}

    @Test
    @DisplayName("Constructor should handle null parent")
    void testConstructor_NullParent_ThrowsNPE() {
        // When & Then: Null parent should cause NullPointerException
        assertThrows(NullPointerException.class, () -> new NetServerEnumIterator(null, treeHandle, "*", 0, null));
    }

    @Test
    @DisplayName("Constructor should handle null tree handle")

        }

        @Test
        @DisplayName("Should handle null file ID in setter")
        void testSetNullFileId() {
            assertDoesNotThrow(() -> request.setFileId(null));
        }

        @Test
        @DisplayName("Should handle various file ID sizes")
        void testVariousFileIdSizes() {
            byte[] shortFileId = new byte[8];

        }

        @Test
        @DisplayName("should handle null policy handle")
        void testNullPolicyHandleHandled() {
            // Act & Assert - The constructor accepts null policy handle without throwing
            assertDoesNotThrow(() -> new MsrpcSamrConnect2("\\\\srv", 0, null));
        }

        @Test
        @DisplayName("should handle empty string as system name")
        void testEmptySystemName() {

        assertEquals("testdomain", config.getDefaultDomain());
    }

    @Test
    @DisplayName("Should handle null properties gracefully")
    void testNullProperties() throws CIFSException {
        // PropertyConfiguration doesn't handle null properties
        // It should throw NullPointerException
        assertThrows(NullPointerException.class, () -> {

    /**
     * Get failure count for a handle
     *
     * @param handle notification handle
     * @return number of consecutive failures
     */
    private int getFailureCount(ChangeNotificationHandle handle) {
        return failureCounts.getOrDefault(handle.getDirectoryPath(), 0);
    }

    /**
     * Increment failure count for a handle
     *
     * @param handle notification handle
     */

package jcifs.smb1.dcerpc.msrpc;

/**
 * Microsoft RPC LSA close handle request.
 * This class implements the LSARPC close handle operation for closing
 * LSA policy handles when they are no longer needed.
 */
public class MsrpcLsarClose extends lsarpc.LsarClose {

    /**
     * Creates a new request to close an LSA policy handle.
     *
     * @param policyHandle the policy handle to close
     */

        Callback[] cbs = new Callback[] { nc, pc };
        auth.handle(cbs);

        // Name should be formatted as username@domain
        assertEquals("user@DOM", nc.getName());
        // Password should be set
        assertEquals("pass", new String(pc.getPassword()));
    }

    @Test
    @DisplayName("handle: sets only provided callbacks (name-only)")
    void testHandleNameOnly() throws Exception {

    }

    @Test
    @DisplayName("Should handle empty byte array")
    void testToHexStringEmpty() {
        // Given
        byte[] data = {};

        // When
        String result = Hexdump.toHexString(data);

        // Then
        assertNotNull(result);
        assertEquals("", result);
    }

    @Test
    @DisplayName("Should handle null byte array")
    void testToHexStringNull() {

         * Constructs a SamrCloseHandle request.
         *
         * @param handle The policy handle to close
         */
        public SamrCloseHandle(final rpc.policy_handle handle) {
            this.handle = handle;
        }

        @Override
        public void encode_in(final NdrBuffer _dst) throws NdrException {
            this.handle.encode(_dst);
        }

        @Override

         * Constructs a SamrCloseHandle request.
         *
         * @param handle The policy handle to close
         */
        public SamrCloseHandle(final rpc.policy_handle handle) {
            this.handle = handle;
        }

        @Override
        public void encode_in(final NdrBuffer _dst) throws NdrException {
            handle.encode(_dst);
        }

        @Override