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# Copyright (c) 2008 Divmod. See LICENSE for details.
"""
Tests for L{epsilon.process}.
"""
from zope.interface.verify import verifyObject
from twisted.trial.unittest import TestCase
from twisted.application.service import IService, MultiService
from twisted.internet.protocol import Protocol
from epsilon import process
class StandardIOServiceTests(TestCase):
"""
Tests for L{StandardIOService}, an L{IService} implementation which
associates a L{IProtocol} provider with stdin and stdout when it is
started.
"""
def test_interface(self):
"""
L{StandardIOService} instances provide L{IService}.
"""
verifyObject(IService, process.StandardIOService(None))
def test_startService(self):
"""
L{StandardIOService.startService} connects a protocol to a standard io
transport.
"""
# This sucks. StandardIO sucks. APIs should be testable.
L = []
self.patch(process, 'StandardIO', L.append)
proto = Protocol()
service = process.StandardIOService(proto)
service.startService()
self.assertEqual(L, [proto])
def test_setName(self):
"""
L{StandardIOService.setName} sets the C{name} attribute.
"""
service = process.StandardIOService(None)
service.setName("foo")
self.assertEqual(service.name, "foo")
def test_setServiceParent(self):
"""
L{StandardIOService.setServiceParent} sets the C{parent} attribute and
adds the service as a child of the given parent.
"""
parent = MultiService()
service = process.StandardIOService(None)
service.setServiceParent(parent)
self.assertEqual(list(parent), [service])
self.assertIdentical(service.parent, parent)
def test_disownServiceParent(self):
"""
L{StandardIOService.disownServiceParent} sets the C{parent} attribute
to C{None} and removes the service from the parent's child list.
"""
parent = MultiService()
service = process.StandardIOService(None)
service.setServiceParent(parent)
service.disownServiceParent()
self.assertEqual(list(parent), [])
self.assertIdentical(service.parent, None)
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