// 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
    }

    @Test
    void testChannelManagerLifecycle() {