Lib/test/test_urllibnet.py

   1 #!/usr/bin/env python
   2
   3 import unittest
   4 from test import test_support
   5
   6 import socket
   7 import urllib
   8 import sys
   9 import os
  10 import mimetools
  11
  12 class URLTimeoutTest(unittest.TestCase):
  13
  14     TIMEOUT = 10.0
  15
  16     def setUp(self):
  17         socket.setdefaulttimeout(self.TIMEOUT)
  18
  19     def tearDown(self):
  20         socket.setdefaulttimeout(None)
  21
  22     def testURLread(self):
  23         f = urllib.urlopen("http://www.python.org/")
  24         x = f.read()
  25
  26 class urlopenNetworkTests(unittest.TestCase):
  27     """Tests urllib.urlopen using the network.
  28
  29     These tests are not exhaustive.  Assuming that testing using files does a
  30     good job overall of some of the basic interface features.  There are no
  31     tests exercising the optional 'data' and 'proxies' arguments.  No tests
  32     for transparent redirection have been written.
  33
  34     setUp is not used for always constructing a connection to
  35     http://www.python.org/ since there a few tests that don't use that address
  36     and making a connection is expensive enough to warrant minimizing unneeded
  37     connections.
  38
  39     """
  40
  41     def test_basic(self):
  42         # Simple test expected to pass.
  43         open_url = urllib.urlopen("http://www.python.org/")
  44         for attr in ("read", "readline", "readlines", "fileno", "close",
  45                      "info", "geturl"):
  46             self.assert_(hasattr(open_url, attr), "object returned from "
  47                             "urlopen lacks the %s attribute" % attr)
  48         try:
  49             self.assert_(open_url.read(), "calling 'read' failed")
  50         finally:
  51             open_url.close()
  52
  53     def test_readlines(self):
  54         # Test both readline and readlines.
  55         open_url = urllib.urlopen("http://www.python.org/")
  56         try:
  57             self.assert_(isinstance(open_url.readline(), basestring),
  58                          "readline did not return a string")
  59             self.assert_(isinstance(open_url.readlines(), list),
  60                          "readlines did not return a list")
  61         finally:
  62             open_url.close()
  63
  64     def test_info(self):
  65         # Test 'info'.
  66         open_url = urllib.urlopen("http://www.python.org/")
  67         try:
  68             info_obj = open_url.info()
  69         finally:
  70             open_url.close()
  71             self.assert_(isinstance(info_obj, mimetools.Message),
  72                          "object returned by 'info' is not an instance of "
  73                          "mimetools.Message")
  74             self.assertEqual(info_obj.getsubtype(), "html")
  75
  76     def test_geturl(self):
  77         # Make sure same URL as opened is returned by geturl.
  78         URL = "http://www.python.org/"
  79         open_url = urllib.urlopen(URL)
  80         try:
  81             gotten_url = open_url.geturl()
  82         finally:
  83             open_url.close()
  84         self.assertEqual(gotten_url, URL)
  85
  86     def test_fileno(self):
  87         if (sys.platform in ('win32',) or
  88                 not hasattr(os, 'fdopen')):
  89             # On Windows, socket handles are not file descriptors; this
  90             # test can't pass on Windows.
  91             return
  92         # Make sure fd returned by fileno is valid.
  93         open_url = urllib.urlopen("http://www.python.org/")
  94         fd = open_url.fileno()
  95         FILE = os.fdopen(fd)
  96         try:
  97             self.assert_(FILE.read(), "reading from file created using fd "
  98                                       "returned by fileno failed")
  99         finally:
 100             FILE.close()
 101
 102     def test_bad_address(self):
 103         # Make sure proper exception is raised when connecting to a bogus
 104         # address.
 105         self.assertRaises(IOError,
 106                           # SF patch 809915:  In Sep 2003, VeriSign started
 107                           # highjacking invalid .com and .net addresses to
 108                           # boost traffic to their own site.  This test
 109                           # started failing then.  One hopes the .invalid
 110                           # domain will be spared to serve its defined
 111                           # purpose.
 112                           # urllib.urlopen, "http://www.sadflkjsasadf.com/")
 113                           urllib.urlopen, "http://www.python.invalid/")
 114
 115 class urlretrieveNetworkTests(unittest.TestCase):
 116     """Tests urllib.urlretrieve using the network."""
 117
 118     def test_basic(self):
 119         # Test basic functionality.
 120         file_location,info = urllib.urlretrieve("http://www.python.org/")
 121         self.assert_(os.path.exists(file_location), "file location returned by"
 122                         " urlretrieve is not a valid path")
 123         FILE = file(file_location)
 124         try:
 125             self.assert_(FILE.read(), "reading from the file location returned"
 126                          " by urlretrieve failed")
 127         finally:
 128             FILE.close()
 129             os.unlink(file_location)
 130
 131     def test_specified_path(self):
 132         # Make sure that specifying the location of the file to write to works.
 133         file_location,info = urllib.urlretrieve("http://www.python.org/",
 134                                                 test_support.TESTFN)
 135         self.assertEqual(file_location, test_support.TESTFN)
 136         self.assert_(os.path.exists(file_location))
 137         FILE = file(file_location)
 138         try:
 139             self.assert_(FILE.read(), "reading from temporary file failed")
 140         finally:
 141             FILE.close()
 142             os.unlink(file_location)
 143
 144     def test_header(self):
 145         # Make sure header returned as 2nd value from urlretrieve is good.
 146         file_location, header = urllib.urlretrieve("http://www.python.org/")
 147         os.unlink(file_location)
 148         self.assert_(isinstance(header, mimetools.Message),
 149                      "header is not an instance of mimetools.Message")
 150
 151
 152
 153 def test_main():
 154     test_support.requires('network')
 155     test_support.run_unittest(URLTimeoutTest,
 156                               urlopenNetworkTests,
 157                               urlretrieveNetworkTests)
 158
 159 if __name__ == "__main__":
 160     test_main()