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))
