diff --git a/tests/rest/client/test_auth_issuer.py b/tests/rest/client/test_auth_issuer.py
deleted file mode 100644
index d6f334a7ab..0000000000
--- a/tests/rest/client/test_auth_issuer.py
+++ /dev/null
@@ -1,79 +0,0 @@
-# Copyright 2023 The Matrix.org Foundation C.I.C.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-from http import HTTPStatus
-from unittest.mock import AsyncMock
-
-from synapse.rest.client import auth_issuer
-
-from tests.unittest import HomeserverTestCase, override_config, skip_unless
-from tests.utils import HAS_AUTHLIB
-
-ISSUER = "https://account.example.com/"
-
-
-class AuthIssuerTestCase(HomeserverTestCase):
- servlets = [
- auth_issuer.register_servlets,
- ]
-
- def test_returns_404_when_msc3861_disabled(self) -> None:
- # Make an unauthenticated request for the discovery info.
- channel = self.make_request(
- "GET",
- "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
- )
- self.assertEqual(channel.code, HTTPStatus.NOT_FOUND)
-
- @skip_unless(HAS_AUTHLIB, "requires authlib")
- @override_config(
- {
- "disable_registration": True,
- "experimental_features": {
- "msc3861": {
- "enabled": True,
- "issuer": ISSUER,
- "client_id": "David Lister",
- "client_auth_method": "client_secret_post",
- "client_secret": "Who shot Mister Burns?",
- }
- },
- }
- )
- def test_returns_issuer_when_oidc_enabled(self) -> None:
- # Patch the HTTP client to return the issuer metadata
- req_mock = AsyncMock(return_value={"issuer": ISSUER})
- self.hs.get_proxied_http_client().get_json = req_mock # type: ignore[method-assign]
-
- channel = self.make_request(
- "GET",
- "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
- )
-
- self.assertEqual(channel.code, HTTPStatus.OK)
- self.assertEqual(channel.json_body, {"issuer": ISSUER})
-
- req_mock.assert_called_with(
- "https://account.example.com/.well-known/openid-configuration"
- )
- req_mock.reset_mock()
-
- # Second call it should use the cached value
- channel = self.make_request(
- "GET",
- "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
- )
-
- self.assertEqual(channel.code, HTTPStatus.OK)
- self.assertEqual(channel.json_body, {"issuer": ISSUER})
- req_mock.assert_not_called()
diff --git a/tests/rest/client/test_auth_metadata.py b/tests/rest/client/test_auth_metadata.py
new file mode 100644
index 0000000000..a935533b09
--- /dev/null
+++ b/tests/rest/client/test_auth_metadata.py
@@ -0,0 +1,140 @@
+#
+# This file is licensed under the Affero General Public License (AGPL) version 3.
+#
+# Copyright 2023 The Matrix.org Foundation C.I.C
+# Copyright (C) 2023-2025 New Vector, Ltd
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# See the GNU Affero General Public License for more details:
+# <https://www.gnu.org/licenses/agpl-3.0.html>.
+#
+# Originally licensed under the Apache License, Version 2.0:
+# <http://www.apache.org/licenses/LICENSE-2.0>.
+#
+# [This file includes modifications made by New Vector Limited]
+#
+from http import HTTPStatus
+from unittest.mock import AsyncMock
+
+from synapse.rest.client import auth_metadata
+
+from tests.unittest import HomeserverTestCase, override_config, skip_unless
+from tests.utils import HAS_AUTHLIB
+
+ISSUER = "https://account.example.com/"
+
+
+class AuthIssuerTestCase(HomeserverTestCase):
+ servlets = [
+ auth_metadata.register_servlets,
+ ]
+
+ def test_returns_404_when_msc3861_disabled(self) -> None:
+ # Make an unauthenticated request for the discovery info.
+ channel = self.make_request(
+ "GET",
+ "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
+ )
+ self.assertEqual(channel.code, HTTPStatus.NOT_FOUND)
+
+ @skip_unless(HAS_AUTHLIB, "requires authlib")
+ @override_config(
+ {
+ "disable_registration": True,
+ "experimental_features": {
+ "msc3861": {
+ "enabled": True,
+ "issuer": ISSUER,
+ "client_id": "David Lister",
+ "client_auth_method": "client_secret_post",
+ "client_secret": "Who shot Mister Burns?",
+ }
+ },
+ }
+ )
+ def test_returns_issuer_when_oidc_enabled(self) -> None:
+ # Patch the HTTP client to return the issuer metadata
+ req_mock = AsyncMock(return_value={"issuer": ISSUER})
+ self.hs.get_proxied_http_client().get_json = req_mock # type: ignore[method-assign]
+
+ channel = self.make_request(
+ "GET",
+ "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
+ )
+
+ self.assertEqual(channel.code, HTTPStatus.OK)
+ self.assertEqual(channel.json_body, {"issuer": ISSUER})
+
+ req_mock.assert_called_with(
+ "https://account.example.com/.well-known/openid-configuration"
+ )
+ req_mock.reset_mock()
+
+ # Second call it should use the cached value
+ channel = self.make_request(
+ "GET",
+ "/_matrix/client/unstable/org.matrix.msc2965/auth_issuer",
+ )
+
+ self.assertEqual(channel.code, HTTPStatus.OK)
+ self.assertEqual(channel.json_body, {"issuer": ISSUER})
+ req_mock.assert_not_called()
+
+
+class AuthMetadataTestCase(HomeserverTestCase):
+ servlets = [
+ auth_metadata.register_servlets,
+ ]
+
+ def test_returns_404_when_msc3861_disabled(self) -> None:
+ # Make an unauthenticated request for the discovery info.
+ channel = self.make_request(
+ "GET",
+ "/_matrix/client/unstable/org.matrix.msc2965/auth_metadata",
+ )
+ self.assertEqual(channel.code, HTTPStatus.NOT_FOUND)
+
+ @skip_unless(HAS_AUTHLIB, "requires authlib")
+ @override_config(
+ {
+ "disable_registration": True,
+ "experimental_features": {
+ "msc3861": {
+ "enabled": True,
+ "issuer": ISSUER,
+ "client_id": "David Lister",
+ "client_auth_method": "client_secret_post",
+ "client_secret": "Who shot Mister Burns?",
+ }
+ },
+ }
+ )
+ def test_returns_issuer_when_oidc_enabled(self) -> None:
+ # Patch the HTTP client to return the issuer metadata
+ req_mock = AsyncMock(
+ return_value={
+ "issuer": ISSUER,
+ "authorization_endpoint": "https://example.com/auth",
+ "token_endpoint": "https://example.com/token",
+ }
+ )
+ self.hs.get_proxied_http_client().get_json = req_mock # type: ignore[method-assign]
+
+ channel = self.make_request(
+ "GET",
+ "/_matrix/client/unstable/org.matrix.msc2965/auth_metadata",
+ )
+
+ self.assertEqual(channel.code, HTTPStatus.OK)
+ self.assertEqual(
+ channel.json_body,
+ {
+ "issuer": ISSUER,
+ "authorization_endpoint": "https://example.com/auth",
+ "token_endpoint": "https://example.com/token",
+ },
+ )
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