From c59813637bbd10ce192c0a4354ea8edb3e6cdc75 Mon Sep 17 00:00:00 2001
From: Patrick Cloke <patrickc@matrix.org>
Date: Tue, 5 Sep 2023 10:52:22 -0400
Subject: [PATCH 1/2] Skip IntrospectionTokenCacheInvalidationTestCase if
 authlib is not installed.

---
 tests/replication/test_intro_token_invalidation.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/replication/test_intro_token_invalidation.py b/tests/replication/test_intro_token_invalidation.py
index f90678b6b1c8..8db463d3a1fc 100644
--- a/tests/replication/test_intro_token_invalidation.py
+++ b/tests/replication/test_intro_token_invalidation.py
@@ -17,8 +17,17 @@
 import synapse.rest.admin._base
 
 from tests.replication._base import BaseMultiWorkerStreamTestCase
+from tests.unittest import skip_unless
 
+try:
+    import authlib  # noqa: F401
 
+    HAS_AUTHLIB = True
+except ImportError:
+    HAS_AUTHLIB = False
+
+
+@skip_unless(HAS_AUTHLIB, "requires authlib")
 class IntrospectionTokenCacheInvalidationTestCase(BaseMultiWorkerStreamTestCase):
     servlets = [synapse.rest.admin.register_servlets]
 

From 8e9a72dcfc20ae2cce502ee04a173e9e7673be90 Mon Sep 17 00:00:00 2001
From: Patrick Cloke <patrickc@matrix.org>
Date: Tue, 5 Sep 2023 10:53:44 -0400
Subject: [PATCH 2/2] Newsfragment

---
 changelog.d/16253.misc | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/16253.misc

diff --git a/changelog.d/16253.misc b/changelog.d/16253.misc
new file mode 100644
index 000000000000..9571a9175740
--- /dev/null
+++ b/changelog.d/16253.misc
@@ -0,0 +1 @@
+Fix `IntrospectionTokenCacheInvalidationTestCase` when `authlib` is not available.