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Add test for bug #235

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Roman Mogylatov 2019-10-09 10:32:05 -04:00
parent fb264a8379
commit 824484f82e
1 changed files with 17 additions and 0 deletions
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tests/unit/containers/test_declarative_py2_py3.py
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@ -1,5 +1,6 @@
"""Dependency injector declarative container unit tests."""
import collections
import unittest2 as unittest
from dependency_injector import (
@ -313,3 +314,19 @@ class DeclarativeContainerTests(unittest.TestCase):
self.assertIs(container.p2.cls, container.p1)
self.assertIs(_Container.p2.cls, _Container.p1)
self.assertIsNot(container.p2.cls, _Container.p1)
def test_init_with_dependency_delegation(self):
# Bug:
# https://github.com/ets-labs/python-dependency-injector/issues/235
A = collections.namedtuple('A', [])
B = collections.namedtuple('B', ['fa'])
C = collections.namedtuple('B', ['a'])
class Services(containers.DeclarativeContainer):
a = providers.Dependency()
c = providers.Factory(C, a=a)
b = providers.Factory(B, fa=a.delegate())
a = providers.Factory(A)
assert isinstance(Services(a=a).c().a, A) # ok
Services(a=a).b().fa()