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# This file is part of cloud-init. See LICENSE file for license information.
from cloudinit.registry import DictRegistry
from cloudinit.tests.helpers import (mock, TestCase)
class TestDictRegistry(TestCase):
def test_added_item_included_in_output(self):
registry = DictRegistry()
item_key, item_to_register = 'test_key', mock.Mock()
registry.register_item(item_key, item_to_register)
self.assertEqual({item_key: item_to_register},
registry.registered_items)
def test_registry_starts_out_empty(self):
self.assertEqual({}, DictRegistry().registered_items)
def test_modifying_registered_items_isnt_exposed_to_other_callers(self):
registry = DictRegistry()
registry.registered_items['test_item'] = mock.Mock()
self.assertEqual({}, registry.registered_items)
def test_keys_cannot_be_replaced(self):
registry = DictRegistry()
item_key = 'test_key'
registry.register_item(item_key, mock.Mock())
self.assertRaises(ValueError,
registry.register_item, item_key, mock.Mock())
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