424 lines
13 KiB
Python
424 lines
13 KiB
Python
import asyncore
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import unittest
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import select
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import os
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import socket
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import threading
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import sys
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import time
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from test import test_support
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from test.test_support import TESTFN, run_unittest, unlink
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from StringIO import StringIO
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HOST = test_support.HOST
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class dummysocket:
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def __init__(self):
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self.closed = False
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def close(self):
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self.closed = True
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def fileno(self):
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return 42
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class dummychannel:
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def __init__(self):
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self.socket = dummysocket()
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def close(self):
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self.socket.close()
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class exitingdummy:
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def __init__(self):
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pass
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def handle_read_event(self):
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raise asyncore.ExitNow()
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handle_write_event = handle_read_event
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handle_close = handle_read_event
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handle_expt_event = handle_read_event
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class crashingdummy:
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def __init__(self):
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self.error_handled = False
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def handle_read_event(self):
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raise Exception()
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handle_write_event = handle_read_event
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handle_close = handle_read_event
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handle_expt_event = handle_read_event
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def handle_error(self):
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self.error_handled = True
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# used when testing senders; just collects what it gets until newline is sent
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def capture_server(evt, buf, serv):
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try:
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serv.listen(5)
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conn, addr = serv.accept()
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except socket.timeout:
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pass
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else:
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n = 200
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while n > 0:
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r, w, e = select.select([conn], [], [])
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if r:
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data = conn.recv(10)
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# keep everything except for the newline terminator
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buf.write(data.replace('\n', ''))
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if '\n' in data:
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break
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n -= 1
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time.sleep(0.01)
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conn.close()
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finally:
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serv.close()
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evt.set()
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class HelperFunctionTests(unittest.TestCase):
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def test_readwriteexc(self):
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# Check exception handling behavior of read, write and _exception
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# check that ExitNow exceptions in the object handler method
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# bubbles all the way up through asyncore read/write/_exception calls
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tr1 = exitingdummy()
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self.assertRaises(asyncore.ExitNow, asyncore.read, tr1)
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self.assertRaises(asyncore.ExitNow, asyncore.write, tr1)
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self.assertRaises(asyncore.ExitNow, asyncore._exception, tr1)
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# check that an exception other than ExitNow in the object handler
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# method causes the handle_error method to get called
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tr2 = crashingdummy()
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asyncore.read(tr2)
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self.assertEqual(tr2.error_handled, True)
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tr2 = crashingdummy()
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asyncore.write(tr2)
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self.assertEqual(tr2.error_handled, True)
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tr2 = crashingdummy()
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asyncore._exception(tr2)
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self.assertEqual(tr2.error_handled, True)
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# asyncore.readwrite uses constants in the select module that
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# are not present in Windows systems (see this thread:
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# http://mail.python.org/pipermail/python-list/2001-October/109973.html)
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# These constants should be present as long as poll is available
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if hasattr(select, 'poll'):
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def test_readwrite(self):
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# Check that correct methods are called by readwrite()
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class testobj:
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def __init__(self):
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self.read = False
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self.write = False
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self.closed = False
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self.expt = False
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def handle_read_event(self):
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self.read = True
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def handle_write_event(self):
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self.write = True
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def handle_close(self):
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self.closed = True
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def handle_expt_event(self):
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self.expt = True
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def handle_error(self):
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self.error_handled = True
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for flag in (select.POLLIN, select.POLLPRI):
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tobj = testobj()
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self.assertEqual(tobj.read, False)
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asyncore.readwrite(tobj, flag)
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self.assertEqual(tobj.read, True)
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# check that ExitNow exceptions in the object handler method
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# bubbles all the way up through asyncore readwrite call
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tr1 = exitingdummy()
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self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag)
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# check that an exception other than ExitNow in the object handler
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# method causes the handle_error method to get called
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tr2 = crashingdummy()
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asyncore.readwrite(tr2, flag)
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self.assertEqual(tr2.error_handled, True)
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tobj = testobj()
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self.assertEqual(tobj.write, False)
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asyncore.readwrite(tobj, select.POLLOUT)
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self.assertEqual(tobj.write, True)
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# check that ExitNow exceptions in the object handler method
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# bubbles all the way up through asyncore readwrite call
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tr1 = exitingdummy()
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self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1,
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select.POLLOUT)
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# check that an exception other than ExitNow in the object handler
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# method causes the handle_error method to get called
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tr2 = crashingdummy()
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asyncore.readwrite(tr2, select.POLLOUT)
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self.assertEqual(tr2.error_handled, True)
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for flag in (select.POLLERR, select.POLLHUP, select.POLLNVAL):
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tobj = testobj()
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self.assertEqual((tobj.expt, tobj.closed)[flag == select.POLLHUP], False)
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asyncore.readwrite(tobj, flag)
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self.assertEqual((tobj.expt, tobj.closed)[flag == select.POLLHUP], True)
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# check that ExitNow exceptions in the object handler method
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# bubbles all the way up through asyncore readwrite calls
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tr1 = exitingdummy()
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self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag)
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# check that an exception other than ExitNow in the object handler
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# method causes the handle_error method to get called
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tr2 = crashingdummy()
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asyncore.readwrite(tr2, flag)
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self.assertEqual(tr2.error_handled, True)
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def test_closeall(self):
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self.closeall_check(False)
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def test_closeall_default(self):
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self.closeall_check(True)
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def closeall_check(self, usedefault):
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# Check that close_all() closes everything in a given map
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l = []
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testmap = {}
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for i in range(10):
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c = dummychannel()
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l.append(c)
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self.assertEqual(c.socket.closed, False)
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testmap[i] = c
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if usedefault:
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socketmap = asyncore.socket_map
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try:
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asyncore.socket_map = testmap
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asyncore.close_all()
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finally:
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testmap, asyncore.socket_map = asyncore.socket_map, socketmap
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else:
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asyncore.close_all(testmap)
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self.assertEqual(len(testmap), 0)
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for c in l:
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self.assertEqual(c.socket.closed, True)
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def test_compact_traceback(self):
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try:
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raise Exception("I don't like spam!")
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except:
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real_t, real_v, real_tb = sys.exc_info()
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r = asyncore.compact_traceback()
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else:
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self.fail("Expected exception")
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(f, function, line), t, v, info = r
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self.assertEqual(os.path.split(f)[-1], 'test_asyncore.py')
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self.assertEqual(function, 'test_compact_traceback')
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self.assertEqual(t, real_t)
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self.assertEqual(v, real_v)
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self.assertEqual(info, '[%s|%s|%s]' % (f, function, line))
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class DispatcherTests(unittest.TestCase):
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def setUp(self):
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pass
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def tearDown(self):
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asyncore.close_all()
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def test_basic(self):
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d = asyncore.dispatcher()
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self.assertEqual(d.readable(), True)
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self.assertEqual(d.writable(), True)
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def test_repr(self):
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d = asyncore.dispatcher()
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self.assertEqual(repr(d), '<asyncore.dispatcher at %#x>' % id(d))
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def test_log(self):
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d = asyncore.dispatcher()
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# capture output of dispatcher.log() (to stderr)
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fp = StringIO()
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stderr = sys.stderr
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l1 = "Lovely spam! Wonderful spam!"
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l2 = "I don't like spam!"
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try:
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sys.stderr = fp
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d.log(l1)
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d.log(l2)
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finally:
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sys.stderr = stderr
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lines = fp.getvalue().splitlines()
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self.assertEquals(lines, ['log: %s' % l1, 'log: %s' % l2])
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def test_log_info(self):
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d = asyncore.dispatcher()
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# capture output of dispatcher.log_info() (to stdout via print)
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fp = StringIO()
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stdout = sys.stdout
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l1 = "Have you got anything without spam?"
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l2 = "Why can't she have egg bacon spam and sausage?"
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l3 = "THAT'S got spam in it!"
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try:
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sys.stdout = fp
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d.log_info(l1, 'EGGS')
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d.log_info(l2)
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d.log_info(l3, 'SPAM')
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finally:
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sys.stdout = stdout
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lines = fp.getvalue().splitlines()
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if __debug__:
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expected = ['EGGS: %s' % l1, 'info: %s' % l2, 'SPAM: %s' % l3]
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else:
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expected = ['EGGS: %s' % l1, 'SPAM: %s' % l3]
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self.assertEquals(lines, expected)
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def test_unhandled(self):
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d = asyncore.dispatcher()
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# capture output of dispatcher.log_info() (to stdout via print)
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fp = StringIO()
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stdout = sys.stdout
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try:
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sys.stdout = fp
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d.handle_expt()
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d.handle_read()
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d.handle_write()
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d.handle_connect()
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d.handle_accept()
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finally:
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sys.stdout = stdout
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lines = fp.getvalue().splitlines()
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expected = ['warning: unhandled exception',
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'warning: unhandled read event',
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'warning: unhandled write event',
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'warning: unhandled connect event',
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'warning: unhandled accept event']
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self.assertEquals(lines, expected)
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class dispatcherwithsend_noread(asyncore.dispatcher_with_send):
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def readable(self):
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return False
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def handle_connect(self):
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pass
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class DispatcherWithSendTests(unittest.TestCase):
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usepoll = False
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def setUp(self):
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pass
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def tearDown(self):
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asyncore.close_all()
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def test_send(self):
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self.evt = threading.Event()
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.settimeout(3)
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self.port = test_support.bind_port(self.sock)
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cap = StringIO()
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args = (self.evt, cap, self.sock)
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threading.Thread(target=capture_server, args=args).start()
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# wait a little longer for the server to initialize (it sometimes
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# refuses connections on slow machines without this wait)
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time.sleep(0.2)
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data = "Suppose there isn't a 16-ton weight?"
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d = dispatcherwithsend_noread()
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d.create_socket(socket.AF_INET, socket.SOCK_STREAM)
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d.connect((HOST, self.port))
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# give time for socket to connect
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time.sleep(0.1)
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d.send(data)
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d.send(data)
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d.send('\n')
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n = 1000
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while d.out_buffer and n > 0:
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asyncore.poll()
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n -= 1
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self.evt.wait()
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self.assertEqual(cap.getvalue(), data*2)
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class DispatcherWithSendTests_UsePoll(DispatcherWithSendTests):
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usepoll = True
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if hasattr(asyncore, 'file_wrapper'):
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class FileWrapperTest(unittest.TestCase):
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def setUp(self):
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self.d = "It's not dead, it's sleeping!"
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file(TESTFN, 'w').write(self.d)
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def tearDown(self):
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unlink(TESTFN)
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def test_recv(self):
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fd = os.open(TESTFN, os.O_RDONLY)
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w = asyncore.file_wrapper(fd)
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os.close(fd)
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self.assertNotEqual(w.fd, fd)
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self.assertNotEqual(w.fileno(), fd)
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self.assertEqual(w.recv(13), "It's not dead")
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self.assertEqual(w.read(6), ", it's")
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w.close()
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self.assertRaises(OSError, w.read, 1)
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def test_send(self):
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d1 = "Come again?"
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d2 = "I want to buy some cheese."
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fd = os.open(TESTFN, os.O_WRONLY | os.O_APPEND)
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w = asyncore.file_wrapper(fd)
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os.close(fd)
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w.write(d1)
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w.send(d2)
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w.close()
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self.assertEqual(file(TESTFN).read(), self.d + d1 + d2)
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def test_main():
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tests = [HelperFunctionTests, DispatcherTests, DispatcherWithSendTests,
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DispatcherWithSendTests_UsePoll]
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if hasattr(asyncore, 'file_wrapper'):
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tests.append(FileWrapperTest)
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run_unittest(*tests)
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if __name__ == "__main__":
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test_main()
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