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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Test that twisted scripts can be invoked as modules.
"""
from __future__ import division, absolute_import
import sys
from twisted.application.twist._options import TwistOptions
from twisted.scripts import trial
from twisted.internet import defer, reactor
from twisted.python.compat import NativeStringIO as StringIO
from twisted.test.test_process import Accumulator
from twisted.trial.unittest import TestCase
class MainTests(TestCase):
"""Test that twisted scripts can be invoked as modules."""
def test_twisted(self):
"""Invoking python -m twisted should execute twist."""
cmd = sys.executable
p = Accumulator()
d = p.endedDeferred = defer.Deferred()
reactor.spawnProcess(p, cmd, [cmd, '-m', 'twisted', '--help'], env=None)
p.transport.closeStdin()
# Fix up our sys args to match the command we issued
from twisted import __main__
self.patch(sys, 'argv', [__main__.__file__, '--help'])
def processEnded(ign):
f = p.outF
output = f.getvalue().replace(b'\r\n', b'\n')
options = TwistOptions()
message = '{}\n'.format(options).encode('utf-8')
self.assertEqual(output, message)
return d.addCallback(processEnded)
def test_trial(self):
"""Invoking python -m twisted.trial should execute trial."""
cmd = sys.executable
p = Accumulator()
d = p.endedDeferred = defer.Deferred()
reactor.spawnProcess(p, cmd, [cmd, '-m', 'twisted.trial', '--help'], env=None)
p.transport.closeStdin()
# Fix up our sys args to match the command we issued
from twisted.trial import __main__
self.patch(sys, 'argv', [__main__.__file__, '--help'])
def processEnded(ign):
f = p.outF
output = f.getvalue().replace(b'\r\n', b'\n')
options = trial.Options()
message = '{}\n'.format(options).encode('utf-8')
self.assertEqual(output, message)
return d.addCallback(processEnded)
def test_twisted_import(self):
"""Importing twisted.__main__ does not execute twist."""
output = StringIO()
monkey = self.patch(sys, 'stdout', output)
import twisted.__main__
self.assertTrue(twisted.__main__) # Appease pyflakes
monkey.restore()
self.assertEqual(output.getvalue(), "")