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: /lib/python3/dist-packages/twisted/names/test/ [ drwxr-xr-x ]
name : test_tap.py # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Tests for L{twisted.names.tap}. """ from twisted.internet.base import ThreadedResolver from twisted.names.client import Resolver from twisted.names.dns import PORT from twisted.names.resolve import ResolverChain from twisted.names.secondary import SecondaryAuthorityService from twisted.names.tap import Options, _buildResolvers from twisted.python.compat import _PY3 from twisted.python.runtime import platform from twisted.python.usage import UsageError from twisted.trial.unittest import SynchronousTestCase class OptionsTests(SynchronousTestCase): """ Tests for L{Options}, defining how command line arguments for the DNS server are parsed. """ def test_malformedSecondary(self): """ If the value supplied for an I{--secondary} option does not provide a server IP address, optional port number, and domain name, L{Options.parseOptions} raises L{UsageError}. """ options = Options() self.assertRaises( UsageError, options.parseOptions, ['--secondary', '']) self.assertRaises( UsageError, options.parseOptions, ['--secondary', '1.2.3.4']) self.assertRaises( UsageError, options.parseOptions, ['--secondary', '1.2.3.4:hello']) self.assertRaises( UsageError, options.parseOptions, ['--secondary', '1.2.3.4:hello/example.com']) def test_secondary(self): """ An argument of the form C{"ip/domain"} is parsed by L{Options} for the I{--secondary} option and added to its list of secondaries, using the default DNS port number. """ options = Options() options.parseOptions(['--secondary', '1.2.3.4/example.com']) self.assertEqual( [(('1.2.3.4', PORT), ['example.com'])], options.secondaries) def test_secondaryExplicitPort(self): """ An argument of the form C{"ip:port/domain"} can be used to specify an alternate port number for which to act as a secondary. """ options = Options() options.parseOptions(['--secondary', '1.2.3.4:5353/example.com']) self.assertEqual( [(('1.2.3.4', 5353), ['example.com'])], options.secondaries) def test_secondaryAuthorityServices(self): """ After parsing I{--secondary} options, L{Options} constructs a L{SecondaryAuthorityService} instance for each configured secondary. """ options = Options() options.parseOptions(['--secondary', '1.2.3.4:5353/example.com', '--secondary', '1.2.3.5:5354/example.com']) self.assertEqual(len(options.svcs), 2) secondary = options.svcs[0] self.assertIsInstance(options.svcs[0], SecondaryAuthorityService) self.assertEqual(secondary.primary, '1.2.3.4') self.assertEqual(secondary._port, 5353) secondary = options.svcs[1] self.assertIsInstance(options.svcs[1], SecondaryAuthorityService) self.assertEqual(secondary.primary, '1.2.3.5') self.assertEqual(secondary._port, 5354) def test_recursiveConfiguration(self): """ Recursive DNS lookups, if enabled, should be a last-resort option. Any other lookup method (cache, local lookup, etc.) should take precedence over recursive lookups """ options = Options() options.parseOptions(['--hosts-file', 'hosts.txt', '--recursive']) ca, cl = _buildResolvers(options) # Extra cleanup, necessary on POSIX because client.Resolver doesn't know # when to stop parsing resolv.conf. See #NNN for improving this. for x in cl: if isinstance(x, ResolverChain): recurser = x.resolvers[-1] if isinstance(recurser, Resolver): recurser._parseCall.cancel() # On Windows, we need to use a threaded resolver, which leaves trash # lying about that we can't easily clean up without reaching into the # reactor and cancelling them. We only cancel the cleanup functions, as # there should be no others (and it leaving a callLater lying about # should rightly cause the test to fail). if platform.getType() != 'posix': # We want the delayed calls on the reactor, which should be all of # ours from the threaded resolver cleanup from twisted.internet import reactor for x in reactor._newTimedCalls: if _PY3: self.assertEqual(x.func.__func__, ThreadedResolver._cleanup) else: self.assertEqual(x.func.__func__, ThreadedResolver._cleanup.__func__) x.cancel() self.assertIsInstance(cl[-1], ResolverChain)