}

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create instance with source key and single chunk")
        void testConstructorWithSingleChunk() {
            // Given
            byte[] sourceKey = new byte[SOURCE_KEY_SIZE];
            Arrays.fill(sourceKey, (byte) 0xAB);
            SrvCopychunk chunk = new SrvCopychunk(100, 200, 300);