python-dependency-injector/examples/catalogs/operating_with_providers.py

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2015-08-05 13:44:00 +00:00
"""Operating with catalog providers example."""
from objects.catalog import AbstractCatalog
from objects.providers import Factory
from objects.providers import Singleton
class Catalog(AbstractCatalog):
"""Providers catalog."""
provider1 = Factory(object)
""":type: (objects.Provider) -> object"""
provider2 = Factory(object)
""":type: (objects.Provider) -> object"""
provider3 = Singleton(object)
""":type: (objects.Provider) -> object"""
provider4 = Singleton(object)
""":type: (objects.Provider) -> object"""
# Making some asserts:
assert Catalog.providers == dict(provider1=Catalog.provider1,
provider2=Catalog.provider2,
provider3=Catalog.provider3,
provider4=Catalog.provider4)
assert Catalog.filter(Factory) == dict(provider1=Catalog.provider1,
provider2=Catalog.provider2)
assert Catalog.filter(Singleton) == dict(provider3=Catalog.provider3,
provider4=Catalog.provider4)