Test that @Inject is recognisable by inspect.isfunction

Author: ZipFile

Diff for: tests/unit/wiring/test_introspection_py36.py

@@ -6,6 +6,13 @@
 from dependency_injector.wiring import inject
 
 
+def test_isfunction():
+    @inject
+    def foo(): ...
+
+    assert inspect.isfunction(foo)
+
+
 def test_asyncio_iscoroutinefunction():
     @inject
     async def foo():