* This prevents accidental modification of these critical constants.
     */
    @Test
    void testConstantValues() {
        // Verify the PAC version
        assertEquals(0, PacConstants.PAC_VERSION, "PAC_VERSION should be 0");

        // Verify PAC buffer types
        assertEquals(1, PacConstants.LOGON_INFO, "LOGON_INFO should be 1");

        h.close(777L);

        // Verify SMB2 close path
        verify(tree, times(1)).send(isA(Smb2CloseRequest.class), eq(RequestParam.NO_RETRY));
        // Tree is always released in finally
        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("close(long) sends SMB1 close request and releases tree when SMB1")

            assertEquals(Integer.MAX_VALUE, request3.getContextType());
        }

        @Test
        @DisplayName("Should verify interface is Encodable")
        void testEncodableInterface() {
            NegotiateContextRequest request = new TestNegotiateContextRequest(1);

            // Verify the interface extends Encodable
            assertNotNull(request);
            assertTrue(request instanceof jcifs.Encodable);
        }

        RequestManager mockRequestManager = createMockRequestManager("en_US");

        // Execute
        OptionalThing<Locale> result = provider.findBusinessLocale(null, mockRequestManager);

        // Verify
        assertTrue(result.isPresent());
        assertEquals(Locale.US, result.get());
    }

    // Test findBusinessLocale with Japanese locale
    @Test

        // Then: Should create successfully
        assertNotNull(iterator);
        assertFalse(iterator.hasNext()); // Empty results

        // Verify tree handle was acquired
        verify(treeHandle).acquire();

        // Cleanup
        iterator.close();
    }

    @Test
    @DisplayName("Constructor should handle workgroup type with non-empty host")

            int result = requestWithData.encode(testBuffer, 0);
            assertTrue(result > 0);

            // Verify header
            for (int i = 0; i < 8; i++) {
                assertEquals((byte) 0xFF, testBuffer[i]);
            }

            // Verify name was copied
            byte[] nameCheck = new byte[testName.length];
            System.arraycopy(testBuffer, 8, nameCheck, 0, testName.length);

        // Verify lease state
        assertEquals(leaseState, SMBUtil.readInt4(buffer, 40));

        // Verify directory-specific data
        assertEquals(DirectoryCacheScope.RECURSIVE_TREE.ordinal(), SMBUtil.readInt4(buffer, 56)); // CacheScope
        assertEquals(45000L, SMBUtil.readInt8(buffer, 60)); // MaxCacheAge

        // Verify flags (RECURSIVE_TREE + NOTIFICATIONS)

    out.write(b);

    verify(hashFunction).newHasher();
    verify(hasher).putByte((byte) b);
    verifyNoMoreInteractions(hashFunction, hasher);
  }

  public void testWrite_putByteArray() throws Exception {
    byte[] buf = new byte[] {'y', 'a', 'm', 's'};
    HashingOutputStream out = new HashingOutputStream(hashFunction, buffer);
    out.write(buf);

    verify(hashFunction).newHasher();

                buffer.encode(dst, 0);

                // Verify SMBUtil.writeInt2 was called for referral level (with long parameter)
                mockedSMBUtil.verify(() -> SMBUtil.writeInt2(eq((long) maxReferralLevel), any(byte[].class), eq(0)));
                // Verify SMBUtil.writeInt2 was called for null terminator
                mockedSMBUtil.verify(() -> SMBUtil.writeInt2(eq(0L), any(byte[].class), anyInt()));
            }

        verify(request, times(1)).isResponseAsync();
        verify(request, times(1)).getNext();
        verify(request, times(1)).split();
        verify(request, times(1)).allowChain(nextRequest);
        verify(request, times(1)).createCancel();
        verify(request, times(1)).size();
        verify(request, times(1)).getOverrideTimeout();
    }

    @Test