if (dstIndex + this.dataLength > dst.length) {
            throw new IllegalArgumentException(
                    String.format("Data exceeds buffer size ( remain buffer: %d data length: %d)", dst.length - dstIndex, this.dataLength));
        }

        System.arraycopy(this.data, this.dataOffset, dst, dstIndex, this.dataLength);
        dstIndex += this.dataLength;

        // Assert
        assertEquals("smb", url.getProtocol());
        assertEquals(SmbConstants.DEFAULT_PORT, url.getPort(), "Default port applied for root smb URL");
        assertNull(url.getRef(), "Ref should remain null for root URL");
    }

    @Test
    @DisplayName("parseURL: fragment is moved into path and ref cleared")
    void testParseURL_FragmentMovedToPath() throws MalformedURLException {
        // Arrange & Act

    private Builder() {}

    /**
     * Sets the safe range of characters for the escaper. Characters in this range that have no
     * explicit replacement are considered 'safe' and remain unescaped in the output. If {@code
     * safeMax < safeMin} then the safe range is empty.
     *
     * @param safeMin the lowest 'safe' character
     * @param safeMax the highest 'safe' character

            // Given
            byte[] buffer = new byte[60];
            SMBUtil.writeInt2(60, buffer, 0); // Structure size
            // All other values remain zero

            // When
            int bytesRead = response.readBytesWireFormat(buffer, 0);

            // Then
            assertEquals(60, bytesRead);

            // This is consistent with the actual implementation behavior
            // The reserved bytes remain as they were in the buffer
            for (int i = 0; i < 4; i++) {
                assertEquals((byte) 0xFF, buffer[startIndex + SOURCE_KEY_SIZE + 4 + i],
                        "Reserved byte at position " + i + " should remain unchanged");
            }
        }

        @Test

        doc.put("content", "コンテンツ");

        languageHelper.updateDocument(doc);

        assertEquals("ja", doc.get("lang"));
        assertEquals("既存のタイトル", doc.get("title_ja")); // Should remain unchanged
        assertEquals("コンテンツ", doc.get("content_ja"));
    }

    public void test_detectLanguage_blank() {
        assertNull(languageHelper.detectLanguage(null));

            assertEquals(0x12345 & 0xFFFF, req.getMaxCount(), "maxCount should contain lower 16 bits");
            assertEquals(0x12345, req.getMinCount(), "minCount should remain original full value");
        }

        @Test
        @DisplayName("Named pipe request uses fixed 1024 hints")
        void namedPipeRequestHints() throws Exception {

        // When
        int bytesWritten = response.writeBytesWireFormat(buffer, 10);

        // Then
        assertEquals(0, bytesWritten);
        assertArrayEquals(originalBuffer, buffer); // Buffer should remain unchanged
    }

    @Test
    @DisplayName("Should handle null configuration gracefully")
    void testNullConfiguration() {
        // When - constructor accepts null config without throwing

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        assertFalse(d.getParametersDone(), "parametersDone should be false for partial read");
        assertFalse(d.getDataDone(), "dataDone should be false for partial read");
        assertTrue(d.getHasMore(), "hasMore should remain true for partial read");
    }

    /**
     * Test scenario with no data to read
     */
    @Test
    public void readBytesWireFormat_noData_succeeds() {
        DummyResponse d = new DummyResponse();