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""" Tests for L{twisted.web.tap}. """ from __future__ import absolute_import, division import os import stat from twisted.internet import reactor, endpoints from twisted.internet.interfaces import IReactorUNIX from twisted.python.filepath import FilePath from twisted.python.reflect import requireModule from twisted.python.threadpool import ThreadPool from twisted.python.usage import UsageError from twisted.spread.pb import PBServerFactory from twisted.trial.unittest import TestCase from twisted.web import demo from twisted.web.distrib import ResourcePublisher, UserDirectory from twisted.web.script import PythonScript from twisted.web.server import Site from twisted.web.static import Data, File from twisted.web.tap import Options, makeService from twisted.web.tap import makePersonalServerFactory, _AddHeadersResource from twisted.web.test.requesthelper import DummyRequest from twisted.web.twcgi import CGIScript from twisted.web.wsgi import WSGIResource application = object() class ServiceTests(TestCase): """ Tests for the service creation APIs in L{twisted.web.tap}. """ def _pathOption(self): """ Helper for the I{--path} tests which creates a directory and creates an L{Options} object which uses that directory as its static filesystem root. @return: A two-tuple of a L{FilePath} referring to the directory and the value associated with the C{'root'} key in the L{Options} instance after parsing a I{--path} option. """ path = FilePath(self.mktemp()) path.makedirs() options = Options() options.parseOptions(['--path', path.path]) root = options['root'] return path, root def test_path(self): """ The I{--path} option causes L{Options} to create a root resource which serves responses from the specified path. """ path, root = self._pathOption() self.assertIsInstance(root, File) self.assertEqual(root.path, path.path) def test_pathServer(self): """ The I{--path} option to L{makeService} causes it to return a service which will listen on the server address given by the I{--port} option. """ path = FilePath(self.mktemp()) path.makedirs() port = self.mktemp() options = Options() options.parseOptions(['--port', 'unix:' + port, '--path', path.path]) service = makeService(options) service.startService() self.addCleanup(service.stopService) self.assertIsInstance(service.services[0].factory.resource, File) self.assertEqual(service.services[0].factory.resource.path, path.path) self.assertTrue(os.path.exists(port)) self.assertTrue(stat.S_ISSOCK(os.stat(port).st_mode)) if not IReactorUNIX.providedBy(reactor): test_pathServer.skip = ( "The reactor does not support UNIX domain sockets") def test_cgiProcessor(self): """ The I{--path} option creates a root resource which serves a L{CGIScript} instance for any child with the C{".cgi"} extension. """ path, root = self._pathOption() path.child("foo.cgi").setContent(b"") self.assertIsInstance(root.getChild("foo.cgi", None), CGIScript) def test_epyProcessor(self): """ The I{--path} option creates a root resource which serves a L{PythonScript} instance for any child with the C{".epy"} extension. """ path, root = self._pathOption() path.child("foo.epy").setContent(b"") self.assertIsInstance(root.getChild("foo.epy", None), PythonScript) def test_rpyProcessor(self): """ The I{--path} option creates a root resource which serves the C{resource} global defined by the Python source in any child with the C{".rpy"} extension. """ path, root = self._pathOption() path.child("foo.rpy").setContent( b"from twisted.web.static import Data\n" b"resource = Data('content', 'major/minor')\n") child = root.getChild("foo.rpy", None) self.assertIsInstance(child, Data) self.assertEqual(child.data, 'content') self.assertEqual(child.type, 'major/minor') def test_makePersonalServerFactory(self): """ L{makePersonalServerFactory} returns a PB server factory which has as its root object a L{ResourcePublisher}. """ # The fact that this pile of objects can actually be used somehow is # verified by twisted.web.test.test_distrib. site = Site(Data(b"foo bar", "text/plain")) serverFactory = makePersonalServerFactory(site) self.assertIsInstance(serverFactory, PBServerFactory) self.assertIsInstance(serverFactory.root, ResourcePublisher) self.assertIdentical(serverFactory.root.site, site) def test_personalServer(self): """ The I{--personal} option to L{makeService} causes it to return a service which will listen on the server address given by the I{--port} option. """ port = self.mktemp() options = Options() options.parseOptions(['--port', 'unix:' + port, '--personal']) service = makeService(options) service.startService() self.addCleanup(service.stopService) self.assertTrue(os.path.exists(port)) self.assertTrue(stat.S_ISSOCK(os.stat(port).st_mode)) if not IReactorUNIX.providedBy(reactor): test_personalServer.skip = ( "The reactor does not support UNIX domain sockets") def test_defaultPersonalPath(self): """ If the I{--port} option not specified but the I{--personal} option is, L{Options} defaults the port to C{UserDirectory.userSocketName} in the user's home directory. """ options = Options() options.parseOptions(['--personal']) path = os.path.expanduser( os.path.join('~', UserDirectory.userSocketName)) self.assertEqual(options['ports'][0], 'unix:{}'.format(path)) if not IReactorUNIX.providedBy(reactor): test_defaultPersonalPath.skip = ( "The reactor does not support UNIX domain sockets") def test_defaultPort(self): """ If the I{--port} option is not specified, L{Options} defaults the port to C{8080}. """ options = Options() options.parseOptions([]) self.assertEqual( endpoints._parseServer(options['ports'][0], None)[:2], ('TCP', (8080, None))) def test_twoPorts(self): """ If the I{--http} option is given twice, there are two listeners """ options = Options() options.parseOptions(['--listen', 'tcp:8001', '--listen', 'tcp:8002']) self.assertIn('8001', options['ports'][0]) self.assertIn('8002', options['ports'][1]) def test_wsgi(self): """ The I{--wsgi} option takes the fully-qualifed Python name of a WSGI application object and creates a L{WSGIResource} at the root which serves that application. """ options = Options() options.parseOptions(['--wsgi', __name__ + '.application']) root = options['root'] self.assertTrue(root, WSGIResource) self.assertIdentical(root._reactor, reactor) self.assertTrue(isinstance(root._threadpool, ThreadPool)) self.assertIdentical(root._application, application) # The threadpool should start and stop with the reactor. self.assertFalse(root._threadpool.started) reactor.fireSystemEvent('startup') self.assertTrue(root._threadpool.started) self.assertFalse(root._threadpool.joined) reactor.fireSystemEvent('shutdown') self.assertTrue(root._threadpool.joined) def test_invalidApplication(self): """ If I{--wsgi} is given an invalid name, L{Options.parseOptions} raises L{UsageError}. """ options = Options() for name in [__name__ + '.nosuchthing', 'foo.']: exc = self.assertRaises( UsageError, options.parseOptions, ['--wsgi', name]) self.assertEqual(str(exc), "No such WSGI application: %r" % (name,)) def test_HTTPSFailureOnMissingSSL(self): """ An L{UsageError} is raised when C{https} is requested but there is no support for SSL. """ options = Options() exception = self.assertRaises( UsageError, options.parseOptions, ['--https=443']) self.assertEqual('SSL support not installed', exception.args[0]) if requireModule('OpenSSL.SSL') is not None: test_HTTPSFailureOnMissingSSL.skip = 'SSL module is available.' def test_HTTPSAcceptedOnAvailableSSL(self): """ When SSL support is present, it accepts the --https option. """ options = Options() options.parseOptions(['--https=443']) self.assertIn('ssl', options['ports'][0]) self.assertIn('443', options['ports'][0]) if requireModule('OpenSSL.SSL') is None: test_HTTPSAcceptedOnAvailableSSL.skip = 'SSL module is not available.' def test_add_header_parsing(self): """ When --add-header is specific, the value is parsed. """ options = Options() options.parseOptions( ['--add-header', 'K1: V1', '--add-header', 'K2: V2'] ) self.assertEqual(options['extraHeaders'], [('K1', 'V1'), ('K2', 'V2')]) def test_add_header_resource(self): """ When --add-header is specified, the resource is a composition that adds headers. """ options = Options() options.parseOptions( ['--add-header', 'K1: V1', '--add-header', 'K2: V2'] ) service = makeService(options) resource = service.services[0].factory.resource self.assertIsInstance(resource, _AddHeadersResource) self.assertEqual(resource._headers, [('K1', 'V1'), ('K2', 'V2')]) self.assertIsInstance(resource._originalResource, demo.Test) class AddHeadersResourceTests(TestCase): def test_getChildWithDefault(self): """ When getChildWithDefault is invoked, it adds the headers to the response. """ resource = _AddHeadersResource( demo.Test(), [("K1", "V1"), ("K2", "V2"), ("K1", "V3")]) request = DummyRequest([]) resource.getChildWithDefault("", request) self.assertEqual( request.responseHeaders.getRawHeaders("K1"), ["V1", "V3"]) self.assertEqual(request.responseHeaders.getRawHeaders("K2"), ["V2"])