}

    @Test
    @DisplayName("Constructor should handle null tree handle")
    void testConstructor_NullTreeHandle_ThrowsNPE() throws Exception {
        // Given: Valid parent but null tree handle
        when(locator.getType()).thenReturn(SmbConstants.TYPE_WORKGROUP);
        when(locator.getURL()).thenReturn(createSmbURL("smb://"));

        // When & Then: Null tree handle should cause NullPointerException

        verify(session).treeConnectLogon();
    }

    // Happy path: getSmbTree returns a tree and receives correct args
    @Test
    @DisplayName("getSmbTree returns tree and captures arguments")
    void getSmbTree_happy() {
        when(session.getSmbTree(anyString(), anyString())).thenReturn(tree);

        String share = "share";
        String svc = "A:"; // service string example (e.g., DISK, IPC, or other)

        assertTrue(session.isInUse(), "Session should be in use initially");

        // Create and release trees
        SmbTreeImpl tree = session.getSmbTree("share1", null);
        assertNotNull(tree, "Tree should be created");
        tree.release();

        // Release the session (back to initial state)
        session.release();

    }

    /**
     * Test for getTreeType() method.
     * Verifies that the method returns the correct tree type.
     */
    @Test
    void testGetTreeType() {
        when(smbTreeHandle.getTreeType()).thenReturn(SmbConstants.TYPE_SHARE);
        assertEquals(SmbConstants.TYPE_SHARE, smbTreeHandle.getTreeType(), "Tree type should be TYPE_SHARE");
        when(smbTreeHandle.getTreeType()).thenReturn(SmbConstants.TYPE_PRINTER);

        @DisplayName("Should return tree ID from getTreeId")
        void testGetTid() {
            // Given
            response.setTreeId(54321);

            // When
            int tid = response.getTid();

            // Then
            assertEquals(54321, tid, "getTid should return tree ID");
        }

        @Test
        @DisplayName("Should validate tree ID correctly")

  /**
   * A tree-shaped graph that looks as follows (all edges are directed facing downwards):
   *
   * {@snippet :
   *        h
   *       /|\
   *      / | \
   *     /  |  \
   *    d   e   g
   *   /|\      |
   *  / | \     |
   * a  b  c    f
   * }
   */
  private static final SuccessorsFunction<Character> TREE =

     * @param scope the {link PathScope} to collect dependencies, must not be {@code null}
     * @return the collection result, never {@code null}
     * @throws DependencyResolverException if the dependency tree could not be built
     * @throws IllegalArgumentException if an argument is null or invalid
     * @see #collect(DependencyResolverRequest)
     */
    @Nonnull
    default DependencyResolverResult collect(

 */
package jcifs.internal.smb2.tree;

import jcifs.Configuration;
import jcifs.internal.CommonServerMessageBlockRequest;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.TreeConnectResponse;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Connect response message.
 *

        UniAddress addr = getAddress();

        if (tree != null) {
            trans = tree.session.transport;
        } else {
            trans = SmbTransport.getSmbTransport(addr, url.getPort());
            tree = trans.getSmbSession(auth).getSmbTree(share, null);
        }

        final String hostName = getServerWithDfs();
        tree.inDomainDfs = dfs.resolve(hostName, tree.share, null, auth) != null;

 */
package jcifs.internal.smb2.tree;

import java.nio.charset.StandardCharsets;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Request;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Connect request message.
 *