1 files changed, 12 insertions, 0 deletions

diff --git a/src/mailman/rest/tests/test_membership.py b/src/mailman/rest/tests/test_membership.py
index af8da3ee0..f15c2362e 100644
--- a/src/mailman/rest/tests/test_membership.py
+++ b/src/mailman/rest/tests/test_membership.py
@@ -372,6 +372,18 @@ class TestMembership(unittest.TestCase):
         self.assertEqual(cm.exception.code, 400)
         self.assertEqual(cm.exception.reason, b'Membership is banned')
 
+    def test_globally_banned_member_tries_to_join(self):
+        # A user tries to join a list they are banned from.
+        with transaction():
+            IBanManager(None).ban('anne@example.com')
+        with self.assertRaises(HTTPError) as cm:
+            call_api('http://localhost:9001/3.0/members', {
+                'list_id': 'test.example.com',
+                'subscriber': 'anne@example.com',
+                })
+        self.assertEqual(cm.exception.code, 400)
+        self.assertEqual(cm.exception.reason, b'Membership is banned')
+
 
 
 class CustomLayer(ConfigLayer):