@Test
    void testIdempotentClose() throws IOException {
        remoteLogManager.close();
        remoteLogManager.close();
        InOrder inorder = inOrder(remoteStorageManager, remoteLogMetadataManager);
        inorder.verify(remoteStorageManager, times(1)).close();
        inorder.verify(remoteLogMetadataManager, times(1)).close();
    }
The following values will be equal when the active segment gets rotated to passive and there are no new messages:
last-stable-offset = high-water-mark = log-end-offset = base-offset-of-active-segment.
This test asserts that the active log segment that was rotated after log.roll.ms are copied to remote storage.
core/src/test/java/kafka/log/remote/RemoteLogManagerTest.java