add unit test

Signed-off-by: Samhita Alla <[email protected]>

tests/flytekit/unit/core/test_type_hints.py

@@ -16,7 +16,7 @@
 from dataclasses_json import dataclass_json
 from google.protobuf.struct_pb2 import Struct
 from pandas._testing import assert_frame_equal
-from typing_extensions import Annotated
+from typing_extensions import Annotated, get_origin
 
 import flytekit
 import flytekit.configuration
@@ -89,6 +89,14 @@ def my_task(a: int) -> typing.NamedTuple("OutputsBC", b=typing.ForwardRef("int")
     assert context_manager.FlyteContextManager.size() == 1
 
 
+def test_annotated_namedtuple_output():
+    @task
+    def my_task() -> typing.NamedTuple("OutputA", a=Annotated[int, "metadata-a"]):
+        return 1
+
+    assert get_origin(my_task.python_interface.outputs["a"]) is Annotated
+
+
 def test_simple_input_no_output():
     @task
     def my_task(a: int):