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//usr/lib/python2.4/test/test_socket.py
#! /usr/bin/env python2.4 import unittest from test import test_support import socket import select import time import thread, threading import Queue import sys from weakref import proxy PORT = 50007 HOST = 'localhost' MSG = 'Michael Gilfix was here\n' class SocketTCPTest(unittest.TestCase): def setUp(self): self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) self.serv.bind((HOST, PORT)) self.serv.listen(1) def tearDown(self): self.serv.close() self.serv = None class SocketUDPTest(unittest.TestCase): def setUp(self): self.serv = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) self.serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) self.serv.bind((HOST, PORT)) def tearDown(self): self.serv.close() self.serv = None class ThreadableTest: """Threadable Test class The ThreadableTest class makes it easy to create a threaded client/server pair from an existing unit test. To create a new threaded class from an existing unit test, use multiple inheritance: class NewClass (OldClass, ThreadableTest): pass This class defines two new fixture functions with obvious purposes for overriding: clientSetUp () clientTearDown () Any new test functions within the class must then define tests in pairs, where the test name is preceeded with a '_' to indicate the client portion of the test. Ex: def testFoo(self): # Server portion def _testFoo(self): # Client portion Any exceptions raised by the clients during their tests are caught and transferred to the main thread to alert the testing framework. Note, the server setup function cannot call any blocking functions that rely on the client thread during setup, unless serverExplicityReady() is called just before the blocking call (such as in setting up a client/server connection and performing the accept() in setUp(). """ def __init__(self): # Swap the true setup function self.__setUp = self.setUp self.__tearDown = self.tearDown self.setUp = self._setUp self.tearDown = self._tearDown def serverExplicitReady(self): """This method allows the server to explicitly indicate that it wants the client thread to proceed. This is useful if the server is about to execute a blocking routine that is dependent upon the client thread during its setup routine.""" self.server_ready.set() def _setUp(self): self.server_ready = threading.Event() self.client_ready = threading.Event() self.done = threading.Event() self.queue = Queue.Queue(1) # Do some munging to start the client test. methodname = self.id() i = methodname.rfind('.') methodname = methodname[i+1:] test_method = getattr(self, '_' + methodname) self.client_thread = thread.start_new_thread( self.clientRun, (test_method,)) self.__setUp() if not self.server_ready.isSet(): self.server_ready.set() self.client_ready.wait() def _tearDown(self): self.__tearDown() self.done.wait() if not self.queue.empty(): msg = self.queue.get() self.fail(msg) def clientRun(self, test_func): self.server_ready.wait() self.client_ready.set() self.clientSetUp() if not callable(test_func): raise TypeError, "test_func must be a callable function" try: test_func() except Exception, strerror: self.queue.put(strerror) self.clientTearDown() def clientSetUp(self): raise NotImplementedError, "clientSetUp must be implemented." def clientTearDown(self): self.done.set() thread.exit() class ThreadedTCPSocketTest(SocketTCPTest, ThreadableTest): def __init__(self, methodName='runTest'): SocketTCPTest.__init__(self, methodName=methodName) ThreadableTest.__init__(self) def clientSetUp(self): self.cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM) def clientTearDown(self): self.cli.close() self.cli = None ThreadableTest.clientTearDown(self) class ThreadedUDPSocketTest(SocketUDPTest, ThreadableTest): def __init__(self, methodName='runTest'): SocketUDPTest.__init__(self, methodName=methodName) ThreadableTest.__init__(self) def clientSetUp(self): self.cli = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) class SocketConnectedTest(ThreadedTCPSocketTest): def __init__(self, methodName='runTest'): ThreadedTCPSocketTest.__init__(self, methodName=methodName) def setUp(self): ThreadedTCPSocketTest.setUp(self) # Indicate explicitly we're ready for the client thread to # proceed and then perform the blocking call to accept self.serverExplicitReady() conn, addr = self.serv.accept() self.cli_conn = conn def tearDown(self): self.cli_conn.close() self.cli_conn = None ThreadedTCPSocketTest.tearDown(self) def clientSetUp(self): ThreadedTCPSocketTest.clientSetUp(self) self.cli.connect((HOST, PORT)) self.serv_conn = self.cli def clientTearDown(self): self.serv_conn.close() self.serv_conn = None ThreadedTCPSocketTest.clientTearDown(self) class SocketPairTest(unittest.TestCase, ThreadableTest): def __init__(self, methodName='runTest'): unittest.TestCase.__init__(self, methodName=methodName) ThreadableTest.__init__(self) def setUp(self): self.serv, self.cli = socket.socketpair() def tearDown(self): self.serv.close() self.serv = None def clientSetUp(self): pass def clientTearDown(self): self.cli.close() self.cli = None ThreadableTest.clientTearDown(self) ####################################################################### ## Begin Tests class GeneralModuleTests(unittest.TestCase): def test_weakref(self): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) p = proxy(s) self.assertEqual(p.fileno(), s.fileno()) s.close() s = None try: p.fileno() except ReferenceError: pass else: self.fail('Socket proxy still exists') def testSocketError(self): # Testing socket module exceptions def raise_error(*args, **kwargs): raise socket.error def raise_herror(*args, **kwargs): raise socket.herror def raise_gaierror(*args, **kwargs): raise socket.gaierror self.failUnlessRaises(socket.error, raise_error, "Error raising socket exception.") self.failUnlessRaises(socket.error, raise_herror, "Error raising socket exception.") self.failUnlessRaises(socket.error, raise_gaierror, "Error raising socket exception.") def testCrucialConstants(self): # Testing for mission critical constants socket.AF_INET socket.SOCK_STREAM socket.SOCK_DGRAM socket.SOCK_RAW socket.SOCK_RDM socket.SOCK_SEQPACKET socket.SOL_SOCKET socket.SO_REUSEADDR def testHostnameRes(self): # Testing hostname resolution mechanisms hostname = socket.gethostname() try: ip = socket.gethostbyname(hostname) except socket.error: # Probably name lookup wasn't set up right; skip this test return self.assert_(ip.find('.') >= 0, "Error resolving host to ip.") try: hname, aliases, ipaddrs = socket.gethostbyaddr(ip) except socket.error: # Probably a similar problem as above; skip this test return all_host_names = [hostname, hname] + aliases fqhn = socket.getfqdn() if not fqhn in all_host_names: self.fail("Error testing host resolution mechanisms.") def testRefCountGetNameInfo(self): # Testing reference count for getnameinfo import sys if hasattr(sys, "getrefcount"): try: # On some versions, this loses a reference orig = sys.getrefcount(__name__) socket.getnameinfo(__name__,0) except SystemError: if sys.getrefcount(__name__) <> orig: self.fail("socket.getnameinfo loses a reference") def testInterpreterCrash(self): # Making sure getnameinfo doesn't crash the interpreter try: # On some versions, this crashes the interpreter. socket.getnameinfo(('x', 0, 0, 0), 0) except socket.error: pass def testNtoH(self): # This just checks that htons etc. are their own inverse, # when looking at the lower 16 or 32 bits. sizes = {socket.htonl: 32, socket.ntohl: 32, socket.htons: 16, socket.ntohs: 16} for func, size in sizes.items(): mask = (1L<<size) - 1 for i in (0, 1, 0xffff, ~0xffff, 2, 0x01234567, 0x76543210): self.assertEqual(i & mask, func(func(i&mask)) & mask) swapped = func(mask) self.assertEqual(swapped & mask, mask) self.assertRaises(OverflowError, func, 1L<<34) def testGetServBy(self): eq = self.assertEqual # Find one service that exists, then check all the related interfaces. # I've ordered this by protocols that have both a tcp and udp # protocol, at least for modern Linuxes. if sys.platform in ('linux2', 'freebsd4', 'freebsd5', 'freebsd6', 'darwin'): # avoid the 'echo' service on this platform, as there is an # assumption breaking non-standard port/protocol entry services = ('daytime', 'qotd', 'domain') else: services = ('echo', 'daytime', 'domain') for service in services: try: port = socket.getservbyname(service, 'tcp') break except socket.error: pass else: raise socket.error # Try same call with optional protocol omitted port2 = socket.getservbyname(service) eq(port, port2) # Try udp, but don't barf it it doesn't exist try: udpport = socket.getservbyname(service, 'udp') except socket.error: udpport = None else: eq(udpport, port) # Now make sure the lookup by port returns the same service name eq(socket.getservbyport(port2), service) eq(socket.getservbyport(port, 'tcp'), service) if udpport is not None: eq(socket.getservbyport(udpport, 'udp'), service) def testDefaultTimeout(self): # Testing default timeout # The default timeout should initially be None self.assertEqual(socket.getdefaulttimeout(), None) s = socket.socket() self.assertEqual(s.gettimeout(), None) s.close() # Set the default timeout to 10, and see if it propagates socket.setdefaulttimeout(10) self.assertEqual(socket.getdefaulttimeout(), 10) s = socket.socket() self.assertEqual(s.gettimeout(), 10) s.close() # Reset the default timeout to None, and see if it propagates socket.setdefaulttimeout(None) self.assertEqual(socket.getdefaulttimeout(), None) s = socket.socket() self.assertEqual(s.gettimeout(), None) s.close() # Check that setting it to an invalid value raises ValueError self.assertRaises(ValueError, socket.setdefaulttimeout, -1) # Check that setting it to an invalid type raises TypeError self.assertRaises(TypeError, socket.setdefaulttimeout, "spam") def testIPv4toString(self): if not hasattr(socket, 'inet_pton'): return # No inet_pton() on this platform from socket import inet_aton as f, inet_pton, AF_INET g = lambda a: inet_pton(AF_INET, a) self.assertEquals('\x00\x00\x00\x00', f('0.0.0.0')) self.assertEquals('\xff\x00\xff\x00', f('255.0.255.0')) self.assertEquals('\xaa\xaa\xaa\xaa', f('170.170.170.170')) self.assertEquals('\x01\x02\x03\x04', f('1.2.3.4')) self.assertEquals('\xff\xff\xff\xff', f('255.255.255.255')) self.assertEquals('\x00\x00\x00\x00', g('0.0.0.0')) self.assertEquals('\xff\x00\xff\x00', g('255.0.255.0')) self.assertEquals('\xaa\xaa\xaa\xaa', g('170.170.170.170')) self.assertEquals('\xff\xff\xff\xff', g('255.255.255.255')) def testIPv6toString(self): if not hasattr(socket, 'inet_pton'): return # No inet_pton() on this platform try: from socket import inet_pton, AF_INET6, has_ipv6 if not has_ipv6: return except ImportError: return f = lambda a: inet_pton(AF_INET6, a) self.assertEquals('\x00' * 16, f('::')) self.assertEquals('\x00' * 16, f('0::0')) self.assertEquals('\x00\x01' + '\x00' * 14, f('1::')) self.assertEquals( '\x45\xef\x76\xcb\x00\x1a\x56\xef\xaf\xeb\x0b\xac\x19\x24\xae\xae', f('45ef:76cb:1a:56ef:afeb:bac:1924:aeae') ) def testStringToIPv4(self): if not hasattr(socket, 'inet_ntop'): return # No inet_ntop() on this platform from socket import inet_ntoa as f, inet_ntop, AF_INET g = lambda a: inet_ntop(AF_INET, a) self.assertEquals('1.0.1.0', f('\x01\x00\x01\x00')) self.assertEquals('170.85.170.85', f('\xaa\x55\xaa\x55')) self.assertEquals('255.255.255.255', f('\xff\xff\xff\xff')) self.assertEquals('1.2.3.4', f('\x01\x02\x03\x04')) self.assertEquals('1.0.1.0', g('\x01\x00\x01\x00')) self.assertEquals('170.85.170.85', g('\xaa\x55\xaa\x55')) self.assertEquals('255.255.255.255', g('\xff\xff\xff\xff')) def testStringToIPv6(self): if not hasattr(socket, 'inet_ntop'): return # No inet_ntop() on this platform try: from socket import inet_ntop, AF_INET6, has_ipv6 if not has_ipv6: return except ImportError: return f = lambda a: inet_ntop(AF_INET6, a) self.assertEquals('::', f('\x00' * 16)) self.assertEquals('::1', f('\x00' * 15 + '\x01')) self.assertEquals( 'aef:b01:506:1001:ffff:9997:55:170', f('\x0a\xef\x0b\x01\x05\x06\x10\x01\xff\xff\x99\x97\x00\x55\x01\x70') ) # XXX The following don't test module-level functionality... def testSockName(self): # Testing getsockname() sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.bind(("0.0.0.0", PORT+1)) name = sock.getsockname() self.assertEqual(name, ("0.0.0.0", PORT+1)) def testGetSockOpt(self): # Testing getsockopt() # We know a socket should start without reuse==0 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) reuse = sock.getsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR) self.failIf(reuse != 0, "initial mode is reuse") def testSetSockOpt(self): # Testing setsockopt() sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) reuse = sock.getsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR) self.failIf(reuse == 0, "failed to set reuse mode") def testSendAfterClose(self): # testing send() after close() with timeout sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(1) sock.close() self.assertRaises(socket.error, sock.send, "spam") class BasicTCPTest(SocketConnectedTest): def __init__(self, methodName='runTest'): SocketConnectedTest.__init__(self, methodName=methodName) def testRecv(self): # Testing large receive over TCP msg = self.cli_conn.recv(1024) self.assertEqual(msg, MSG) def _testRecv(self): self.serv_conn.send(MSG) def testOverFlowRecv(self): # Testing receive in chunks over TCP seg1 = self.cli_conn.recv(len(MSG) - 3) seg2 = self.cli_conn.recv(1024) msg = seg1 + seg2 self.assertEqual(msg, MSG) def _testOverFlowRecv(self): self.serv_conn.send(MSG) def testRecvFrom(self): # Testing large recvfrom() over TCP msg, addr = self.cli_conn.recvfrom(1024) self.assertEqual(msg, MSG) def _testRecvFrom(self): self.serv_conn.send(MSG) def testOverFlowRecvFrom(self): # Testing recvfrom() in chunks over TCP seg1, addr = self.cli_conn.recvfrom(len(MSG)-3) seg2, addr = self.cli_conn.recvfrom(1024) msg = seg1 + seg2 self.assertEqual(msg, MSG) def _testOverFlowRecvFrom(self): self.serv_conn.send(MSG) def testSendAll(self): # Testing sendall() with a 2048 byte string over TCP msg = '' while 1: read = self.cli_conn.recv(1024) if not read: break msg += read self.assertEqual(msg, 'f' * 2048) def _testSendAll(self): big_chunk = 'f' * 2048 self.serv_conn.sendall(big_chunk) def testFromFd(self): # Testing fromfd() if not hasattr(socket, "fromfd"): return # On Windows, this doesn't exist fd = self.cli_conn.fileno() sock = socket.fromfd(fd, socket.AF_INET, socket.SOCK_STREAM) msg = sock.recv(1024) self.assertEqual(msg, MSG) def _testFromFd(self): self.serv_conn.send(MSG) def testShutdown(self): # Testing shutdown() msg = self.cli_conn.recv(1024) self.assertEqual(msg, MSG) def _testShutdown(self): self.serv_conn.send(MSG) self.serv_conn.shutdown(2) class BasicUDPTest(ThreadedUDPSocketTest): def __init__(self, methodName='runTest'): ThreadedUDPSocketTest.__init__(self, methodName=methodName) def testSendtoAndRecv(self): # Testing sendto() and Recv() over UDP msg = self.serv.recv(len(MSG)) self.assertEqual(msg, MSG) def _testSendtoAndRecv(self): self.cli.sendto(MSG, 0, (HOST, PORT)) def testRecvFrom(self): # Testing recvfrom() over UDP msg, addr = self.serv.recvfrom(len(MSG)) self.assertEqual(msg, MSG) def _testRecvFrom(self): self.cli.sendto(MSG, 0, (HOST, PORT)) class BasicSocketPairTest(SocketPairTest): def __init__(self, methodName='runTest'): SocketPairTest.__init__(self, methodName=methodName) def testRecv(self): msg = self.serv.recv(1024) self.assertEqual(msg, MSG) def _testRecv(self): self.cli.send(MSG) def testSend(self): self.serv.send(MSG) def _testSend(self): msg = self.cli.recv(1024) self.assertEqual(msg, MSG) class NonBlockingTCPTests(ThreadedTCPSocketTest): def __init__(self, methodName='runTest'): ThreadedTCPSocketTest.__init__(self, methodName=methodName) def testSetBlocking(self): # Testing whether set blocking works self.serv.setblocking(0) start = time.time() try: self.serv.accept() except socket.error: pass end = time.time() self.assert_((end - start) < 1.0, "Error setting non-blocking mode.") def _testSetBlocking(self): pass def testAccept(self): # Testing non-blocking accept self.serv.setblocking(0) try: conn, addr = self.serv.accept() except socket.error: pass else: self.fail("Error trying to do non-blocking accept.") read, write, err = select.select([self.serv], [], []) if self.serv in read: conn, addr = self.serv.accept() else: self.fail("Error trying to do accept after select.") def _testAccept(self): time.sleep(0.1) self.cli.connect((HOST, PORT)) def testConnect(self): # Testing non-blocking connect conn, addr = self.serv.accept() def _testConnect(self): self.cli.settimeout(10) self.cli.connect((HOST, PORT)) def testRecv(self): # Testing non-blocking recv conn, addr = self.serv.accept() conn.setblocking(0) try: msg = conn.recv(len(MSG)) except socket.error: pass else: self.fail("Error trying to do non-blocking recv.") read, write, err = select.select([conn], [], []) if conn in read: msg = conn.recv(len(MSG)) self.assertEqual(msg, MSG) else: self.fail("Error during select call to non-blocking socket.") def _testRecv(self): self.cli.connect((HOST, PORT)) time.sleep(0.1) self.cli.send(MSG) class FileObjectClassTestCase(SocketConnectedTest): bufsize = -1 # Use default buffer size def __init__(self, methodName='runTest'): SocketConnectedTest.__init__(self, methodName=methodName) def setUp(self): SocketConnectedTest.setUp(self) self.serv_file = self.cli_conn.makefile('rb', self.bufsize) def tearDown(self): self.serv_file.close() self.assert_(self.serv_file.closed) self.serv_file = None SocketConnectedTest.tearDown(self) def clientSetUp(self): SocketConnectedTest.clientSetUp(self) self.cli_file = self.serv_conn.makefile('wb') def clientTearDown(self): self.cli_file.close() self.assert_(self.cli_file.closed) self.cli_file = None SocketConnectedTest.clientTearDown(self) def testSmallRead(self): # Performing small file read test first_seg = self.serv_file.read(len(MSG)-3) second_seg = self.serv_file.read(3) msg = first_seg + second_seg self.assertEqual(msg, MSG) def _testSmallRead(self): self.cli_file.write(MSG) self.cli_file.flush() def testFullRead(self): # read until EOF msg = self.serv_file.read() self.assertEqual(msg, MSG) def _testFullRead(self): self.cli_file.write(MSG) self.cli_file.close() def testUnbufferedRead(self): # Performing unbuffered file read test buf = '' while 1: char = self.serv_file.read(1) if not char: break buf += char self.assertEqual(buf, MSG) def _testUnbufferedRead(self): self.cli_file.write(MSG) self.cli_file.flush() def testReadline(self): # Performing file readline test line = self.serv_file.readline() self.assertEqual(line, MSG) def _testReadline(self): self.cli_file.write(MSG) self.cli_file.flush() def testClosedAttr(self): self.assert_(not self.serv_file.closed) def _testClosedAttr(self): self.assert_(not self.cli_file.closed) class UnbufferedFileObjectClassTestCase(FileObjectClassTestCase): """Repeat the tests from FileObjectClassTestCase with bufsize==0. In this case (and in this case only), it should be possible to create a file object, read a line from it, create another file object, read another line from it, without loss of data in the first file object's buffer. Note that httplib relies on this when reading multiple requests from the same socket.""" bufsize = 0 # Use unbuffered mode def testUnbufferedReadline(self): # Read a line, create a new file object, read another line with it line = self.serv_file.readline() # first line self.assertEqual(line, "A. " + MSG) # first line self.serv_file = self.cli_conn.makefile('rb', 0) line = self.serv_file.readline() # second line self.assertEqual(line, "B. " + MSG) # second line def _testUnbufferedReadline(self): self.cli_file.write("A. " + MSG) self.cli_file.write("B. " + MSG) self.cli_file.flush() class LineBufferedFileObjectClassTestCase(FileObjectClassTestCase): bufsize = 1 # Default-buffered for reading; line-buffered for writing class SmallBufferedFileObjectClassTestCase(FileObjectClassTestCase): bufsize = 2 # Exercise the buffering code class TCPTimeoutTest(SocketTCPTest): def testTCPTimeout(self): def raise_timeout(*args, **kwargs): self.serv.settimeout(1.0) self.serv.accept() self.failUnlessRaises(socket.timeout, raise_timeout, "Error generating a timeout exception (TCP)") def testTimeoutZero(self): ok = False try: self.serv.settimeout(0.0) foo = self.serv.accept() except socket.timeout: self.fail("caught timeout instead of error (TCP)") except socket.error: ok = True except: self.fail("caught unexpected exception (TCP)") if not ok: self.fail("accept() returned success when we did not expect it") class UDPTimeoutTest(SocketTCPTest): def testUDPTimeout(self): def raise_timeout(*args, **kwargs): self.serv.settimeout(1.0) self.serv.recv(1024) self.failUnlessRaises(socket.timeout, raise_timeout, "Error generating a timeout exception (UDP)") def testTimeoutZero(self): ok = False try: self.serv.settimeout(0.0) foo = self.serv.recv(1024) except socket.timeout: self.fail("caught timeout instead of error (UDP)") except socket.error: ok = True except: self.fail("caught unexpected exception (UDP)") if not ok: self.fail("recv() returned success when we did not expect it") class TestExceptions(unittest.TestCase): def testExceptionTree(self): self.assert_(issubclass(socket.error, Exception)) self.assert_(issubclass(socket.herror, socket.error)) self.assert_(issubclass(socket.gaierror, socket.error)) self.assert_(issubclass(socket.timeout, socket.error)) def test_main(): tests = [GeneralModuleTests, BasicTCPTest, TCPTimeoutTest, TestExceptions] if sys.platform != 'mac': tests.extend([ BasicUDPTest, UDPTimeoutTest ]) tests.extend([ NonBlockingTCPTests, FileObjectClassTestCase, UnbufferedFileObjectClassTestCase, LineBufferedFileObjectClassTestCase, SmallBufferedFileObjectClassTestCase ]) if hasattr(socket, "socketpair"): tests.append(BasicSocketPairTest) test_support.run_unittest(*tests) if __name__ == "__main__": test_main()