""" Tests for kqueue wrapper. """ import errno import os import select import socket import sys import time import unittest from test import support if not hasattr(select, "kqueue"): raise unittest.SkipTest("test works only on BSD") class TestKQueue(unittest.TestCase): def test_create_queue(self): kq = select.kqueue() self.assertTrue(kq.fileno() > 0, kq.fileno()) self.assertTrue(not kq.closed) kq.close() self.assertTrue(kq.closed) self.assertRaises(ValueError, kq.fileno) def test_create_event(self): from operator import lt, le, gt, ge fd = os.open(os.devnull, os.O_WRONLY) self.addCleanup(os.close, fd) ev = select.kevent(fd) other = select.kevent(1000) self.assertEqual(ev.ident, fd) self.assertEqual(ev.filter, select.KQ_FILTER_READ) self.assertEqual(ev.flags, select.KQ_EV_ADD) self.assertEqual(ev.fflags, 0) self.assertEqual(ev.data, 0) self.assertEqual(ev.udata, 0) self.assertEqual(ev, ev) self.assertNotEqual(ev, other) self.assertTrue(ev < other) self.assertTrue(other >= ev) for op in lt, le, gt, ge: self.assertRaises(TypeError, op, ev, None) self.assertRaises(TypeError, op, ev, 1) self.assertRaises(TypeError, op, ev, "ev") ev = select.kevent(fd, select.KQ_FILTER_WRITE) self.assertEqual(ev.ident, fd) self.assertEqual(ev.filter, select.KQ_FILTER_WRITE) self.assertEqual(ev.flags, select.KQ_EV_ADD) self.assertEqual(ev.fflags, 0) self.assertEqual(ev.data, 0) self.assertEqual(ev.udata, 0) self.assertEqual(ev, ev) self.assertNotEqual(ev, other) ev = select.kevent(fd, select.KQ_FILTER_WRITE, select.KQ_EV_ONESHOT) self.assertEqual(ev.ident, fd) self.assertEqual(ev.filter, select.KQ_FILTER_WRITE) self.assertEqual(ev.flags, select.KQ_EV_ONESHOT) self.assertEqual(ev.fflags, 0) self.assertEqual(ev.data, 0) self.assertEqual(ev.udata, 0) self.assertEqual(ev, ev) self.assertNotEqual(ev, other) ev = select.kevent(1, 2, 3, 4, 5, 6) self.assertEqual(ev.ident, 1) self.assertEqual(ev.filter, 2) self.assertEqual(ev.flags, 3) self.assertEqual(ev.fflags, 4) self.assertEqual(ev.data, 5) self.assertEqual(ev.udata, 6) self.assertEqual(ev, ev) self.assertNotEqual(ev, other) bignum = sys.maxsize * 2 + 1 ev = select.kevent(bignum, 1, 2, 3, sys.maxsize, bignum) self.assertEqual(ev.ident, bignum) self.assertEqual(ev.filter, 1) self.assertEqual(ev.flags, 2) self.assertEqual(ev.fflags, 3) self.assertEqual(ev.data, sys.maxsize) self.assertEqual(ev.udata, bignum) self.assertEqual(ev, ev) self.assertNotEqual(ev, other) def test_queue_event(self): serverSocket = socket.socket() serverSocket.bind(('127.0.0.1', 0)) serverSocket.listen(1) client = socket.socket() client.setblocking(False) try: client.connect(('127.0.0.1', serverSocket.getsockname()[1])) except OSError as e: self.assertEqual(e.args[0], errno.EINPROGRESS) else: #raise AssertionError("Connect should have raised EINPROGRESS") pass # FreeBSD doesn't raise an exception here server, addr = serverSocket.accept() if sys.platform.startswith("darwin"): flags = select.KQ_EV_ADD | select.KQ_EV_ENABLE else: flags = 0 kq = select.kqueue() kq2 = select.kqueue.fromfd(kq.fileno()) ev = select.kevent(server.fileno(), select.KQ_FILTER_WRITE, select.KQ_EV_ADD | select.KQ_EV_ENABLE) kq.control([ev], 0) ev = select.kevent(server.fileno(), select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE) kq.control([ev], 0) ev = select.kevent(client.fileno(), select.KQ_FILTER_WRITE, select.KQ_EV_ADD | select.KQ_EV_ENABLE) kq2.control([ev], 0) ev = select.kevent(client.fileno(), select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE) kq2.control([ev], 0) events = kq.control(None, 4, 1) events = [(e.ident, e.filter, e.flags) for e in events] events.sort() self.assertEqual(events, [ (client.fileno(), select.KQ_FILTER_WRITE, flags), (server.fileno(), select.KQ_FILTER_WRITE, flags)]) client.send(b"Hello!") server.send(b"world!!!") # We may need to call it several times for i in range(10): events = kq.control(None, 4, 1) if len(events) == 4: break time.sleep(1.0) else: self.fail('timeout waiting for event notifications') events = [(e.ident, e.filter, e.flags) for e in events] events.sort() self.assertEqual(events, [ (client.fileno(), select.KQ_FILTER_WRITE, flags), (client.fileno(), select.KQ_FILTER_READ, flags), (server.fileno(), select.KQ_FILTER_WRITE, flags), (server.fileno(), select.KQ_FILTER_READ, flags)]) # Remove completely client, and server read part ev = select.kevent(client.fileno(), select.KQ_FILTER_WRITE, select.KQ_EV_DELETE) kq.control([ev], 0) ev = select.kevent(client.fileno(), select.KQ_FILTER_READ, select.KQ_EV_DELETE) kq.control([ev], 0) ev = select.kevent(server.fileno(), select.KQ_FILTER_READ, select.KQ_EV_DELETE) kq.control([ev], 0, 0) events = kq.control([], 4, 0.99) events = [(e.ident, e.filter, e.flags) for e in events] events.sort() self.assertEqual(events, [ (server.fileno(), select.KQ_FILTER_WRITE, flags)]) client.close() server.close() serverSocket.close() def testPair(self): kq = select.kqueue() a, b = socket.socketpair() a.send(b'foo') event1 = select.kevent(a, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE) event2 = select.kevent(b, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE) r = kq.control([event1, event2], 1, 1) self.assertTrue(r) self.assertFalse(r[0].flags & select.KQ_EV_ERROR) self.assertEqual(b.recv(r[0].data), b'foo') a.close() b.close() kq.close() def test_main(): support.run_unittest(TestKQueue) if __name__ == "__main__": test_main()