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#
# Copyright (C) 2010 Wikkid Developers.
#
# This software is licensed under the GNU Affero General Public License
# version 3 (see the file LICENSE).
"""Tests for the view dispatcher."""
from zope.interface import Interface, implementer
from wikkid.dispatcher import get_view, register_view, unregister_view
from wikkid.tests import TestCase
from wikkid.view.base import BaseView
class TestGetView(TestCase):
"""Tests for get_view."""
def test_no_interfaces(self):
"""If the object supports no interfaces, there is no view."""
class NoInterfaces(object):
pass
obj = NoInterfaces()
self.assertIs(None, get_view(obj, None, None))
def test_interface_not_registered(self):
"""If the object supports an interface, but that interface is not
registered, we get no view."""
class IHasInterface(Interface):
pass
@implementer(IHasInterface)
class HasInterface(object):
pass
obj = HasInterface()
self.assertIs(None, get_view(obj, None, None))
def test_interface_view_registered(self):
"""If the object supports an interface, and the view is registered,
make sure that the view is returned when asked for."""
class IHasInterface(Interface):
pass
@implementer(IHasInterface)
class HasInterface(object):
pass
class AView(object):
for_interface = IHasInterface
name = 'name'
def __init__(self, *args):
pass
def initialize(self):
self.initialized = True
register_view(AView)
self.addCleanup(unregister_view, AView)
obj = HasInterface()
view = get_view(obj, 'name', None)
self.assertIsInstance(view, AView)
self.assertTrue(view.initialized)
def test_interface_view_registered_default(self):
"""If the object supports an interface, and the view is registered as
the default view, when a view is requested where no name is specified,
the default view is returned."""
class IHasInterface(Interface):
pass
@implementer(IHasInterface)
class HasInterface(object):
pass
class AView(object):
for_interface = IHasInterface
name = 'name'
is_default = True
def __init__(self, *args):
pass
def initialize(self):
self.initialized = True
register_view(AView)
self.addCleanup(unregister_view, AView)
obj = HasInterface()
view = get_view(obj, None, None)
self.assertIsInstance(view, AView)
self.assertTrue(view.initialized)
class TestViewRegistration(TestCase):
"""Test that views that inherit from BaseView are registered."""
def test_registration(self):
"""Create a view class, and make sure it is registered."""
class IHasInterface(Interface):
pass
@implementer(IHasInterface)
class HasInterface(object):
pass
class AView(BaseView):
for_interface = IHasInterface
name = 'name'
obj = HasInterface()
view = get_view(obj, 'name', None)
self.assertIsInstance(view, AView)
self.addCleanup(unregister_view, AView)
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