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https://github.com/ets-labs/python-dependency-injector.git
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54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
"""`Factory` providers with init injections example."""
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from objects.providers import Factory
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from objects.injections import KwArg
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class User(object):
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"""Example class User.
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Class User has dependencies on class Photo and class CreditCard objects,
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that have to be provided as init arguments.
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"""
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def __init__(self, main_photo, credit_card):
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"""Initializer.
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:param main_photo: Photo
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:param credit_card: CreditCard
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:return:
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"""
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self.main_photo = main_photo
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self.credit_card = credit_card
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super(User, self).__init__()
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class Photo(object):
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"""Example class Photo."""
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class CreditCard(object):
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"""Example class CreditCard."""
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# User, Photo and CreditCard factories:
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credit_cards_factory = Factory(CreditCard)
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photos_factory = Factory(Photo)
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users_factory = Factory(User,
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KwArg('main_photo', photos_factory),
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KwArg('credit_card', credit_cards_factory))
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# Creating several User objects:
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user1 = users_factory() # Same as: User(main_photo=Photo(),
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# credit_card=CreditCard())
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user2 = users_factory() # Same as: User(main_photo=Photo(),
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# credit_card=CreditCard())
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# Making some asserts:
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assert user1 is not user2
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assert user1.main_photo is not user2.main_photo
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assert user1.credit_card is not user2.credit_card
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