byte[] encoded = AvPairs.encode(pairs);

        assertNotNull(encoded, "Encoded data should not be null");
        assertEquals(4, encoded.length, "Should only have EOL (4 bytes)");
        assertEquals(AvPair.MsvAvEOL, SMBUtil.readInt2(encoded, 0), "Should be EOL");
        assertEquals(0, SMBUtil.readInt2(encoded, 2), "EOL length should be 0");
    }

    /**
     * Test round-trip encoding and decoding

            byte[] buffer = new byte[8];
            int encoded = original.encode(buffer, 0);

            assertEquals(8, encoded);

            // Decode into new instance
            FileEndOfFileInformation decoded = new FileEndOfFileInformation();
            int decodedBytes = decoded.decode(buffer, 0, buffer.length);

            assertEquals(8, decodedBytes);

            // Verify values match

            // Encode all contexts
            byte[] buffer = new byte[512];
            int offset = 0;
            for (CreateContextRequest context : contexts) {
                int encoded = context.encode(buffer, offset);
                assertTrue(encoded > 0);
                offset += encoded;
            }

            // Verify each context was encoded
            assertTrue(offset > 0);

        assertTrue(request.size() > 0);

        // Test encoding
        byte[] buffer = new byte[request.size()];
        int encoded = request.encode(buffer, 0);
        assertEquals(request.size(), encoded);
    }

    @Test
    public void testDurableHandleV2Request() {
        DurableHandleV2Request request = new DurableHandleV2Request(120000, false);

        byte[] buffer1 = new byte[request.size()];
        byte[] buffer2 = new byte[request.size()];

        request.encode(buffer1, 0);
        request.encode(buffer2, 0);

        assertArrayEquals(buffer1, buffer2);
    }

    @Test
    @DisplayName("Test encode with insufficient buffer throws exception")
    void testEncodeWithInsufficientBuffer() {
        ValidateNegotiateInfoRequest request =

     * @return The string encoded in <code>application/x-www-form-urlencoded</code> format.
     */
    public static String encode(final String s, final String enc) {
        assertArgumentNotEmpty("s", s);
        assertArgumentNotEmpty("enc", enc);

        try {
            return URLEncoder.encode(s, enc);
        } catch (final UnsupportedEncodingException e) {

            byte[] buffer = new byte[EXPECTED_SIZE * 3];

            // When
            int offset1 = chunk1.encode(buffer, 0);
            int offset2 = chunk2.encode(buffer, offset1);
            int offset3 = chunk3.encode(buffer, offset1 + offset2);

            // Then
            assertEquals(EXPECTED_SIZE, offset1);
            assertEquals(EXPECTED_SIZE, offset2);

    @MethodSource("decodeProvider")
    void testDecode(String encoded, byte[] expected) {
        // Act
        byte[] actual = Base64.decode(encoded);
        // Assert
        assertArrayEquals(expected, actual, "Base64.decode should return original bytes");
    }

    @Test
    @DisplayName("encode should throw NPE on null input")
    void testEncodeNull() {

            SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey, mockChunk1, mockChunk2);
            byte[] buffer = new byte[200];

            // When
            copy.encode(buffer, 0);

            // Then
            verify(mockChunk1, times(1)).encode(eq(buffer), eq(HEADER_SIZE));

        decoded.decode(buf);
        assertEquals(val, decoded.value, "Decoded value should match encoded value for " + Long.toHexString(val));
    }

    /**
     * Ensure encode throws NPE when passed a null buffer.
     */
    @Test
    @DisplayName("Encode with null buffer throws NullPointerException")
    public void testEncodeNullBuffer() throws NdrException {
        NdrHyper hyper = new NdrHyper(5L);