*
     * @param buffer the buffer to validate
     * @param expectedSize expected minimum size
     * @param maxSize maximum allowed size
     * @throws SmbException if validation fails
     */
    public void validateBuffer(byte[] buffer, int expectedSize, int maxSize) throws SmbException {
        totalValidations.incrementAndGet();

        if (buffer == null) {
            failedValidations.incrementAndGet();

    public void testValidBuffer() throws Exception {
        byte[] buffer = new byte[1024];
        validator.validateBuffer(buffer, 100, 2048);
        // Should pass without exception
    }

    @Test
    public void testNullBuffer() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validateBuffer(null, 100, 1024);
        });
    }

    @Test