Add tests for nested deps resolution

Author: jazzthief

tests/unit/samples/wiringstringids/resourceclosing.py

@@ -25,6 +25,11 @@ def __init__(self, service: Service):
         self.service = service
 
 
+class NestedService:
+    def __init__(self, factory_service: FactoryService):
+        self.factory_service = factory_service
+
+
 def init_service():
     service = Service()
     service.init()
@@ -36,6 +41,7 @@ class Container(containers.DeclarativeContainer):
 
     service = providers.Resource(init_service)
     factory_service = providers.Factory(FactoryService, service)
+    nested_service = providers.Factory(NestedService, factory_service)
 
 
 @inject
@@ -46,3 +52,10 @@ def test_function(service: Service = Closing[Provide["service"]]):
 @inject
 def test_function_dependency(factory: FactoryService = Closing[Provide["factory_service"]]):
     return factory
+
+
+@inject
+def test_function_nested_dependency(
+    nested: NestedService = Closing[Provide["nested_service"]]
+):
+    return nested

tests/unit/wiring/string_ids/test_main_py36.py

@@ -306,6 +306,23 @@ def test_closing_dependency_resource():
     assert result_1 is not result_2
 
 
+@mark.usefixtures("resourceclosing_container")
+def test_closing_nested_dependency_resource():
+    resourceclosing.Service.reset_counter()
+
+    result_1 = resourceclosing.test_function_nested_dependency()
+    assert isinstance(result_1, resourceclosing.NestedService)
+    assert result_1.factory_service.service.init_counter == 1
+    assert result_1.factory_service.service.shutdown_counter == 1
+
+    result_2 = resourceclosing.test_function_nested_dependency()
+    assert isinstance(result_2, resourceclosing.NestedService)
+    assert result_2.factory_service.service.init_counter == 2
+    assert result_2.factory_service.service.shutdown_counter == 2
+
+    assert result_1 is not result_2
+
+
 @mark.usefixtures("resourceclosing_container")
 def test_closing_resource_bypass_marker_injection():
     resourceclosing.Service.reset_counter()