* @throws IllegalArgumentException if size is invalid
     */
    public static void validateBufferSize(int size, int maxSize, String fieldName) {
        if (size < 0) {
            throw new IllegalArgumentException(fieldName + " size cannot be negative: " + size);
        }
        if (size > maxSize) {

        int i;
        int len;
        if (buf.length < TOK_ID_SIZE + MECH_OID_LEN_SIZE) {
            throw new IllegalArgumentException();
        }
        // TOK_ID
        for (i = 0; i < TOK_ID.length; i++) {
            if (TOK_ID[i] != buf[i]) {
                throw new IllegalArgumentException();
            }
        }
        // MECH_OID_LEN
        len = 0xff00 & buf[i] << 8;
        i++;

            fail("Expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            assertEquals("transliteratorId must not be null", e.getMessage());
        }
    }

    public void test_invalidTransliteratorId() {
        try {
            new ICUNormalizer("Invalid-Transliterator-ID-12345");
            fail("Expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {

    })
    void getSmbTree_invalid(String share, String service) {
        doThrow(new IllegalArgumentException("invalid share/service")).when(session).getSmbTree(eq(share), eq(service));

        IllegalArgumentException ex = assertThrows(IllegalArgumentException.class, () -> session.getSmbTree(share, service));
        assertTrue(ex.getMessage().contains("invalid"));
        verify(session).getSmbTree(eq(share), eq(service));
    }

    @DisplayName("valueOf with unknown or differently-cased names throws IllegalArgumentException")
    void valueOfRejectsUnknownOrCaseMismatch(String badName) {
        IllegalArgumentException ex = assertThrows(IllegalArgumentException.class, () -> RequestParam.valueOf(badName));
        assertTrue(ex.getMessage().contains(badName), "Exception message should mention the bad name");
    }

     */
    @Test
    public void testReadBytes_NullFile() {
        try {
            FileUtil.readBytes(null);
            fail("Expected IllegalArgumentException");
        } catch (final IllegalArgumentException e) {
            // Expected
        }
    }

    /**
     * Test isPathSafe with null path throws exception
     */
    @Test

    private void validateParameters() {
        if (min < 0) {
            throw new IllegalArgumentException("The min parameter cannot be negative.");
        }
        if (max < 0) {
            throw new IllegalArgumentException("The max parameter cannot be negative.");
        }
        if (max < min) {
            throw new IllegalArgumentException("The length cannot be negative.");
        }
    }

     *
     * @param key 16-byte array
     * @throws IllegalArgumentException if key is not 16 bytes
     */
    public Smb2LeaseKey(byte[] key) {
        if (key == null) {
            throw new IllegalArgumentException("Lease key cannot be null");
        }
        if (key.length != LEASE_KEY_SIZE) {
            throw new IllegalArgumentException("Lease key must be 16 bytes, got " + key.length);
        }

                // Wrong TOK_ID
                Arguments.of("wrong TOK_ID", new byte[] { 0x00, 0x02, 0x00, 0x01 }, IllegalArgumentException.class),

                // OID length claims more than available
                Arguments.of("oid length exceeds buffer", new byte[] { 0x04, 0x01, 0x00, 0x10, 0x06 }, IllegalArgumentException.class),

    void testNullKey() {
        assertThrows(IllegalArgumentException.class, () -> new Smb2LeaseKey(null));
    }

    @Test
    @DisplayName("Should reject wrong size key")
    void testWrongSizeKey() {
        assertThrows(IllegalArgumentException.class, () -> new Smb2LeaseKey(new byte[15]));
        assertThrows(IllegalArgumentException.class, () -> new Smb2LeaseKey(new byte[17]));