}

        // Should eventually remove the channel
        verify(mockChannelManager, atLeast(1)).removeChannel(failedChannel);
        verify(mockChannelManager, atLeast(1)).establishReplacementChannel();
    }

    @Test
    void testShutdown() {
        failover.shutdown();

        // Should not throw any exceptions
        assertDoesNotThrow(() -> failover.shutdown());
    }

    }

    @Test
    void testEstablishReplacementChannel() {
        // Should not throw exception even when no interfaces are available
        assertDoesNotThrow(() -> channelManager.establishReplacementChannel());
    }

    @Test
    void testGetChannelForTransport() {
        ChannelInfo result = channelManager.getChannelForTransport(mockTransport);
        assertNull(result); // No channels registered yet