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52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
from __future__ import absolute_import, division, print_function, with_statement
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import os
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import socket
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import sys
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from tornado.testing import bind_unused_port
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# Encapsulate the choice of unittest or unittest2 here.
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# To be used as 'from tornado.test.util import unittest'.
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if sys.version_info < (2, 7):
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# In py26, we must always use unittest2.
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import unittest2 as unittest
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else:
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# Otherwise, use whichever version of unittest was imported in
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# tornado.testing.
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from tornado.testing import unittest
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skipIfNonUnix = unittest.skipIf(os.name != 'posix' or sys.platform == 'cygwin',
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"non-unix platform")
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# travis-ci.org runs our tests in an overworked virtual machine, which makes
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# timing-related tests unreliable.
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skipOnTravis = unittest.skipIf('TRAVIS' in os.environ,
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'timing tests unreliable on travis')
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# Set the environment variable NO_NETWORK=1 to disable any tests that
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# depend on an external network.
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skipIfNoNetwork = unittest.skipIf('NO_NETWORK' in os.environ,
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'network access disabled')
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skipIfNoIPv6 = unittest.skipIf(not socket.has_ipv6, 'ipv6 support not present')
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def refusing_port():
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"""Returns a local port number that will refuse all connections.
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Return value is (cleanup_func, port); the cleanup function
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must be called to free the port to be reused.
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"""
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# On travis-ci, port numbers are reassigned frequently. To avoid
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# collisions with other tests, we use an open client-side socket's
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# ephemeral port number to ensure that nothing can listen on that
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# port.
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server_socket, port = bind_unused_port()
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server_socket.setblocking(1)
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client_socket = socket.socket()
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client_socket.connect(("127.0.0.1", port))
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conn, client_addr = server_socket.accept()
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conn.close()
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server_socket.close()
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return (client_socket.close, client_addr[1])
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