diff --git a/Lib/test/test_asyncore.py b/Lib/test/test_asyncore.py
new file mode 100644
index 0000000..9ebb218
--- /dev/null
+++ b/Lib/test/test_asyncore.py
@@ -0,0 +1,370 @@
+import asyncore
+import unittest
+import select
+import os
+import socket
+import threading
+import sys
+import time
+
+from test import test_support
+from test.test_support import TESTFN, run_unittest, unlink
+from StringIO import StringIO
+
+HOST = "127.0.0.1"
+PORT = 54322
+
+class dummysocket:
+    def __init__(self):
+        self.closed = False
+
+    def close(self):
+        self.closed = True
+
+    def fileno(self):
+        return 42
+
+class dummychannel:
+    def __init__(self):
+        self.socket = dummysocket()
+
+class exitingdummy:
+    def __init__(self):
+        pass
+
+    def handle_read_event(self):
+        raise asyncore.ExitNow()
+
+    handle_write_event = handle_read_event
+    handle_expt_event = handle_read_event
+
+class crashingdummy:
+    def __init__(self):
+        self.error_handled = False
+
+    def handle_read_event(self):
+        raise Exception()
+
+    handle_write_event = handle_read_event
+    handle_expt_event = handle_read_event
+
+    def handle_error(self):
+        self.error_handled = True
+
+# used when testing senders; just collects what it gets until newline is sent
+class capture_server(threading.Thread):
+    def run(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        global PORT
+        PORT = test_support.bind_port(sock, HOST, PORT)
+        sock.listen(1)
+        conn, client = sock.accept()
+        self.captured = ""
+        while 1:
+            data = conn.recv(10)
+            if '\n' in data:
+                break
+            self.captured = self.captured + data
+
+        conn.close()
+        sock.close()
+
+
+class HelperFunctionTests(unittest.TestCase):
+    def test_readwriteexc(self):
+        # Check exception handling behavior of read, write and _exception
+
+        # check that ExitNow exceptions in the object handler method
+        # bubbles all the way up through asyncore read/write/_exception calls
+        tr1 = exitingdummy()
+        self.assertRaises(asyncore.ExitNow, asyncore.read, tr1)
+        self.assertRaises(asyncore.ExitNow, asyncore.write, tr1)
+        self.assertRaises(asyncore.ExitNow, asyncore._exception, tr1)
+
+        # check that an exception other than ExitNow in the object handler
+        # method causes the handle_error method to get called
+        tr2 = crashingdummy()
+        asyncore.read(tr2)
+        self.assertEqual(tr2.error_handled, True)
+
+        tr2 = crashingdummy()
+        asyncore.write(tr2)
+        self.assertEqual(tr2.error_handled, True)
+
+        tr2 = crashingdummy()
+        asyncore._exception(tr2)
+        self.assertEqual(tr2.error_handled, True)
+
+    def test_readwrite(self):
+        # Check that correct methods are called by readwrite()
+
+        class testobj:
+            def __init__(self):
+                self.read = False
+                self.write = False
+                self.expt = False
+
+            def handle_read_event(self):
+                self.read = True
+
+            def handle_write_event(self):
+                self.write = True
+
+            def handle_expt_event(self):
+                self.expt = True
+
+            def handle_error(self):
+                self.error_handled = True
+
+        for flag in (select.POLLIN, select.POLLPRI):
+            tobj = testobj()
+            self.assertEqual(tobj.read, False)
+            asyncore.readwrite(tobj, flag)
+            self.assertEqual(tobj.read, True)
+
+            # check that ExitNow exceptions in the object handler method
+            # bubbles all the way up through asyncore readwrite call
+            tr1 = exitingdummy()
+            self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag)
+
+            # check that an exception other than ExitNow in the object handler
+            # method causes the handle_error method to get called
+            tr2 = crashingdummy()
+            asyncore.readwrite(tr2, flag)
+            self.assertEqual(tr2.error_handled, True)
+
+        tobj = testobj()
+        self.assertEqual(tobj.write, False)
+        asyncore.readwrite(tobj, select.POLLOUT)
+        self.assertEqual(tobj.write, True)
+
+        # check that ExitNow exceptions in the object handler method
+        # bubbles all the way up through asyncore readwrite call
+        tr1 = exitingdummy()
+        self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1,
+                          select.POLLOUT)
+
+        # check that an exception other than ExitNow in the object handler
+        # method causes the handle_error method to get called
+        tr2 = crashingdummy()
+        asyncore.readwrite(tr2, select.POLLOUT)
+        self.assertEqual(tr2.error_handled, True)
+
+        for flag in (select.POLLERR, select.POLLHUP, select.POLLNVAL):
+            tobj = testobj()
+            self.assertEqual(tobj.expt, False)
+            asyncore.readwrite(tobj, flag)
+            self.assertEqual(tobj.expt, True)
+
+            # check that ExitNow exceptions in the object handler method
+            # bubbles all the way up through asyncore readwrite calls
+            tr1 = exitingdummy()
+            self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag)
+
+            # check that an exception other than ExitNow in the object handler
+            # method causes the handle_error method to get called
+            tr2 = crashingdummy()
+            asyncore.readwrite(tr2, flag)
+            self.assertEqual(tr2.error_handled, True)
+
+    def test_closeall(self):
+        self.closeall_check(False)
+
+    def test_closeall_default(self):
+        self.closeall_check(True)
+
+    def closeall_check(self, usedefault):
+        # Check that close_all() closes everything in a given map
+
+        l = []
+        testmap = {}
+        for i in range(10):
+            c = dummychannel()
+            l.append(c)
+            self.assertEqual(c.socket.closed, False)
+            testmap[i] = c
+
+        if usedefault:
+            socketmap = asyncore.socket_map
+            try:
+                asyncore.socket_map = testmap
+                asyncore.close_all()
+            finally:
+                testmap, asyncore.socket_map = asyncore.socket_map, socketmap
+        else:
+            asyncore.close_all(testmap)
+
+        self.assertEqual(len(testmap), 0)
+
+        for c in l:
+            self.assertEqual(c.socket.closed, True)
+
+    def test_compact_traceback(self):
+        try:
+            raise Exception("I don't like spam!")
+        except:
+            real_t, real_v, real_tb = sys.exc_info()
+            r = asyncore.compact_traceback()
+        else:
+            self.fail("Expected exception")
+
+        (f, function, line), t, v, info = r
+        self.assertEqual(os.path.split(f)[-1], 'test_asyncore.py')
+        self.assertEqual(function, 'test_compact_traceback')
+        self.assertEqual(t, real_t)
+        self.assertEqual(v, real_v)
+        self.assertEqual(info, '[%s|%s|%s]' % (f, function, line))
+
+
+class DispatcherTests(unittest.TestCase):
+    def test_basic(self):
+        d = asyncore.dispatcher()
+        self.assertEqual(d.readable(), True)
+        self.assertEqual(d.writable(), True)
+
+    def test_repr(self):
+        d = asyncore.dispatcher()
+        self.assertEqual(repr(d), '<asyncore.dispatcher at %#x>' % id(d))
+
+    def test_log(self):
+        d = asyncore.dispatcher()
+
+        # capture output of dispatcher.log() (to stderr)
+        fp = StringIO()
+        stderr = sys.stderr
+        l1 = "Lovely spam! Wonderful spam!"
+        l2 = "I don't like spam!"
+        try:
+            sys.stderr = fp
+            d.log(l1)
+            d.log(l2)
+        finally:
+            sys.stderr = stderr
+
+        lines = fp.getvalue().splitlines()
+        self.assertEquals(lines, ['log: %s' % l1, 'log: %s' % l2])
+
+    def test_log_info(self):
+        d = asyncore.dispatcher()
+
+        # capture output of dispatcher.log_info() (to stdout via print)
+        fp = StringIO()
+        stdout = sys.stdout
+        l1 = "Have you got anything without spam?"
+        l2 = "Why can't she have egg bacon spam and sausage?"
+        l3 = "THAT'S got spam in it!"
+        try:
+            sys.stdout = fp
+            d.log_info(l1, 'EGGS')
+            d.log_info(l2)
+            d.log_info(l3, 'SPAM')
+        finally:
+            sys.stdout = stdout
+
+        lines = fp.getvalue().splitlines()
+        expected = ['EGGS: %s' % l1, 'info: %s' % l2, 'SPAM: %s' % l3]
+        self.assertEquals(lines, expected)
+
+    def test_unhandled(self):
+        d = asyncore.dispatcher()
+
+        # capture output of dispatcher.log_info() (to stdout via print)
+        fp = StringIO()
+        stdout = sys.stdout
+        try:
+            sys.stdout = fp
+            d.handle_expt()
+            d.handle_read()
+            d.handle_write()
+            d.handle_connect()
+            d.handle_accept()
+        finally:
+            sys.stdout = stdout
+
+        lines = fp.getvalue().splitlines()
+        expected = ['warning: unhandled exception',
+                    'warning: unhandled read event',
+                    'warning: unhandled write event',
+                    'warning: unhandled connect event',
+                    'warning: unhandled accept event']
+        self.assertEquals(lines, expected)
+
+
+
+class dispatcherwithsend_noread(asyncore.dispatcher_with_send):
+    def readable(self):
+        return False
+
+    def handle_connect(self):
+        pass
+
+class DispatcherWithSendTests(unittest.TestCase):
+    usepoll = False
+
+    def test_send(self):
+        s = capture_server()
+        s.start()
+        time.sleep(1) # Give server time to initialize
+
+        data = "Suppose there isn't a 16-ton weight?"*100
+        d = dispatcherwithsend_noread()
+        d.create_socket(socket.AF_INET, socket.SOCK_STREAM)
+        d.connect((HOST, PORT))
+        d.send(data)
+        d.send('\n')
+
+        while d.out_buffer:
+            asyncore.poll()
+
+        s.stopit = True
+        s.join()
+
+        self.assertEqual(s.captured, data)
+
+
+class DispatcherWithSendTests_UsePoll(DispatcherWithSendTests):
+    usepoll = True
+
+if hasattr(asyncore, 'file_wrapper'):
+    class FileWrapperTest(unittest.TestCase):
+        def setUp(self):
+            self.d = "It's not dead, it's sleeping!"
+            file(TESTFN, 'w').write(self.d)
+
+        def tearDown(self):
+            unlink(TESTFN)
+
+        def test_recv(self):
+            fd = os.open(TESTFN, os.O_RDONLY)
+            w = asyncore.file_wrapper(fd)
+
+            self.assertEqual(w.fd, fd)
+            self.assertEqual(w.fileno(), fd)
+            self.assertEqual(w.recv(13), "It's not dead")
+            self.assertEqual(w.read(6), ", it's")
+            w.close()
+            self.assertRaises(OSError, w.read, 1)
+
+        def test_send(self):
+            d1 = "Come again?"
+            d2 = "I want to buy some cheese."
+            fd = os.open(TESTFN, os.O_WRONLY | os.O_APPEND)
+            w = asyncore.file_wrapper(fd)
+
+            w.write(d1)
+            w.send(d2)
+            w.close()
+            self.assertEqual(file(TESTFN).read(), self.d + d1 + d2)
+
+
+def test_main():
+    tests = [HelperFunctionTests, DispatcherTests, DispatcherWithSendTests,
+             DispatcherWithSendTests_UsePoll]
+    if hasattr(asyncore, 'file_wrapper'):
+        tests.append(FileWrapperTest)
+
+    run_unittest(*tests)
+
+if __name__ == "__main__":
+    test_main()