diff --git a/test/api/route/messages_test.dart b/test/api/route/messages_test.dart
index 472895b18d..2cb174e1cb 100644
--- a/test/api/route/messages_test.dart
+++ b/test/api/route/messages_test.dart
@@ -454,6 +454,35 @@ void main() {
     });
   });
 
+  group('markTopicAsRead', () {
+    Future<void> checkMarkTopicAsRead(
+      FakeApiConnection connection, {
+        required int streamId,
+        required String topicName,
+        required Map<String, String> expected,
+      }) async {
+        connection.prepare(json: {});
+        await markTopicAsRead(connection,
+          streamId: streamId, topicName: topicName);
+        check(connection.lastRequest).isNotNull().isA<http.Request>()
+          ..method.equals('POST')
+          ..url.path.equals('/api/v1/mark_topic_as_read')
+          ..bodyFields.deepEquals(expected);
+    }
+
+    test('smoke', () {
+      return FakeApiConnection.with_((connection) async {
+        await checkMarkTopicAsRead(connection,
+          streamId: 10,
+          topicName: 'topic',
+          expected: {
+            'stream_id': '10',
+            'topic_name': 'topic',
+          });
+      });
+    });
+  });
+
   group('updateMessageFlags', () {
     Future<UpdateMessageFlagsResult> checkUpdateMessageFlags(
       FakeApiConnection connection, {