[Python-checkins] python/dist/src/Lib/test test_urllib2.py,1.7,1.8

jhylton at users.sourceforge.net jhylton at users.sourceforge.net
Sun Dec 14 00:27:36 EST 2003


Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1:/tmp/cvs-serv20853/Lib/test

Modified Files:
	test_urllib2.py 
Log Message:
SF patch 852995: add processors feature to urllib2

John J. Lee writes: "the patch makes it possible to implement
functionality like HTTP cookie handling, Refresh handling,
etc. etc. using handler objects. At the moment urllib2's handler
objects aren't quite up to the job, which results in a lot of
cut-n-paste and subclassing. I believe the changes are
backwards-compatible, with the exception of people who've
reimplemented build_opener()'s functionality -- those people would
need to call opener.add_handler(HTTPErrorProcessor).

The main change is allowing handlers to implement
methods like:

http_request(request)
http_response(request, response)

In addition to the usual

http_open(request)
http_error{_*}(...) 
"

Note that the change isn't well documented at least in part because
handlers aren't well documented at all.  Need to fix this.

Add a bunch of new tests.  It appears that none of these tests
actually use the network, so they don't need to be guarded by a
resource flag.


Index: test_urllib2.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_urllib2.py,v
retrieving revision 1.7
retrieving revision 1.8
diff -C2 -d -r1.7 -r1.8
*** test_urllib2.py	23 Jul 2002 19:04:09 -0000	1.7
--- test_urllib2.py	14 Dec 2003 05:27:34 -0000	1.8
***************
*** 1,31 ****
! from test.test_support import verify
! import urllib2
  import os
  
! # A couple trivial tests
  
! try:
!     urllib2.urlopen('bogus url')
! except ValueError:
!     pass
! else:
!     verify(0)
  
! # 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()
--- 1,616 ----
! import unittest
! from test import test_support
! 
  import os
+ import StringIO
  
! import urllib2
! from urllib2 import Request, OpenerDirector
  
! # XXX
! # Request
! # CacheFTPHandler (hard to write)
! # parse_keqv_list, parse_http_list (I'm leaving this for Anthony Baxter
! #  and Greg Stein, since they're doing Digest Authentication)
! # Authentication stuff (ditto)
! # ProxyHandler, CustomProxy, CustomProxyHandler (I don't use a proxy)
! # GopherHandler (haven't used gopher for a decade or so...)
  
! 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()
! 
! 
! 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 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 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:
!     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
! 
! class OpenerDirectorTests(unittest.TestCase):
! 
!     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.assert_(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.assert_((handler, name) == expected)
!             self.assert_(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.assert_(o.calls[0][0] == handlers[1])
!         self.assert_(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.assert_(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.assert_((handler, method_name) == got[:2])
!             assert 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.assert_((handler, name) == calls[i])
!                 self.assert_(len(args) == 1)
!                 self.assert_(isinstance(args[0], Request))
!             else:
!                 # *_response
!                 self.assert_((handler, name) == calls[i])
!                 self.assert_(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))
! 
! 
! 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"),
! # XXXX Bug: FTPHandler tries to gethostbyname "localhost:80", with the
! #  port still there.
! ##             ("ftp://localhost:80/foo/bar/",
! ##              "localhost", 80, "D",
! ##              ["foo", "bar"], "", None),
! # XXXX bug: second use of splitattr() in FTPHandler should be splitvalue()
! ##             ("ftp://localhost/baz.gif;type=a",
! ##              "localhost", ftplib.FTP_PORT, "A",
! ##              [], "baz.gif", "image/gif"),
!             ]:
!             r = h.ftp_open(Request(url))
!             # ftp authentication not yet implemented by FTPHandler
!             self.assert_(h.user == h.passwd == "")
!             self.assert_(h.host == socket.gethostbyname(host))
!             self.assert_(h.port == port)
!             self.assert_(h.dirs == dirs)
!             self.assert_(h.ftpwrapper.filename == filename)
!             self.assert_(h.ftpwrapper.filetype == type_)
!             headers = r.info()
!             self.assert_(headers["Content-type"] == mimetype)
!             self.assert_(int(headers["Content-length"]) == len(data))
! 
!     def test_file(self):
!         import time, rfc822, socket
!         h = urllib2.FileHandler()
!         o = h.parent = MockOpener()
! 
!         #from test_support import TESTFN
!         TESTFN = "test.txt"
!         towrite = "hello, world\n"
!         for url in [
!             "file://localhost%s/%s" % (os.getcwd(), TESTFN),
!             "file://%s/%s" % (os.getcwd(), TESTFN),
!             "file://%s%s/%s" % (socket.gethostbyname('localhost'),
!                                 os.getcwd(), TESTFN),
!             "file://%s%s/%s" % (socket.gethostbyname(socket.gethostname()),
!                                 os.getcwd(), TESTFN),
!             # XXX Windows / Mac format(s), ... ?
!             ]:
!             f = open(TESTFN, "w")
!             try:
!                 try:
!                     f.write(towrite)
!                 finally:
!                     f.close()
! 
!                 r = h.file_open(Request(url))
!                 try:
!                     data = r.read()
!                     read_time = time.time()
!                     headers = r.info()
!                     newurl = r.geturl()
!                 finally:
!                     r.close()
!             finally:
!                 os.remove(TESTFN)
!             self.assert_(data == towrite)
!             self.assert_(headers["Content-type"] == "text/plain")
!             self.assert_(headers["Content-length"] == "13")
!             # Fudge Last-modified string comparison by one second to
!             # prevent spurious failure on crossing a second boundary while
!             # executing this test.
!             unfudged = rfc822.formatdate(read_time)
!             fudged = rfc822.formatdate(read_time-1)
!             self.assert_(headers["Last-modified"] in [unfudged, fudged])
! 
!         for url in [
!             "file://localhost:80%s/%s" % (os.getcwd(), TESTFN),
! # XXXX bug: these fail with socket.gaierror, should be URLError
! ##             "file://%s:80%s/%s" % (socket.gethostbyname('localhost'),
! ##                                    os.getcwd(), TESTFN),
! ##             "file://somerandomhost.ontheinternet.com%s/%s" %
! ##             (os.getcwd(), TESTFN),
!             ]:
!             try:
!                 f = open(TESTFN, "w")
!                 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.assert_(req.type == "ftp")
! 
!     def test_http(self):
!         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 putrequest(self, method, selector):
!                 self.method, self.selector = method, selector
!             def putheader(self, key, value):
!                 self.req_headers.append((key, value))
!             def endheaders(self):
!                 if self.raise_on_endheaders:
!                     import socket
!                     raise socket.error()
!             def send(self, data): self.data = data
!             def getreply(self): return 200, "OK", {}
!             def getfile(self): return MockFile()
! 
!         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.has_key  # r.info() gives dict from .getreply()
!             self.assert_(r.geturl() == url)
! 
!             self.assert_(http.host == "example.com")
!             self.assert_(http.level == 0)
!             self.assert_(http.method == method)
!             self.assert_(http.selector == "/")
!             self.assert_(http.req_headers == [("Foo", "bar"), ("Spam", "eggs")])
!             self.assert_(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.assert_(req.unredirected_hdrs["Content-length"] == "0")
!                 self.assert_(req.unredirected_hdrs["Content-type"] ==
!                              "application/x-www-form-urlencoded")
!             # XXX the details of Host could be better tested
!             self.assert_(req.unredirected_hdrs["Host"] == "example.com")
!             self.assert_(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.assert_(req.unredirected_hdrs["Content-length"] == "foo")
!             self.assert_(req.unredirected_hdrs["Content-type"] == "bar")
!             self.assert_(req.unredirected_hdrs["Host"] == "baz")
!             self.assert_(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.assert_(o.proto == "http")  # o.error called
!         self.assert_(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.assert_(o.req.get_full_url() == to_url)
!                 try:
!                     self.assert_(o.req.get_method() == "GET")
!                 except AttributeError:
!                     self.assert_(not o.req.has_data())
!                 self.assert_(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.assert_(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)





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