1 files changed, 8 insertions, 0 deletions
diff --git a/tests/handlers/test_oidc.py b/tests/handlers/test_oidc.py
index c9807a7b73..d485af52fd 100644
--- a/tests/handlers/test_oidc.py
+++ b/tests/handlers/test_oidc.py
@@ -731,6 +731,14 @@ class OidcHandlerTestCase(HomeserverTestCase):
         )
         self.assertEqual(mxid, "@test_user:test")
 
+        # Subsequent calls should map to the same mxid.
+        mxid = self.get_success(
+            self.handler._map_userinfo_to_user(
+                userinfo, token, "user-agent", "10.10.10.10"
+            )
+        )
+        self.assertEqual(mxid, "@test_user:test")
+
         # Note that a second SSO user can be mapped to the same Matrix ID. (This
         # requires a unique sub, but something that maps to the same matrix ID,
         # in this case we'll just use the same username. A more realistic example