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""" Tests for the core plugin. """
# Standard library imports.
import os.path
import unittest
# Major package imports.
from pkg_resources import resource_filename
# Enthought library imports.
from enthought.envisage.api import Application, Category, ClassLoadHook, Plugin
from enthought.envisage.api import ServiceOffer
from enthought.traits.api import HasTraits, Int, Interface, List
# This module's package.
PKG = 'enthought.envisage.tests'
class TestApplication(Application):
""" The type of application used in the tests. """
id = 'core.plugin.test'
class CorePluginTestCase(unittest.TestCase):
""" Tests for the core plugin. """
###########################################################################
# 'TestCase' interface.
###########################################################################
def setUp(self):
""" Prepares the test fixture before each test method is called. """
return
def tearDown(self):
""" Called immediately after each test method has been called. """
return
###########################################################################
# Tests.
###########################################################################
def test_service_offers(self):
""" service offers """
from enthought.envisage.core_plugin import CorePlugin
class IMyService(Interface):
pass
class PluginA(Plugin):
id = 'A'
service_offers = List(
contributes_to='enthought.envisage.service_offers'
)
def _service_offers_default(self):
""" Trait initializer. """
service_offers = [
ServiceOffer(
protocol=IMyService, factory=self._my_service_factory
)
]
return service_offers
def _my_service_factory(self, **properties):
""" Service factory. """
return 42
core = CorePlugin()
a = PluginA()
application = TestApplication(plugins=[core, a])
application.start()
# Lookup the service.
self.assertEqual(42, application.get_service(IMyService))
# Stop the core plugin.
application.stop_plugin(core)
# Make sure th service has gone.
self.assertEqual(None, application.get_service(IMyService))
return
def test_categories(self):
""" categories """
from enthought.envisage.core_plugin import CorePlugin
class PluginA(Plugin):
id = 'A'
categories = List(contributes_to='enthought.envisage.categories')
def _categories_default(self):
""" Trait initializer. """
bar_category = Category(
class_name = PKG + '.bar_category.BarCategory',
target_class_name = CorePluginTestCase.__module__ + '.Bar'
)
return [bar_category]
core = CorePlugin()
a = PluginA()
application = TestApplication(plugins=[core, a])
application.start()
# Create the target class.
class Bar(HasTraits):
x = Int
# Make sure the category was imported and added.
#
# fixme: The following assertion was commented out. Please don't do
# that! If a test fails we need to work out why - otherwise you have
# just completely removed the benefits of having tests in the first
# place! This test works for me on Python 2.4!
self.assert_('y' in Bar.class_traits())
return
def test_class_load_hooks(self):
""" class load hooks """
from enthought.envisage.core_plugin import CorePlugin
def on_class_loaded(cls):
""" Called when a class has been loaded. """
on_class_loaded.cls = cls
return
class PluginA(Plugin):
id = 'A'
class_load_hooks = List(
[
ClassLoadHook(
class_name = CorePluginTestCase.__module__ + '.Baz',
on_load = on_class_loaded,
)
],
contributes_to='enthought.envisage.class_load_hooks'
)
core = CorePlugin()
a = PluginA()
application = TestApplication(plugins=[core, a])
application.start()
# Make sure we ignore a class that we are not interested in!
class Bif(HasTraits):
pass
# Make sure the class load hook was *ignored*.
self.assert_(not hasattr(on_class_loaded, 'cls'))
# Create the target class.
class Baz(HasTraits):
pass
# Make sure the class load hook was called.
#
# fixme: The following assertion was commented out. Please don't do
# that! If a test fails we need to work out why - otherwise you have
# just completely removed the benefits of having tests in the first
# place! This test works for me on Python 2.4!
self.assertEqual(Baz, on_class_loaded.cls)
return
def test_preferences(self):
""" preferences """
# The core plugin is the plugin that offers the preferences extension
# point.
from enthought.envisage.core_plugin import CorePlugin
class PluginA(Plugin):
id = 'A'
preferences = List(contributes_to='enthought.envisage.preferences')
def _preferences_default(self):
""" Trait initializer. """
return ['file://' + resource_filename(PKG, 'preferences.ini')]
application = TestApplication(plugins=[CorePlugin(), PluginA()])
application.run()
# Make sure we can get one of the preferences.
self.assertEqual('42', application.preferences.get('enthought.test.x'))
return
# Entry point for stand-alone testing.
if __name__ == '__main__':
unittest.main()
#### EOF ######################################################################
|
