}
    }

    @Nested
    @DisplayName("Edge Case Tests")
    class EdgeCaseTests {

        @Test
        @DisplayName("Should handle source key with all zeros")
        void testSourceKeyAllZeros() {
            // Given
            byte[] zeroKey = new byte[SOURCE_KEY_SIZE]; // All zeros by default
            SrvCopychunk chunk = new SrvCopychunk(1, 2, 3);