diff --git a/tests/unittests/cli/utils/test_cleanup.py b/tests/unittests/cli/utils/test_cleanup.py
new file mode 100644
index 0000000000..ad94d20b2b
--- /dev/null
+++ b/tests/unittests/cli/utils/test_cleanup.py
@@ -0,0 +1,29 @@
+# Copyright 2026 Google LLC
+#
+# 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 unittest.mock import AsyncMock, Mock
+
+import pytest
+
+from google.adk.cli.utils.cleanup import close_runners
+
+
+@pytest.mark.asyncio
+async def test_close_runners_calls_close():
+    runner = Mock()
+    runner.close = AsyncMock()
+
+    await close_runners([runner])
+
+    runner.close.assert_awaited_once()