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from unittest import TestCase
from class_registry.patcher import RegistryPatcher
from class_registry.registry import ClassRegistry, RegistryKeyError
from test import Bulbasaur, Charmander, Charmeleon, Ivysaur, Squirtle
class RegistryPatcherTestCase(TestCase):
def setUp(self):
super(RegistryPatcherTestCase, self).setUp()
self.registry = ClassRegistry(attr_name='element', unique=True)
def test_patch_detect_keys(self):
"""
Patching a registry in a context, with registry keys detected
automatically.
"""
self.registry.register(Charmander)
self.registry.register(Squirtle)
with RegistryPatcher(self.registry, Charmeleon, Bulbasaur):
self.assertIsInstance(self.registry['fire'], Charmeleon)
self.assertIsInstance(self.registry['water'], Squirtle)
# Nesting contexts? You betcha!
with RegistryPatcher(self.registry, Ivysaur):
self.assertIsInstance(self.registry['grass'], Ivysaur)
self.assertIsInstance(self.registry['grass'], Bulbasaur)
# Save file corrupted. Restoring previous save...
self.assertIsInstance(self.registry['fire'], Charmander)
self.assertIsInstance(self.registry['water'], Squirtle)
with self.assertRaises(RegistryKeyError):
self.registry.get('grass')
def test_patch_manual_keys(self):
"""
Patching a registry in a context, specifying registry keys manually.
"""
self.registry.register('sparky')(Charmander)
self.registry.register('chad')(Squirtle)
with RegistryPatcher(self.registry, sparky=Charmeleon, rex=Bulbasaur):
self.assertIsInstance(self.registry['sparky'], Charmeleon)
self.assertIsInstance(self.registry['chad'], Squirtle)
# Don't worry Chad; your day will come!
with RegistryPatcher(self.registry, rex=Ivysaur):
self.assertIsInstance(self.registry['rex'], Ivysaur)
self.assertIsInstance(self.registry['rex'], Bulbasaur)
# Save file corrupted. Restoring previous save...
self.assertIsInstance(self.registry['sparky'], Charmander)
self.assertIsInstance(self.registry['chad'], Squirtle)
with self.assertRaises(RegistryKeyError):
self.registry.get('jodie')
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