import unittest from test import support import contextlib import socket import urllib.request import sys import os import email.message import time support.requires('network') class URLTimeoutTest(unittest.TestCase): # XXX this test doesn't seem to test anything useful. TIMEOUT = 30.0 def setUp(self): socket.setdefaulttimeout(self.TIMEOUT) def tearDown(self): socket.setdefaulttimeout(None) def testURLread(self): with support.transient_internet("www.example.com"): f = urllib.request.urlopen("http://www.example.com/") x = f.read() class urlopenNetworkTests(unittest.TestCase): """Tests urllib.reqest.urlopen using the network. These tests are not exhaustive. Assuming that testing using files does a good job overall of some of the basic interface features. There are no tests exercising the optional 'data' and 'proxies' arguments. No tests for transparent redirection have been written. setUp is not used for always constructing a connection to http://www.example.com/ since there a few tests that don't use that address and making a connection is expensive enough to warrant minimizing unneeded connections. """ @contextlib.contextmanager def urlopen(self, *args, **kwargs): resource = args[0] with support.transient_internet(resource): r = urllib.request.urlopen(*args, **kwargs) try: yield r finally: r.close() def test_basic(self): # Simple test expected to pass. with self.urlopen("http://www.example.com/") as open_url: for attr in ("read", "readline", "readlines", "fileno", "close", "info", "geturl"): self.assertTrue(hasattr(open_url, attr), "object returned from " "urlopen lacks the %s attribute" % attr) self.assertTrue(open_url.read(), "calling 'read' failed") def test_readlines(self): # Test both readline and readlines. with self.urlopen("http://www.example.com/") as open_url: self.assertIsInstance(open_url.readline(), bytes, "readline did not return a string") self.assertIsInstance(open_url.readlines(), list, "readlines did not return a list") def test_info(self): # Test 'info'. with self.urlopen("http://www.example.com/") as open_url: info_obj = open_url.info() self.assertIsInstance(info_obj, email.message.Message, "object returned by 'info' is not an " "instance of email.message.Message") self.assertEqual(info_obj.get_content_subtype(), "html") def test_geturl(self): # Make sure same URL as opened is returned by geturl. URL = "http://www.example.com/" with self.urlopen(URL) as open_url: gotten_url = open_url.geturl() self.assertEqual(gotten_url, URL) def test_getcode(self): # test getcode() with the fancy opener to get 404 error codes URL = "http://www.example.com/XXXinvalidXXX" with support.transient_internet(URL): open_url = urllib.request.FancyURLopener().open(URL) try: code = open_url.getcode() finally: open_url.close() self.assertEqual(code, 404) # On Windows, socket handles are not file descriptors; this # test can't pass on Windows. @unittest.skipIf(sys.platform in ('win32',), 'not appropriate for Windows') def test_fileno(self): # Make sure fd returned by fileno is valid. with self.urlopen("http://www.google.com/", timeout=None) as open_url: fd = open_url.fileno() with os.fdopen(fd, 'rb') as f: self.assertTrue(f.read(), "reading from file created using fd " "returned by fileno failed") def test_bad_address(self): # Make sure proper exception is raised when connecting to a bogus # address. bogus_domain = "sadflkjsasf.i.nvali.d" try: socket.gethostbyname(bogus_domain) except OSError: # socket.gaierror is too narrow, since getaddrinfo() may also # fail with EAI_SYSTEM and ETIMEDOUT (seen on Ubuntu 13.04), # i.e. Python's TimeoutError. pass else: # This happens with some overzealous DNS providers such as OpenDNS self.skipTest("%r should not resolve for test to work" % bogus_domain) failure_explanation = ('opening an invalid URL did not raise OSError; ' 'can be caused by a broken DNS server ' '(e.g. returns 404 or hijacks page)') with self.assertRaises(OSError, msg=failure_explanation): # SF patch 809915: In Sep 2003, VeriSign started highjacking # invalid .com and .net addresses to boost traffic to their own # site. This test started failing then. One hopes the .invalid # domain will be spared to serve its defined purpose. urllib.request.urlopen("http://sadflkjsasf.i.nvali.d/") class urlretrieveNetworkTests(unittest.TestCase): """Tests urllib.request.urlretrieve using the network.""" @contextlib.contextmanager def urlretrieve(self, *args, **kwargs): resource = args[0] with support.transient_internet(resource): file_location, info = urllib.request.urlretrieve(*args, **kwargs) try: yield file_location, info finally: support.unlink(file_location) def test_basic(self): # Test basic functionality. with self.urlretrieve("http://www.example.com/") as (file_location, info): self.assertTrue(os.path.exists(file_location), "file location returned by" " urlretrieve is not a valid path") with open(file_location, 'rb') as f: self.assertTrue(f.read(), "reading from the file location returned" " by urlretrieve failed") def test_specified_path(self): # Make sure that specifying the location of the file to write to works. with self.urlretrieve("http://www.example.com/", support.TESTFN) as (file_location, info): self.assertEqual(file_location, support.TESTFN) self.assertTrue(os.path.exists(file_location)) with open(file_location, 'rb') as f: self.assertTrue(f.read(), "reading from temporary file failed") def test_header(self): # Make sure header returned as 2nd value from urlretrieve is good. with self.urlretrieve("http://www.example.com/") as (file_location, info): self.assertIsInstance(info, email.message.Message, "info is not an instance of email.message.Message") logo = "http://www.example.com/" def test_data_header(self): with self.urlretrieve(self.logo) as (file_location, fileheaders): datevalue = fileheaders.get('Date') dateformat = '%a, %d %b %Y %H:%M:%S GMT' try: time.strptime(datevalue, dateformat) except ValueError: self.fail('Date value not in %r format', dateformat) def test_reporthook(self): records = [] def recording_reporthook(blocks, block_size, total_size): records.append((blocks, block_size, total_size)) with self.urlretrieve(self.logo, reporthook=recording_reporthook) as ( file_location, fileheaders): expected_size = int(fileheaders['Content-Length']) records_repr = repr(records) # For use in error messages. self.assertGreater(len(records), 1, msg="There should always be two " "calls; the first one before the transfer starts.") self.assertEqual(records[0][0], 0) self.assertGreater(records[0][1], 0, msg="block size can't be 0 in %s" % records_repr) self.assertEqual(records[0][2], expected_size) self.assertEqual(records[-1][2], expected_size) block_sizes = {block_size for _, block_size, _ in records} self.assertEqual({records[0][1]}, block_sizes, msg="block sizes in %s must be equal" % records_repr) self.assertGreaterEqual(records[-1][0]*records[0][1], expected_size, msg="number of blocks * block size must be" " >= total size in %s" % records_repr) if __name__ == "__main__": unittest.main()