python-dependency-injector/tests/typing/dependency.py

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from typing import Type
from dependency_injector import providers
class Animal:
...
class Cat(Animal):
def __init__(self, *_, **__): ...
# Test 1: to check the return type
provider1 = providers.Dependency(instance_of=Animal)
provider1.override(providers.Factory(Cat))
var1: Animal = provider1()
# Test 2: to check the return type
provider2 = providers.Dependency(instance_of=Animal)
var2: Type[Animal] = provider2.instance_of