def setUp(self): """ Prepares the test fixture before each test method is called. """ self.extension_registry = MutableExtensionRegistry() # Use the extension registry for all extension points and bindings. ExtensionPoint.extension_registry = self.extension_registry
def test_explicit_extension_registry(self): """ explicit extension registry """ registry = self.extension_registry # Add an extension point. registry.add_extension_point(self._create_extension_point('my.ep')) # Add an extension. registry.add_extension('my.ep', 42) # Declare a class that consumes the extension. class Foo(HasTraits): x = List f = Foo() f.on_trait_change(listener) # Create an empty extension registry use that in the binding. extension_registry = MutableExtensionRegistry() # Make some bindings. bind_extension_point(f, 'x', 'my.ep', extension_registry) # Make sure that we pick up the empty extension registry and not the # default one. self.assertEqual(0, len(f.x))