Add FactoryAsDecoratorTests

tests/test_providers.py

@@ -1089,3 +1089,27 @@ class ConfigTests(unittest.TestCase):
                          'ChildConfig({0}) at {1}>'.format(
                              repr('.'.join(('category', 'setting'))),
                              hex(id(category_setting))))
+
+
+class FactoryAsDecoratorTests(unittest.TestCase):
+    """Factory as decorator tests."""
+
+    def test_decoration(self):
+        """Test decoration of some class with Factory provider."""
+        @providers.Factory
+        class AuthService(object):
+            """Auth service."""
+
+        @providers.Factory
+        @injections.inject(auth_service=AuthService)
+        class UsersService(object):
+            """Users service."""
+
+            def __init__(self, auth_service):
+                """Initializer."""
+                self.auth_service = auth_service
+
+        users_service = UsersService()
+
+        self.assertIsInstance(users_service, UsersService.cls)
+        self.assertIsInstance(users_service.auth_service, AuthService.cls)