Refs #36467 -- Added test for Set-Cookie header values in ASGIHandler.

tests/asgi/tests.py

@@ -78,6 +78,16 @@ class ASGITest(SimpleTestCase):
         # Allow response.close() to finish.
         await communicator.wait()
 
+    async def test_asgi_cookies(self):
+        application = get_asgi_application()
+        scope = self.async_request_factory._base_scope(path="/cookie/")
+        communicator = ApplicationCommunicator(application, scope)
+        await communicator.send_input({"type": "http.request"})
+        response_start = await communicator.receive_output()
+        self.assertIn((b"Set-Cookie", b"key=value; Path=/"), response_start["headers"])
+        # Allow response.close() to finish.
+        await communicator.wait()
+
     # Python's file API is not async compatible. A third-party library such
     # as https://github.com/Tinche/aiofiles allows passing the file to
     # FileResponse as an async iterator. With a sync iterator

tests/asgi/urls.py

@@ -25,6 +25,12 @@ def hello_meta(request):
     )
 
 
+def hello_cookie(request):
+    response = HttpResponse("Hello World!")
+    response.set_cookie("key", "value")
+    return response
+
+
 def sync_waiter(request):
     with sync_waiter.lock:
         sync_waiter.active_threads.add(threading.current_thread())
@@ -61,6 +67,7 @@ test_filename = __file__
 
 urlpatterns = [
     path("", hello),
+    path("cookie/", hello_cookie),
     path("file/", lambda x: FileResponse(open(test_filename, "rb"))),
     path("meta/", hello_meta),
     path("post/", post_echo),