* .
     */
    @Test
    public void testToBinary() {
        assertThat(BinaryConversionUtil.toBinary(null), nullValue());
        final byte[] b = { 0x00, 0x01 };
        assertThat(BinaryConversionUtil.toBinary(b), is(b));
        assertThat(BinaryConversionUtil.toBinary("hoge"), is("hoge".getBytes()));
    }

    /**
     * Test method for

    }

    @Test
    public void testToStringContainsCount() {
        // Little-endian: count = 512 (0x0200)
        byte[] buf = new byte[12];
        buf[0] = 0x00;
        buf[1] = 0x02; // count = 512 in little-endian
        resp.readParameterWordsWireFormat(buf, 0);
        String str = resp.toString();
        assertTrue(str.contains("count=512"), "toString should include numeric count");
    }

	},
	{
		// Zstd default header.
		header: []byte{0x28, 0xb5, 0x2f, 0xfd},
		f:      formatZstd,
	},
	{
		// Zstd skippable frame header.
		header: []byte{0x2a, 0x4d, 0x18},
		f:      formatZstd,
	},
	{
		// LZ4
		header: []byte{0x4, 0x22, 0x4d, 0x18},
		f:      formatLZ4,
	},
	{
		// Snappy/S2 stream
		header: []byte{0xff, 0x06, 0x00, 0x00},
		f:      formatS2,
	},
	{

        // Prepare buffer with totalParameterCount = 1500
        buffer[bufferIndex] = 0x00;
        buffer[bufferIndex + 1] = 0x00;
        buffer[bufferIndex + 2] = 0x00;
        SMBUtil.writeInt4(1500, buffer, bufferIndex + 3);

        // Fill rest of required fields
        for (int i = 7; i < 37; i++) {
            buffer[bufferIndex + i] = 0x00;
        }

        response.readParameterWordsWireFormat(buffer, bufferIndex);

            }
        } else {
            // no password in tree connect
            this.passwordLength = 1;
        }

        dst[dstIndex] = this.disconnectTid ? (byte) 0x01 : (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        SMBUtil.writeInt2(this.passwordLength, dst, dstIndex);
        return 4;
    }

    @SuppressWarnings("deprecation")

        when(this.mechContext.getFlags()).thenReturn(0x1234);
        when(this.mechContext.initSecContext(any(byte[].class), eq(0), eq(0))).thenReturn(new byte[] { 0x01, 0x02 });

        // Act: len==0 triggers initial token construction
        byte[] out = ctx.initSecContext(null, 0, 0);

        // Assert: returns a SPNEGO token (opaque here but non-null/non-empty)

        return Stream.of(Arguments.of("SERVER", 0x20, "CLIENT", 0x00), Arguments.of("WORKSTATION", 0x00, "USER", 0x03),
                Arguments.of("DOMAIN", 0x1B, "BROWSER", 0x1D), Arguments.of("A", 0x20, "B", 0x00),
                Arguments.of("VERYLONGNAMETEST", 0x20, "ANOTHERLONGNAME", 0x00));
    }

    @Test
    @DisplayName("writeTrailerWireFormat should handle different buffer offsets")

            }
        } else {
            // no password in tree connect
            passwordLength = 1;
        }

        dst[dstIndex] = disconnectTid ? (byte) 0x01 : (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        writeInt2(passwordLength, dst, dstIndex);
        return 4;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, int dstIndex) {

    // error classes
    /** Success status code */
    public static final int SUCCESS = 0;
    /** Name service error class */
    public static final int ERR_NAM_SRVC = 0x01;
    /** Session service error class */
    public static final int ERR_SSN_SRVC = 0x02;

    // name service error codes
    /** Format error in the name service */
    public static final int FMT_ERR = 0x1;
    /** Server error in the name service */

    void testFileInformationClassConstants() {
        assertEquals(0x01, Smb2QueryDirectoryRequest.FILE_DIRECTORY_INFO);
        assertEquals(0x02, Smb2QueryDirectoryRequest.FILE_FULL_DIRECTORY_INFO);
        assertEquals(0x03, Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO);
        assertEquals(0x0C, Smb2QueryDirectoryRequest.FILE_NAMES_INFO);