}

    @Test
    void testConstructor() {
        assertNotNull(channelManager);
        assertFalse(channelManager.isUseMultiChannel());
        assertEquals(0, channelManager.getChannels().size());
        assertNotNull(channelManager.getLoadBalancer());
    }

    @Test
    void testInitializationWithoutMultiChannelSupport() throws IOException {

        public ChannelGroup(String sessionId) {
            this.sessionId = sessionId;
        }

        public String getSessionId() {
            return sessionId;
        }

        public List<ChannelInfo> getChannels() {
            return new ArrayList<>(channels);
        }

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

    }

    @Test
    void testMultiChannelInitialization() throws Exception {
        // Test that ChannelManager initializes properly
        assertNotNull(channelManager);
        assertNotNull(channelManager.getChannels());
        // Note: isUseMultiChannel() checks if actual multi-channel is negotiated with server
        // In mock environment, this will be false until we mock successful negotiation

        return loadBalancer;
    }

    /**
     * Get all channels
     *
     * @return collection of all channels
     */
    public Collection<ChannelInfo> getChannels() {
        return channels.values();
    }

    /**
     * Get healthy channels only
     *
     * @return collection of healthy channels
     */

    assertEquals(ChannelState.FAILED, channel.getState());
    
    // Verify recovery attempted
    Thread.sleep(2000);
    assertTrue(channel.getState() == ChannelState.ESTABLISHED 
        || manager.getChannels().isEmpty());
}
```

### 7.2 Integration Tests
```java
@Test
public void testMultiChannelThroughput() throws Exception {
    // Requires multi-NIC test environment

      FileOperator(
        randomAccessFile!!.getChannel(),
      )
    val buffer = Buffer()
    operator.read(0, buffer, 5)
    assertThat(buffer.readUtf8()).isEqualTo("Hello")
    operator.read(4, buffer, 5)
    assertThat(buffer.readUtf8()).isEqualTo("o, Wo")
  }

  @Test
  fun write() {
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )

tashkent.su
termez.su
togliatti.su
troitsk.su
tselinograd.su
tula.su
tuva.su
vladikavkaz.su
vladimir.su
vologda.su

// Fancy Bits, LLC : http://getchannels.com
// Submitted by Aman Gupta <aman@getchannels.com>
channelsdvr.net
u.channelsdvr.net

// Fastly Inc. : http://www.fastly.com/
// Submitted by Fastly Security <******@****.***>
edgecompute.app
fastly-edge.com

        assertArgumentNotNull("file", file);

        final FileInputStream is = InputStreamUtil.create(file);
        try {
            final FileChannel channel = is.getChannel();
            final ByteBuffer buffer = ByteBuffer.allocate((int) ChannelUtil.size(channel));
            ChannelUtil.read(channel, buffer);
            return buffer.array();
        } finally {

            FileChannel channel = null;
            FileLock lock = null;
            try {
                Properties props = new Properties();

                channel = new RandomAccessFile(touchfile, "rw").getChannel();
                lock = channel.lock();

                if (touchfile.canRead()) {
                    getLogger().debug("Reading resolution-state from: " + touchfile);

     * @return the number of bytes copied
     */
    protected static int copyInternal(final FileInputStream in, final FileOutputStream out) {
        final FileChannel ic = in.getChannel();
        final FileChannel oc = out.getChannel();
        return (int) ChannelUtil.transfer(ic, oc);
    }

    /**
     * Copies the contents of a reader to a writer.
     * <p>