Add issubclass check for init_resources

Author: ZipFile

src/dependency_injector/containers.pyx

@@ -335,6 +335,10 @@ class DynamicContainer(Container):
 
     def init_resources(self, resource_type=providers.Resource):
         """Initialize all container resources."""
+
+        if not issubclass(resource_type, providers.Resource):
+            raise ValueError("resource_type must be a subclass of Resource provider")
+
         futures = []
 
         for provider in self.traverse(types=[resource_type]):
@@ -348,6 +352,10 @@ class DynamicContainer(Container):
 
     def shutdown_resources(self, resource_type=providers.Resource):
         """Shutdown all container resources."""
+
+        if not issubclass(resource_type, providers.Resource):
+            raise ValueError("resource_type must be a subclass of Resource provider")
+
         def _independent_resources(resources):
             for resource in resources:
                 for other_resource in resources:

tests/unit/containers/instance/test_main_py2_py3.py

@@ -325,6 +325,19 @@ class Container(containers.DeclarativeContainer):
     assert _init2.shutdown_counter == 2
 
 
+def test_init_shutdown_resources_wrong_type() -> None:
+    class Container(containers.DeclarativeContainer):
+        pass
+
+    c = Container()
+
+    with raises(ValueError, match=r"resource_type must be a subclass of Resource provider"):
+        c.init_resources(int)  # type: ignore[arg-type]
+
+    with raises(ValueError, match=r"resource_type must be a subclass of Resource provider"):
+        c.shutdown_resources(int)  # type: ignore[arg-type]
+
+
 def test_reset_singletons():
     class SubSubContainer(containers.DeclarativeContainer):
         singleton = providers.Singleton(object)