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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Test that twisted scripts can be invoked as modules.
"""
import sys
from io import StringIO
from twisted.internet import defer, reactor
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()
self.assertTrue(
b"-m twisted [options] plugin [plugin_options]" in output, output
)
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()
self.assertTrue(b"-j, --jobs= " in output, output)
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(), "")