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""" Tests for L{twisted.application} and its interaction with L{twisted.persisted.sob}. """ from __future__ import absolute_import, division import copy import os import pickle try: import asyncio except ImportError: asyncio = None from twisted.application import service, internet, app, reactors from twisted.internet import interfaces, defer, protocol, reactor from twisted.persisted import sob from twisted.plugins import twisted_reactors from twisted.protocols import wire, basic from twisted.python import usage from twisted.python.compat import NativeStringIO from twisted.python.runtime import platformType from twisted.python.test.modules_helpers import TwistedModulesMixin from twisted.test.proto_helpers import MemoryReactor from twisted.trial import unittest class Dummy: processName=None class ServiceTests(unittest.TestCase): def testName(self): s = service.Service() s.setName("hello") self.assertEqual(s.name, "hello") def testParent(self): s = service.Service() p = service.MultiService() s.setServiceParent(p) self.assertEqual(list(p), [s]) self.assertEqual(s.parent, p) def testApplicationAsParent(self): s = service.Service() p = service.Application("") s.setServiceParent(p) self.assertEqual(list(service.IServiceCollection(p)), [s]) self.assertEqual(s.parent, service.IServiceCollection(p)) def testNamedChild(self): s = service.Service() p = service.MultiService() s.setName("hello") s.setServiceParent(p) self.assertEqual(list(p), [s]) self.assertEqual(s.parent, p) self.assertEqual(p.getServiceNamed("hello"), s) def testDoublyNamedChild(self): s = service.Service() p = service.MultiService() s.setName("hello") s.setServiceParent(p) self.assertRaises(RuntimeError, s.setName, "lala") def testDuplicateNamedChild(self): s = service.Service() p = service.MultiService() s.setName("hello") s.setServiceParent(p) s = service.Service() s.setName("hello") self.assertRaises(RuntimeError, s.setServiceParent, p) def testDisowning(self): s = service.Service() p = service.MultiService() s.setServiceParent(p) self.assertEqual(list(p), [s]) self.assertEqual(s.parent, p) s.disownServiceParent() self.assertEqual(list(p), []) self.assertIsNone(s.parent) def testRunning(self): s = service.Service() self.assertFalse(s.running) s.startService() self.assertTrue(s.running) s.stopService() self.assertFalse(s.running) def testRunningChildren1(self): s = service.Service() p = service.MultiService() s.setServiceParent(p) self.assertFalse(s.running) self.assertFalse(p.running) p.startService() self.assertTrue(s.running) self.assertTrue(p.running) p.stopService() self.assertFalse(s.running) self.assertFalse(p.running) def testRunningChildren2(self): s = service.Service() def checkRunning(): self.assertTrue(s.running) t = service.Service() t.stopService = checkRunning t.startService = checkRunning p = service.MultiService() s.setServiceParent(p) t.setServiceParent(p) p.startService() p.stopService() def testAddingIntoRunning(self): p = service.MultiService() p.startService() s = service.Service() self.assertFalse(s.running) s.setServiceParent(p) self.assertTrue(s.running) s.disownServiceParent() self.assertFalse(s.running) def testPrivileged(self): s = service.Service() def pss(): s.privilegedStarted = 1 s.privilegedStartService = pss s1 = service.Service() p = service.MultiService() s.setServiceParent(p) s1.setServiceParent(p) p.privilegedStartService() self.assertTrue(s.privilegedStarted) def testCopying(self): s = service.Service() s.startService() s1 = copy.copy(s) self.assertFalse(s1.running) self.assertTrue(s.running) if hasattr(os, "getuid"): curuid = os.getuid() curgid = os.getgid() else: curuid = curgid = 0 class ProcessTests(unittest.TestCase): def testID(self): p = service.Process(5, 6) self.assertEqual(p.uid, 5) self.assertEqual(p.gid, 6) def testDefaults(self): p = service.Process(5) self.assertEqual(p.uid, 5) self.assertIsNone(p.gid) p = service.Process(gid=5) self.assertIsNone(p.uid) self.assertEqual(p.gid, 5) p = service.Process() self.assertIsNone(p.uid) self.assertIsNone(p.gid) def testProcessName(self): p = service.Process() self.assertIsNone(p.processName) p.processName = 'hello' self.assertEqual(p.processName, 'hello') class InterfacesTests(unittest.TestCase): def testService(self): self.assertTrue(service.IService.providedBy(service.Service())) def testMultiService(self): self.assertTrue(service.IService.providedBy(service.MultiService())) self.assertTrue(service.IServiceCollection.providedBy( service.MultiService())) def testProcess(self): self.assertTrue(service.IProcess.providedBy(service.Process())) class ApplicationTests(unittest.TestCase): def testConstructor(self): service.Application("hello") service.Application("hello", 5) service.Application("hello", 5, 6) def testProcessComponent(self): a = service.Application("hello") self.assertIsNone(service.IProcess(a).uid) self.assertIsNone(service.IProcess(a).gid) a = service.Application("hello", 5) self.assertEqual(service.IProcess(a).uid, 5) self.assertIsNone(service.IProcess(a).gid) a = service.Application("hello", 5, 6) self.assertEqual(service.IProcess(a).uid, 5) self.assertEqual(service.IProcess(a).gid, 6) def testServiceComponent(self): a = service.Application("hello") self.assertIs(service.IService(a), service.IServiceCollection(a)) self.assertEqual(service.IService(a).name, "hello") self.assertIsNone(service.IService(a).parent) def testPersistableComponent(self): a = service.Application("hello") p = sob.IPersistable(a) self.assertEqual(p.style, 'pickle') self.assertEqual(p.name, 'hello') self.assertIs(p.original, a) class LoadingTests(unittest.TestCase): def test_simpleStoreAndLoad(self): a = service.Application("hello") p = sob.IPersistable(a) for style in 'source pickle'.split(): p.setStyle(style) p.save() a1 = service.loadApplication("hello.ta"+style[0], style) self.assertEqual(service.IService(a1).name, "hello") with open("hello.tac", 'w') as f: f.writelines([ "from twisted.application import service\n", "application = service.Application('hello')\n", ]) a1 = service.loadApplication("hello.tac", 'python') self.assertEqual(service.IService(a1).name, "hello") class AppSupportTests(unittest.TestCase): def testPassphrase(self): self.assertIsNone(app.getPassphrase(0)) def testLoadApplication(self): """ Test loading an application file in different dump format. """ a = service.Application("hello") baseconfig = {'file': None, 'source': None, 'python':None} for style in 'source pickle'.split(): config = baseconfig.copy() config[{'pickle': 'file'}.get(style, style)] = 'helloapplication' sob.IPersistable(a).setStyle(style) sob.IPersistable(a).save(filename='helloapplication') a1 = app.getApplication(config, None) self.assertEqual(service.IService(a1).name, "hello") config = baseconfig.copy() config['python'] = 'helloapplication' with open("helloapplication", 'w') as f: f.writelines([ "from twisted.application import service\n", "application = service.Application('hello')\n", ]) a1 = app.getApplication(config, None) self.assertEqual(service.IService(a1).name, "hello") def test_convertStyle(self): appl = service.Application("lala") for instyle in 'source pickle'.split(): for outstyle in 'source pickle'.split(): sob.IPersistable(appl).setStyle(instyle) sob.IPersistable(appl).save(filename="converttest") app.convertStyle("converttest", instyle, None, "converttest.out", outstyle, 0) appl2 = service.loadApplication("converttest.out", outstyle) self.assertEqual(service.IService(appl2).name, "lala") def test_startApplication(self): appl = service.Application("lala") app.startApplication(appl, 0) self.assertTrue(service.IService(appl).running) class Foo(basic.LineReceiver): def connectionMade(self): self.transport.write(b'lalala\r\n') def lineReceived(self, line): self.factory.line = line self.transport.loseConnection() def connectionLost(self, reason): self.factory.d.callback(self.factory.line) class DummyApp: processName = None def addService(self, service): self.services[service.name] = service def removeService(self, service): del self.services[service.name] class TimerTarget: def __init__(self): self.l = [] def append(self, what): self.l.append(what) class TestEcho(wire.Echo): def connectionLost(self, reason): self.d.callback(True) class InternetTests(unittest.TestCase): def testTCP(self): s = service.MultiService() s.startService() factory = protocol.ServerFactory() factory.protocol = TestEcho TestEcho.d = defer.Deferred() t = internet.TCPServer(0, factory) t.setServiceParent(s) num = t._port.getHost().port factory = protocol.ClientFactory() factory.d = defer.Deferred() factory.protocol = Foo factory.line = None internet.TCPClient('127.0.0.1', num, factory).setServiceParent(s) factory.d.addCallback(self.assertEqual, b'lalala') factory.d.addCallback(lambda x : s.stopService()) factory.d.addCallback(lambda x : TestEcho.d) return factory.d def test_UDP(self): """ Test L{internet.UDPServer} with a random port: starting the service should give it valid port, and stopService should free it so that we can start a server on the same port again. """ if not interfaces.IReactorUDP(reactor, None): raise unittest.SkipTest("This reactor does not support UDP sockets") p = protocol.DatagramProtocol() t = internet.UDPServer(0, p) t.startService() num = t._port.getHost().port self.assertNotEqual(num, 0) def onStop(ignored): t = internet.UDPServer(num, p) t.startService() return t.stopService() return defer.maybeDeferred(t.stopService).addCallback(onStop) def testPrivileged(self): factory = protocol.ServerFactory() factory.protocol = TestEcho TestEcho.d = defer.Deferred() t = internet.TCPServer(0, factory) t.privileged = 1 t.privilegedStartService() num = t._port.getHost().port factory = protocol.ClientFactory() factory.d = defer.Deferred() factory.protocol = Foo factory.line = None c = internet.TCPClient('127.0.0.1', num, factory) c.startService() factory.d.addCallback(self.assertEqual, b'lalala') factory.d.addCallback(lambda x : c.stopService()) factory.d.addCallback(lambda x : t.stopService()) factory.d.addCallback(lambda x : TestEcho.d) return factory.d def testConnectionGettingRefused(self): factory = protocol.ServerFactory() factory.protocol = wire.Echo t = internet.TCPServer(0, factory) t.startService() num = t._port.getHost().port t.stopService() d = defer.Deferred() factory = protocol.ClientFactory() factory.clientConnectionFailed = lambda *args: d.callback(None) c = internet.TCPClient('127.0.0.1', num, factory) c.startService() return d def testUNIX(self): # FIXME: This test is far too dense. It needs comments. # -- spiv, 2004-11-07 s = service.MultiService() s.startService() factory = protocol.ServerFactory() factory.protocol = TestEcho TestEcho.d = defer.Deferred() t = internet.UNIXServer('echo.skt', factory) t.setServiceParent(s) factory = protocol.ClientFactory() factory.protocol = Foo factory.d = defer.Deferred() factory.line = None internet.UNIXClient('echo.skt', factory).setServiceParent(s) factory.d.addCallback(self.assertEqual, b'lalala') factory.d.addCallback(lambda x : s.stopService()) factory.d.addCallback(lambda x : TestEcho.d) factory.d.addCallback(self._cbTestUnix, factory, s) return factory.d def _cbTestUnix(self, ignored, factory, s): TestEcho.d = defer.Deferred() factory.line = None factory.d = defer.Deferred() s.startService() factory.d.addCallback(self.assertEqual, b'lalala') factory.d.addCallback(lambda x : s.stopService()) factory.d.addCallback(lambda x : TestEcho.d) return factory.d def testVolatile(self): factory = protocol.ServerFactory() factory.protocol = wire.Echo t = internet.UNIXServer('echo.skt', factory) t.startService() self.failIfIdentical(t._port, None) t1 = copy.copy(t) self.assertIsNone(t1._port) t.stopService() self.assertIsNone(t._port) self.assertFalse(t.running) factory = protocol.ClientFactory() factory.protocol = wire.Echo t = internet.UNIXClient('echo.skt', factory) t.startService() self.failIfIdentical(t._connection, None) t1 = copy.copy(t) self.assertIsNone(t1._connection) t.stopService() self.assertIsNone(t._connection) self.assertFalse(t.running) def testStoppingServer(self): factory = protocol.ServerFactory() factory.protocol = wire.Echo t = internet.UNIXServer('echo.skt', factory) t.startService() t.stopService() self.assertFalse(t.running) factory = protocol.ClientFactory() d = defer.Deferred() factory.clientConnectionFailed = lambda *args: d.callback(None) reactor.connectUNIX('echo.skt', factory) return d if not interfaces.IReactorUNIX(reactor, None): _skipMsg = "This reactor does not support UNIX domain sockets" testUNIX.skip = _skipMsg testVolatile.skip = _skipMsg testStoppingServer.skip = _skipMsg def testPickledTimer(self): target = TimerTarget() t0 = internet.TimerService(1, target.append, "hello") t0.startService() s = pickle.dumps(t0) t0.stopService() t = pickle.loads(s) self.assertFalse(t.running) def testBrokenTimer(self): d = defer.Deferred() t = internet.TimerService(1, lambda: 1 // 0) oldFailed = t._failed def _failed(why): oldFailed(why) d.callback(None) t._failed = _failed t.startService() d.addCallback(lambda x : t.stopService) d.addCallback(lambda x : self.assertEqual( [ZeroDivisionError], [o.value.__class__ for o in self.flushLoggedErrors(ZeroDivisionError)])) return d def test_everythingThere(self): """ L{twisted.application.internet} dynamically defines a set of L{service.Service} subclasses that in general have corresponding reactor.listenXXX or reactor.connectXXX calls. """ trans = 'TCP UNIX SSL UDP UNIXDatagram Multicast'.split() for tran in trans[:]: if not getattr(interfaces, "IReactor" + tran)(reactor, None): trans.remove(tran) for tran in trans: for side in 'Server Client'.split(): if tran == "Multicast" and side == "Client": continue if tran == "UDP" and side == "Client": continue self.assertTrue(hasattr(internet, tran + side)) method = getattr(internet, tran + side).method prefix = {'Server': 'listen', 'Client': 'connect'}[side] self.assertTrue(hasattr(reactor, prefix + method) or (prefix == "connect" and method == "UDP")) o = getattr(internet, tran + side)() self.assertEqual(service.IService(o), o) def test_importAll(self): """ L{twisted.application.internet} dynamically defines L{service.Service} subclasses. This test ensures that the subclasses exposed by C{__all__} are valid attributes of the module. """ for cls in internet.__all__: self.assertTrue( hasattr(internet, cls), '%s not importable from twisted.application.internet' % (cls,)) def test_reactorParametrizationInServer(self): """ L{internet._AbstractServer} supports a C{reactor} keyword argument that can be used to parametrize the reactor used to listen for connections. """ reactor = MemoryReactor() factory = object() t = internet.TCPServer(1234, factory, reactor=reactor) t.startService() self.assertEqual(reactor.tcpServers.pop()[:2], (1234, factory)) def test_reactorParametrizationInClient(self): """ L{internet._AbstractClient} supports a C{reactor} keyword arguments that can be used to parametrize the reactor used to create new client connections. """ reactor = MemoryReactor() factory = protocol.ClientFactory() t = internet.TCPClient('127.0.0.1', 1234, factory, reactor=reactor) t.startService() self.assertEqual( reactor.tcpClients.pop()[:3], ('127.0.0.1', 1234, factory)) def test_reactorParametrizationInServerMultipleStart(self): """ Like L{test_reactorParametrizationInServer}, but stop and restart the service and check that the given reactor is still used. """ reactor = MemoryReactor() factory = protocol.Factory() t = internet.TCPServer(1234, factory, reactor=reactor) t.startService() self.assertEqual(reactor.tcpServers.pop()[:2], (1234, factory)) t.stopService() t.startService() self.assertEqual(reactor.tcpServers.pop()[:2], (1234, factory)) def test_reactorParametrizationInClientMultipleStart(self): """ Like L{test_reactorParametrizationInClient}, but stop and restart the service and check that the given reactor is still used. """ reactor = MemoryReactor() factory = protocol.ClientFactory() t = internet.TCPClient('127.0.0.1', 1234, factory, reactor=reactor) t.startService() self.assertEqual( reactor.tcpClients.pop()[:3], ('127.0.0.1', 1234, factory)) t.stopService() t.startService() self.assertEqual( reactor.tcpClients.pop()[:3], ('127.0.0.1', 1234, factory)) class TimerBasicTests(unittest.TestCase): def testTimerRuns(self): d = defer.Deferred() self.t = internet.TimerService(1, d.callback, 'hello') self.t.startService() d.addCallback(self.assertEqual, 'hello') d.addCallback(lambda x : self.t.stopService()) d.addCallback(lambda x : self.assertFalse(self.t.running)) return d def tearDown(self): return self.t.stopService() def testTimerRestart(self): # restart the same TimerService d1 = defer.Deferred() d2 = defer.Deferred() work = [(d2, "bar"), (d1, "foo")] def trigger(): d, arg = work.pop() d.callback(arg) self.t = internet.TimerService(1, trigger) self.t.startService() def onFirstResult(result): self.assertEqual(result, 'foo') return self.t.stopService() def onFirstStop(ignored): self.assertFalse(self.t.running) self.t.startService() return d2 def onSecondResult(result): self.assertEqual(result, 'bar') self.t.stopService() d1.addCallback(onFirstResult) d1.addCallback(onFirstStop) d1.addCallback(onSecondResult) return d1 def testTimerLoops(self): l = [] def trigger(data, number, d): l.append(data) if len(l) == number: d.callback(l) d = defer.Deferred() self.t = internet.TimerService(0.01, trigger, "hello", 10, d) self.t.startService() d.addCallback(self.assertEqual, ['hello'] * 10) d.addCallback(lambda x : self.t.stopService()) return d class FakeReactor(reactors.Reactor): """ A fake reactor with a hooked install method. """ def __init__(self, install, *args, **kwargs): """ @param install: any callable that will be used as install method. @type install: C{callable} """ reactors.Reactor.__init__(self, *args, **kwargs) self.install = install class PluggableReactorTests(TwistedModulesMixin, unittest.TestCase): """ Tests for the reactor discovery/inspection APIs. """ def setUp(self): """ Override the L{reactors.getPlugins} function, normally bound to L{twisted.plugin.getPlugins}, in order to control which L{IReactorInstaller} plugins are seen as available. C{self.pluginResults} can be customized and will be used as the result of calls to C{reactors.getPlugins}. """ self.pluginCalls = [] self.pluginResults = [] self.originalFunction = reactors.getPlugins reactors.getPlugins = self._getPlugins def tearDown(self): """ Restore the original L{reactors.getPlugins}. """ reactors.getPlugins = self.originalFunction def _getPlugins(self, interface, package=None): """ Stand-in for the real getPlugins method which records its arguments and returns a fixed result. """ self.pluginCalls.append((interface, package)) return list(self.pluginResults) def test_getPluginReactorTypes(self): """ Test that reactor plugins are returned from L{getReactorTypes} """ name = 'fakereactortest' package = __name__ + '.fakereactor' description = 'description' self.pluginResults = [reactors.Reactor(name, package, description)] reactorTypes = reactors.getReactorTypes() self.assertEqual( self.pluginCalls, [(reactors.IReactorInstaller, None)]) for r in reactorTypes: if r.shortName == name: self.assertEqual(r.description, description) break else: self.fail("Reactor plugin not present in getReactorTypes() result") def test_reactorInstallation(self): """ Test that L{reactors.Reactor.install} loads the correct module and calls its install attribute. """ installed = [] def install(): installed.append(True) fakeReactor = FakeReactor(install, 'fakereactortest', __name__, 'described') modules = {'fakereactortest': fakeReactor} self.replaceSysModules(modules) installer = reactors.Reactor('fakereactor', 'fakereactortest', 'described') installer.install() self.assertEqual(installed, [True]) def test_installReactor(self): """ Test that the L{reactors.installReactor} function correctly installs the specified reactor. """ installed = [] def install(): installed.append(True) name = 'fakereactortest' package = __name__ description = 'description' self.pluginResults = [FakeReactor(install, name, package, description)] reactors.installReactor(name) self.assertEqual(installed, [True]) def test_installReactorReturnsReactor(self): """ Test that the L{reactors.installReactor} function correctly returns the installed reactor. """ reactor = object() def install(): from twisted import internet self.patch(internet, 'reactor', reactor) name = 'fakereactortest' package = __name__ description = 'description' self.pluginResults = [FakeReactor(install, name, package, description)] installed = reactors.installReactor(name) self.assertIs(installed, reactor) def test_installReactorMultiplePlugins(self): """ Test that the L{reactors.installReactor} function correctly installs the specified reactor when there are multiple reactor plugins. """ installed = [] def install(): installed.append(True) name = 'fakereactortest' package = __name__ description = 'description' fakeReactor = FakeReactor(install, name, package, description) otherReactor = FakeReactor(lambda: None, "otherreactor", package, description) self.pluginResults = [otherReactor, fakeReactor] reactors.installReactor(name) self.assertEqual(installed, [True]) def test_installNonExistentReactor(self): """ Test that L{reactors.installReactor} raises L{reactors.NoSuchReactor} when asked to install a reactor which it cannot find. """ self.pluginResults = [] self.assertRaises( reactors.NoSuchReactor, reactors.installReactor, 'somereactor') def test_installNotAvailableReactor(self): """ Test that L{reactors.installReactor} raises an exception when asked to install a reactor which doesn't work in this environment. """ def install(): raise ImportError("Missing foo bar") name = 'fakereactortest' package = __name__ description = 'description' self.pluginResults = [FakeReactor(install, name, package, description)] self.assertRaises(ImportError, reactors.installReactor, name) def test_reactorSelectionMixin(self): """ Test that the reactor selected is installed as soon as possible, ie when the option is parsed. """ executed = [] INSTALL_EVENT = 'reactor installed' SUBCOMMAND_EVENT = 'subcommands loaded' class ReactorSelectionOptions(usage.Options, app.ReactorSelectionMixin): def subCommands(self): executed.append(SUBCOMMAND_EVENT) return [('subcommand', None, lambda: self, 'test subcommand')] subCommands = property(subCommands) def install(): executed.append(INSTALL_EVENT) self.pluginResults = [ FakeReactor(install, 'fakereactortest', __name__, 'described') ] options = ReactorSelectionOptions() options.parseOptions(['--reactor', 'fakereactortest', 'subcommand']) self.assertEqual(executed[0], INSTALL_EVENT) self.assertEqual(executed.count(INSTALL_EVENT), 1) self.assertEqual(options["reactor"], "fakereactortest") def test_reactorSelectionMixinNonExistent(self): """ Test that the usage mixin exits when trying to use a non existent reactor (the name not matching to any reactor), giving an error message. """ class ReactorSelectionOptions(usage.Options, app.ReactorSelectionMixin): pass self.pluginResults = [] options = ReactorSelectionOptions() options.messageOutput = NativeStringIO() e = self.assertRaises(usage.UsageError, options.parseOptions, ['--reactor', 'fakereactortest', 'subcommand']) self.assertIn("fakereactortest", e.args[0]) self.assertIn("help-reactors", e.args[0]) def test_reactorSelectionMixinNotAvailable(self): """ Test that the usage mixin exits when trying to use a reactor not available (the reactor raises an error at installation), giving an error message. """ class ReactorSelectionOptions(usage.Options, app.ReactorSelectionMixin): pass message = "Missing foo bar" def install(): raise ImportError(message) name = 'fakereactortest' package = __name__ description = 'description' self.pluginResults = [FakeReactor(install, name, package, description)] options = ReactorSelectionOptions() options.messageOutput = NativeStringIO() e = self.assertRaises(usage.UsageError, options.parseOptions, ['--reactor', 'fakereactortest', 'subcommand']) self.assertIn(message, e.args[0]) self.assertIn("help-reactors", e.args[0]) class HelpReactorsTests(unittest.TestCase): """ --help-reactors lists the available reactors """ def setUp(self): """ Get the text from --help-reactors """ self.options = app.ReactorSelectionMixin() self.options.messageOutput = NativeStringIO() self.assertRaises(SystemExit, self.options.opt_help_reactors) self.message = self.options.messageOutput.getvalue() def test_lacksAsyncIO(self): """ --help-reactors should NOT display the asyncio reactor on Python < 3.4 """ self.assertIn(twisted_reactors.asyncio.description, self.message) self.assertIn("!" + twisted_reactors.asyncio.shortName, self.message) if asyncio: test_lacksAsyncIO.skip = "Not applicable, asyncio is available" def test_hasAsyncIO(self): """ --help-reactors should display the asyncio reactor on Python >= 3.4 """ self.assertIn(twisted_reactors.asyncio.description, self.message) self.assertNotIn( "!" + twisted_reactors.asyncio.shortName, self.message) if not asyncio: test_hasAsyncIO.skip = "asyncio library not available" def test_iocpWin32(self): """ --help-reactors should display the iocp reactor on Windows """ self.assertIn(twisted_reactors.iocp.description, self.message) self.assertNotIn("!" + twisted_reactors.iocp.shortName, self.message) if platformType != "win32": test_iocpWin32.skip = "Test only applicable on Windows" def test_iocpNotWin32(self): """ --help-reactors should NOT display the iocp reactor on Windows """ self.assertIn(twisted_reactors.iocp.description, self.message) self.assertIn("!" + twisted_reactors.iocp.shortName, self.message) if platformType == "win32": test_iocpNotWin32.skip = "Test only applicable on Windows" def test_onlySupportedReactors(self): """ --help-reactors with only supported reactors """ def getReactorTypes(): yield twisted_reactors.default options = app.ReactorSelectionMixin() options._getReactorTypes = getReactorTypes options.messageOutput = NativeStringIO() self.assertRaises(SystemExit, options.opt_help_reactors) message = options.messageOutput.getvalue() self.assertNotIn("reactors not available", message)