* @throws IOException if an I/O error occurs
     */
    protected abstract void doSkip(Long key) throws IOException;

    /**
     * Checks if the transport is disconnected.
     *
     * @return whether the transport is disconnected
     */
    public boolean isDisconnected() {
        return this.state == 4 || this.state == 5 || this.state == 6 || this.state == 0;
    }

    /**

        assertEquals(ChannelState.DISCONNECTED, channelInfo.getState());
        assertFalse(channelInfo.isPrimary());
        assertEquals(0, channelInfo.getBytesSent());
        assertEquals(0, channelInfo.getBytesReceived());
    }

    @Test
    void testStateTransitions() {
        assertEquals(ChannelState.DISCONNECTED, channelInfo.getState());
        assertFalse(channelInfo.isHealthy());

    @DisplayName("available() on SMB1 returns 0 and marks closed on disconnected statuses")
    void available_smb1_disconnectedStatuses(int status) throws Exception {
        // Verify SMB1 path: disconnected/server-closed statuses yield 0 and mark fd closed
        SmbPipeInputStream stream = newStreamWithInit(false);

        verify(transport).hasCapability(42);
    }

    // Edge: disconnected status toggles
    @ParameterizedTest
    @DisplayName("isDisconnected reflects current mocked state")
    @ValueSource(booleans = { true, false })
    void isDisconnected_states(boolean disconnected) {
        when(transport.isDisconnected()).thenReturn(disconnected);
        assertEquals(disconnected, transport.isDisconnected());

     * @throws SmbException if an error occurs checking capabilities
     */
    boolean hasCapability(int cap) throws SmbException;

    /**
     * Checks if the transport has been disconnected.
     *
     * @return whether the transport has been disconnected
     */
    boolean isDisconnected();

    /**
     * Disconnects the transport from the remote server.
     *
     * @param hard if true, force immediate disconnection

 */
package jcifs.internal.smb2.multichannel;

/**
 * SMB3 Multi-Channel connection states
 */
public enum ChannelState {
    /**
     * Channel is not connected
     */
    DISCONNECTED(0),

    /**
     * Connection establishment in progress
     */
    CONNECTING(1),

    /**
     * Authentication in progress
     */
    AUTHENTICATING(2),

    /**

            assertTrue(
                    initialState == RdmaConnection.RdmaConnectionState.DISCONNECTED
                            || initialState == RdmaConnection.RdmaConnectionState.CONNECTING,
                    "Initial state should be DISCONNECTED or CONNECTING");

            // Test connection properties
            // Note: Local address may be null for TCP fallback provider

import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Disconnect response message.
 *
 * This response confirms that the tree connection
 * has been successfully disconnected.
 *
 * @author mbechler
 */
public class Smb2TreeDisconnectResponse extends ServerMessageBlock2Response {

    /**
     * Creates a new SMB2 tree disconnect response.
     *

        // Note: Real SmbTransportImpl will report as disconnected without actual socket
        SmbTransportImpl second = testPool.getSmbTransport(ctx, address, 445, false);

        // Then: Will create new connection since real transport has no socket
        assertNotSame(first, second, "Should create new connection when first is disconnected");
    }

    @Test

        assertThrows(SmbException.class, () -> tree.treeConnect(null, null));
        // After failure, state should be reset to disconnected
        assertEquals(0, tree.connectionState);
    }

    @Test
    void testSend() throws SmbException {
        SmbTree tree = new SmbTree(session, "testShare", "A:");