// Establish connection
        channel.setState(ChannelState.CONNECTING);
        transport.connect();
        
        // Perform channel binding
        performChannelBinding(channel);
        
        // Add to active channels
        channels.put(channelId, channel);
        channel.setState(ChannelState.ESTABLISHED);
        

        // Create channels with zero scores (failed state)
        channel1.setState(ChannelState.FAILED);
        channel2.setState(ChannelState.FAILED);

        when(mockChannelManager.getHealthyChannels()).thenReturn(Arrays.asList(channel1, channel2));

        // Should still select a channel even with zero scores

            return new ArrayList<>(channels);
        }

        public void addChannel(ChannelInfo channel) {
            channels.add(channel);
            if (primaryChannel == null) {
                primaryChannel = channel;
            }
        }

        public void removeChannel(ChannelInfo channel) {
            channels.remove(channel);

     */
    public ChannelInfo getChannelForTransport(SmbTransport transport) {
        return channels.values().stream().filter(c -> c.getTransport() == transport).findFirst().orElse(null);
    }

    /**
     * Remove a channel
     *
     * @param channel channel to remove
     */
    public void removeChannel(ChannelInfo channel) {
        channels.remove(channel.getChannelId());

            long pending = channel.getRequestsPending();
            if (pending < minPending) {
                minPending = pending;
                leastLoadedChannel = channel;
            }
        }
        return leastLoadedChannel != null ? leastLoadedChannel : channels.iterator().next();
    }

    private ChannelInfo selectWeightedRandom(Collection<ChannelInfo> channels) {

    /**
     * Channel binding is preferred but not required
     */
    public static final int CHANNEL_BINDING_PREFERRED = 1;

    /**
     * Channel binding is required
     */
    public static final int CHANNEL_BINDING_REQUIRED = 2;

    /**
     * Default maximum number of channels per session
     */
    public static final int DEFAULT_MAX_CHANNELS = 4;

    /**

        assertArgumentNotNull("channel", channel);

        try {
            return channel.size();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads the contents of the file channel into a byte buffer.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param buffer

                channel.truncate(0);
                props.store(Channels.newOutputStream(channel), "Last modified on: " + new Date());

                lock.release();
                lock = null;

                channel.close();
                channel = null;
            } catch (IOException e) {
                getLogger()
                        .debug(

import java.io.IOException
import java.nio.channels.FileChannel
import okio.Buffer

/**
 * Read and write a target file. Unlike Okio's built-in `Okio.source(java.io.File file)` and `Okio.sink(java.io.File file)`
 * this class offers:
 *
 *  * **Read/write:** read and write using the same operator.
 *  * **Random access:** access any position within the file.
 *  * **Shared channels:** read and write a file channel that's shared between

        // Remove should not throw exception even if channel doesn't exist
        assertDoesNotThrow(() -> channelManager.removeChannel(channel));
    }

    @Test
    void testShutdown() {
        assertDoesNotThrow(() -> channelManager.shutdown());

        // Multiple shutdowns should be safe