assertEquals('9', Hexdump.HEX_DIGITS[9]);
        assertEquals('A', Hexdump.HEX_DIGITS[10]);
        assertEquals('F', Hexdump.HEX_DIGITS[15]);
    }

    @Test
    @DisplayName("Should handle edge cases in toHexChars")
    void testToHexCharsEdgeCases() {
        // Test with zero
        char[] dst1 = new char[4];
        java.util.Arrays.fill(dst1, 'X');
        Hexdump.toHexChars(0, dst1, 0, 4);

            // Then: Should return binding's string representation
            assertEquals("mockBindingString", result);
        }
    }

    @Nested
    @DisplayName("Edge Cases and Error Handling")
    class EdgeCaseTests {

        @Test
        @DisplayName("Should handle null binding toString")
        void testToStringWithNullBinding() {

  }

  /**
   * This test checks an implementation dependent feature. It tests that the method {@code addEdge}
   * will silently add the missing nodes to the graph, then add the edge connecting them. We are not
   * using the proxy methods here as we want to test {@code addEdge} when the end-points are not
   * elements of the graph.
   */
  @Test
  public void addEdge_nodesNotInGraph() {

        byte[] copiedFileId = new byte[16];
        System.arraycopy(buffer, 8, copiedFileId, 0, 16);
        assertArrayEquals(newFileId, copiedFileId);
    }

    @Test
    @DisplayName("Test edge case with minimum buffer size")
    void testMinimumBufferSize() {
        byte[] buffer = new byte[24]; // Exact size needed

        int written = request.writeBytesWireFormat(buffer, 0);

  //    visible to done(). This is because there is no happens before edge between the write and a
  //    (hypothetical) unsafe read by our caller. Note: adding 'volatile' does not fix this issue,
  //    it would just add an edge such that if done() observed non-null, then it would also
  //    definitely observe all earlier writes, but we still have no guarantee that done() would see

            assertEquals("DCERPC_BIND_ERR_ABSTRACT_SYNTAX_NOT_SUPPORTED", exception.getMessage(), "Should return correct error message");
        }
    }

    @Nested
    @DisplayName("Edge Cases and Boundary Tests")
    class EdgeCasesTests {

        @Test
        @DisplayName("Should handle various result codes correctly")
        void testVariousResultCodes() throws Exception {

            request.writeBytesWireFormat(buffer, 0);

            assertEquals(Smb2ReadRequest.SMB2_CHANNEL_NONE, SMBUtil.readInt4(buffer, 36));
        }
    }

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

        @Test
        @DisplayName("Should handle negative offset")
        void testNegativeOffset() {
            request.setOffset(-1L);

            assertEquals(size, mock.size());
            assertEquals(size, mock.encode(new byte[size * 2], 0));
        }
    }

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

        @Test
        @DisplayName("Should handle large buffer encoding")
        void testLargeBufferEncode() {
            byte[] largeName = new byte[1024];

        String result = facetQueryView.toString();
        assertNotNull(result);
        assertTrue(result.contains("title=Empty Map Test"));
        assertTrue(result.contains("queryMap={}"));
    }

    // Test edge cases
    @Test
    public void test_addQuery_withNullValues() {
        facetQueryView.addQuery(null, "query1");
        assertEquals("query1", facetQueryView.getQueryMap().get(null));

	// This matches the limit used by libarchive.
	maxSpecialFileSize = 1 << 20
)

// blockPadding computes the number of bytes needed to pad offset up to the
// nearest block edge where 0 <= n < blockSize.
func blockPadding(offset int64) (n int64) {
	return -offset & (blockSize - 1)
}

var zeroBlock block

type block [blockSize]byte

// Convert block to any number of formats.