimetype in [ ("ftp://localhost/foo/bar/baz.html", "localhost", ftplib.FTP_PORT, "I", ["foo", "bar"], "baz.html", "text/html"), ("ftp://localhost:80/foo/bar/", "localhost", 80, "D", ["foo", "bar"], "", None), ("ftp://localhost/baz.gif;type=a", "localhost", ftplib.FTP_PORT, "A", [], "baz.gif", None), # XXX really this should guess image/gif ]: r = h.ftp_open(Request(url)) # ftp authentication not yet implemented by FTPHandler self.assert_(h.user == h.passwd == "") self.assertEqual(h.host, socket.gethostbyname(host)) self.assertEqual(h.port, port) self.assertEqual(h.dirs, dirs) self.assertEqual(h.ftpwrapper.filename, filename) self.assertEqual(h.ftpwrapper.filetype, type_) headers = r.info() self.assertEqual(headers.get("Content-type"), mimetype) self.assertEqual(int(headers["Content-length"]), len(data)) def test_file(self): import time, rfc822, socket h = urllib2.FileHandler() o = h.parent = MockOpener() TESTFN = test_support.TESTFN urlpath = sanepathname2url(os.path.abspath(TESTFN)) towrite = "hello, world\n" urls = [ "file://localhost%s" % urlpath, "file://%s" % urlpath, "file://%s%s" % (socket.gethostbyname('localhost'), urlpath), ] try: localaddr = socket.gethostbyname(socket.gethostname()) except socket.gaierror: localaddr = '' if localaddr: urls.append("file://%s%s" % (localaddr, urlpath)) for url in urls: f = open(TESTFN, "wb") try: try: f.write(towrite) finally: f.close() r = h.file_open(Request(url)) try: data = r.read() headers = r.info() newurl = r.geturl() finally: r.close() stats = os.stat(TESTFN) modified = rfc822.formatdate(stats.st_mtime) finally: os.remove(TESTFN) self.assertEqual(data, towrite) self.assertEqual(headers["Content-type"], "text/plain") self.assertEqual(headers["Content-length"], "13") self.assertEqual(headers["Last-modified"], modified) for url in [ "file://localhost:80%s" % urlpath, "file:///file_does_not_exist.txt", "file://%s:80%s/%s" % (socket.gethostbyname('localhost'), os.getcwd(), TESTFN), "file://somerandomhost.ontheinternet.com%s/%s" % (os.getcwd(), TESTFN), ]: try: f = open(TESTFN, "wb") try: f.write(towrite) finally: f.close() self.assertRaises(urllib2.URLError, h.file_open, Request(url)) finally: os.remove(TESTFN) h = urllib2.FileHandler() o = h.parent = MockOpener() # XXXX why does // mean ftp (and /// mean not ftp!), and where # is file: scheme specified? I think this is really a bug, and # what was intended was to distinguish between URLs like: # file:/blah.txt (a file) # file://localhost/blah.txt (a file) # file:///blah.txt (a file) # file://ftp.example.com/blah.txt (an ftp URL) for url, ftp in [ ("file://ftp.example.com//foo.txt", True), ("file://ftp.example.com///foo.txt", False), # XXXX bug: fails with OSError, should be URLError ("file://ftp.example.com/foo.txt", False), ]: req = Request(url) try: h.file_open(req) # XXXX remove OSError when bug fixed except (urllib2.URLError, OSError): self.assert_(not ftp) else: self.assert_(o.req is req) self.assertEqual(req.type, "ftp") def test_http(self): class MockHTTPResponse: def __init__(self, fp, msg, status, reason): self.fp = fp self.msg = msg self.status = status self.reason = reason def read(self): return '' class MockHTTPClass: def __init__(self): self.req_headers = [] self.data = None self.raise_on_endheaders = False def __call__(self, host): self.host = host return self def set_debuglevel(self, level): self.level = level def request(self, method, url, body=None, headers={}): self.method = method self.selector = url self.req_headers += headers.items() self.req_headers.sort() if body: self.data = body if self.raise_on_endheaders: import socket raise socket.error() def getresponse(self): return MockHTTPResponse(MockFile(), {}, 200, "OK") h = urllib2.AbstractHTTPHandler() o = h.parent = MockOpener() url = "http://example.com/" for method, data in [("GET", None), ("POST", "blah")]: req = Request(url, data, {"Foo": "bar"}) req.add_unredirected_header("Spam", "eggs") http = MockHTTPClass() r = h.do_open(http, req) # result attributes r.read; r.readline # wrapped MockFile methods r.info; r.geturl # addinfourl methods r.code, r.msg == 200, "OK" # added from MockHTTPClass.getreply() hdrs = r.info() hdrs.get; hdrs.__contains__ # r.info() gives dict from .getreply() self.assertEqual(r.geturl(), url) self.assertEqual(http.host, "example.com") self.assertEqual(http.level, 0) self.assertEqual(http.method, method) self.assertEqual(http.selector, "/") self.assertEqual(http.req_headers, [("Connection", "close"), ("Foo", "bar"), ("Spam", "eggs")]) self.assertEqual(http.data, data) # check socket.error converted to URLError http.raise_on_endheaders = True self.assertRaises(urllib2.URLError, h.do_open, http, req) # check adding of standard headers o.addheaders = [("Spam", "eggs")] for data in "", None: # POST, GET req = Request("http://example.com/", data) r = MockResponse(200, "OK", {}, "") newreq = h.do_request_(req) if data is None: # GET self.assert_("Content-length" not in req.unredirected_hdrs) self.assert_("Content-type" not in req.unredirected_hdrs) 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) # all 2xx are 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 r = MockResponse(202, "Accepted", {}, "", url) newr = h.http_response(req, r) self.assert_(r is newr) self.assert_(not hasattr(o, "proto")) # o.error not called r = MockResponse(206, "Partial content", {}, "", 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(502, "Bad gateway", {}, "", url) self.assert_(h.http_response(req, r) is None) self.assertEqual(o.proto, "http") # o.error called self.assertEqual(o.args, (req, r, 502, "Bad gateway", {})) def test_cookies(self): cj = MockCookieJar() h = urllib2.HTTPCookieProcessor(cj) o = h.parent = MockOpener() req = Request("http://example.com/") r = MockResponse(200, "OK", {}, "") newreq = h.http_request(req) self.assert_(cj.ach_req is req is newreq) self.assertEquals(req.get_origin_req_host(), "example.com") self.assert_(not req.is_unverifiable()) newr = h.http_response(req, r) self.assert_(cj.ec_req is req) self.assert_(cj.ec_r is r is newr) 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", MockHeaders({"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) def redirect(h, req, url=to_url): h.http_error_302(req, MockFile(), 302, "Blah", MockHeaders({"location": url})) # Note that the *original* request shares the same record of # redirections with the sub-requests caused by the redirections. # detect infinite loop redirect of a URL to itself req = Request(from_url, origin_req_host="example.com") count = 0 try: while 1: redirect(h, req, "http://example.com/") count = count + 1 except urllib2.HTTPError: # don't stop until max_repeats, because cookies may introduce state self.assertEqual(count, urllib2.HTTPRedirectHandler.max_repeats) # detect endless non-repeating chain of redirects req = Request(from_url, origin_req_host="example.com") count = 0 try: while 1: redirect(h, req, "http://example.com/%d" % count) count = count + 1 except urllib2.HTTPError: self.assertEqual(count, urllib2.HTTPRedirectHandler.max_redirections) def test_cookie_redirect(self): # cookies shouldn't leak into redirected requests from cookielib import CookieJar from test.test_cookielib import interact_netscape cj = CookieJar() interact_netscape(cj, "http://www.example.com/", "spam=eggs") hh = MockHTTPHandler(302, "Location: http://www.cracker.com/\r\n\r\n") hdeh = urllib2.HTTPDefaultErrorHandler() hrh = urllib2.HTTPRedirectHandler() cp = urllib2.HTTPCookieProcessor(cj) o = build_test_opener(hh, hdeh, hrh, cp) o.open("http://www.example.com/") self.assert_(not hh.req.has_header("Cookie")) def test_proxy(self): o = OpenerDirector() ph = urllib2.ProxyHandler(dict(http="proxy.example.com:3128")) o.add_handler(ph) meth_spec = [ [("http_open", "return response")] ] handlers = add_ordered_mock_handlers(o, meth_spec) req = Request("http://acme.example.com/") self.assertEqual(req.get_host(), "acme.example.com") r = o.open(req) self.assertEqual(req.get_host(), "proxy.example.com:3128") self.assertEqual([(handlers[0], "http_open")], [tup[0:2] for tup in o.calls]) def test_basic_auth(self): opener = OpenerDirector() password_manager = MockPasswordManager() auth_handler = urllib2.HTTPBasicAuthHandler(password_manager) realm = "ACME Widget Store" http_handler = MockHTTPHandler( 401, 'WWW-Authenticate: Basic realm="%s"\r\n\r\n' % realm) opener.add_handler(auth_handler) opener.add_handler(http_handler) self._test_basic_auth(opener, auth_handler, "Authorization", realm, http_handler, password_manager, "http://acme.example.com/protected", "http://acme.example.com/protected", ) def test_proxy_basic_auth(self): opener = OpenerDirector() ph = urllib2.ProxyHandler(dict(http="proxy.example.com:3128")) opener.add_handler(ph) password_manager = MockPasswordManager() auth_handler = urllib2.ProxyBasicAuthHandler(password_manager) realm = "ACME Networks" http_handler = MockHTTPHandler( 407, 'Proxy-Authenticate: Basic realm="%s"\r\n\r\n' % realm) opener.add_handler(auth_handler) opener.add_handler(http_handler) self._test_basic_auth(opener, auth_handler, "Proxy-authorization", realm, http_handler, password_manager, "http://acme.example.com:3128/protected", "proxy.example.com:3128", ) def test_basic_and_digest_auth_handlers(self): # HTTPDigestAuthHandler threw an exception if it couldn't handle a 40* # response (http://python.org/sf/1479302), where it should instead # return None to allow another handler (especially # HTTPBasicAuthHandler) to handle the response. # Also (http://python.org/sf/14797027, RFC 2617 section 1.2), we must # try digest first (since it's the strongest auth scheme), so we record # order of calls here to check digest comes first: class RecordingOpenerDirector(OpenerDirector): def __init__(self): OpenerDirector.__init__(self) self.recorded = [] def record(self, info): self.recorded.append(info) class TestDigestAuthHandler(urllib2.HTTPDigestAuthHandler): def http_error_401(self, *args, **kwds): self.parent.record("digest") urllib2.HTTPDigestAuthHandler.http_error_401(self, *args, **kwds) class TestBasicAuthHandler(urllib2.HTTPBasicAuthHandler): def http_error_401(self, *args, **kwds): self.parent.record("basic") urllib2.HTTPBasicAuthHandler.http_error_401(self, *args, **kwds) opener = RecordingOpenerDirector() password_manager = MockPasswordManager() digest_handler = TestDigestAuthHandler(password_manager) basic_handler = TestBasicAuthHandler(password_manager) realm = "ACME Networks" http_handler = MockHTTPHandler( 401, 'WWW-Authenticate: Basic realm="%s"\r\n\r\n' % realm) opener.add_handler(basic_handler) opener.add_handler(digest_handler) opener.add_handler(http_handler) # check basic auth isn't blocked by digest handler failing self._test_basic_auth(opener, basic_handler, "Authorization", realm, http_handler, password_manager, "http://acme.example.com/protected", "http://acme.example.com/protected", ) # check digest was tried before basic (twice, because # _test_basic_auth called .open() twice) self.assertEqual(opener.recorded, ["digest", "basic"]*2) def _test_basic_auth(self, opener, auth_handler, auth_header, realm, http_handler, password_manager, request_url, protected_url): import base64, httplib user, password = "wile", "coyote" # .add_password() fed through to password manager auth_handler.add_password(realm, request_url, user, password) self.assertEqual(realm, password_manager.realm) self.assertEqual(request_url, password_manager.url) self.assertEqual(user, password_manager.user) self.assertEqual(password, password_manager.password) r = opener.open(request_url) # should have asked the password manager for the username/password self.assertEqual(password_manager.target_realm, realm) self.assertEqual(password_manager.target_url, protected_url) # expect one request without authorization, then one with self.assertEqual(len(http_handler.requests), 2) self.assertFalse(http_handler.requests[0].has_header(auth_header)) userpass = '%s:%s' % (user, password) auth_hdr_value = 'Basic '+base64.encodestring(userpass).strip() self.assertEqual(http_handler.requests[1].get_header(auth_header), auth_hdr_value) # if the password manager can't find a password, the handler won't # handle the HTTP auth error password_manager.user = password_manager.password = None http_handler.reset() r = opener.open(request_url) self.assertEqual(len(http_handler.requests), 1) self.assertFalse(http_handler.requests[0].has_header(auth_header)) 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_urllib2 test_support.run_doctest(test_urllib2, verbose) test_support.run_doctest(urllib2, verbose) tests = (TrivialTests, OpenerDirectorTests, HandlerTests, MiscTests) test_support.run_unittest(*tests) if __name__ == "__main__": test_main(verbose=True)