@DisplayName("encode should validate size calculation")
        void testEncodeValidSize() {
            byte[] buffer = new byte[1024];
            testRequest.setTestSize(64);
            testRequest.setTestLength(64);

            int result = testRequest.encode(buffer, 0);

            assertEquals(64, result);
        }

        @Test
        @DisplayName("encode should throw exception when size mismatch")