src[srcIndex + 53] = 0x04; // flags: active

        // MAC address (6 bytes)
        byte[] testMac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 };
        System.arraycopy(testMac, 0, src, srcIndex + 55, 6);

        // Statistics (6 bytes)
        byte[] stats = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
        System.arraycopy(stats, 0, src, srcIndex + 61, 6);

	// map header, size 4
	// write "NEndpoints"
	err = en.Append(0x84, 0xaa, 0x4e, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74, 0x73)
	if err != nil {
		return
	}
	err = en.WriteInt(z.NEndpoints)
	if err != nil {
		err = msgp.WrapError(err, "NEndpoints")
		return
	}
	// write "CmdLines"
	err = en.Append(0xa8, 0x43, 0x6d, 0x64, 0x4c, 0x69, 0x6e, 0x65, 0x73)
	if err != nil {
		return
	}

	// map header, size 2
	// write "Attempts"
	err = en.Append(0x82, 0xa8, 0x41, 0x74, 0x74, 0x65, 0x6d, 0x70, 0x74, 0x73)
	if err != nil {
		return
	}
	err = en.WriteInt(z.Attempts)
	if err != nil {
		err = msgp.WrapError(err, "Attempts")
		return
	}
	// write "Delay"
	err = en.Append(0xa5, 0x44, 0x65, 0x6c, 0x61, 0x79)
	if err != nil {
		return
	}
	err = en.WriteDuration(z.Delay)

	o = msgp.AppendBool(o, z.ReportNotFound)
	// string "FilterPrefix"
	o = append(o, 0xac, 0x46, 0x69, 0x6c, 0x74, 0x65, 0x72, 0x50, 0x72, 0x65, 0x66, 0x69, 0x78)
	o = msgp.AppendString(o, z.FilterPrefix)
	// string "ForwardTo"
	o = append(o, 0xa9, 0x46, 0x6f, 0x72, 0x77, 0x61, 0x72, 0x64, 0x54, 0x6f)
	o = msgp.AppendString(o, z.ForwardTo)
	// string "Limit"

	// map header, size 3
	// string "Free"
	o = append(o, 0x83, 0xa4, 0x46, 0x72, 0x65, 0x65)
	o = msgp.AppendInt64(o, z.Free)
	// string "Total"
	o = append(o, 0xa5, 0x54, 0x6f, 0x74, 0x61, 0x6c)
	o = msgp.AppendInt64(o, z.Total)
	// string "Used"
	o = append(o, 0xa4, 0x55, 0x73, 0x65, 0x64)
	o = msgp.AppendInt64(o, z.Used)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler

	o = append(o, 0x83, 0xa6, 0x4f, 0x72, 0x67, 0x4e, 0x75, 0x6d)
	o = msgp.AppendInt(o, z.OrgNum)
	// string "OrgString"
	o = append(o, 0xa9, 0x4f, 0x72, 0x67, 0x53, 0x74, 0x72, 0x69, 0x6e, 0x67)
	o = msgp.AppendString(o, z.OrgString)
	// string "Embedded"
	o = append(o, 0xa8, 0x45, 0x6d, 0x62, 0x65, 0x64, 0x64, 0x65, 0x64)
	// map header, size 2
	// string "Num"
	o = append(o, 0x82, 0xa3, 0x4e, 0x75, 0x6d)

	o = msgp.AppendTime(o, z.NotificationConfigUpdatedAt)
	// string "BucketTargetsConfigUpdatedAt"
	o = append(o, 0xbc, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74, 0x54, 0x61, 0x72, 0x67, 0x65, 0x74, 0x73, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x64, 0x41, 0x74)

	// string "SetIndex"
	o = append(o, 0xa8, 0x53, 0x65, 0x74, 0x49, 0x6e, 0x64, 0x65, 0x78)
	o = msgp.AppendInt(o, z.SetIndex)
	// string "PoolIndex"
	o = append(o, 0xa9, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x64, 0x65, 0x78)
	o = msgp.AppendInt(o, z.PoolIndex)
	// string "Queued"
	o = append(o, 0xa6, 0x51, 0x75, 0x65, 0x75, 0x65, 0x64)
	o = msgp.AppendTime(o, z.Queued)
	// string "BitrotScan"

	o = append(o, 0xa6, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65)
	o = msgp.AppendBool(o, z.Create)
	// string "IncludeDirectories"
	o = append(o, 0xb2, 0x49, 0x6e, 0x63, 0x6c, 0x75, 0x64, 0x65, 0x44, 0x69, 0x72, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x69, 0x65, 0x73)
	o = msgp.AppendBool(o, z.IncludeDirectories)
	// string "Transient"
	o = append(o, 0xa9, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x69, 0x65, 0x6e, 0x74)
	o = msgp.AppendBool(o, z.Transient)

            // Unicode strings are written as UTF-16LE with null terminator
            assertTrue(bytesWritten > testString.length());
            // First byte should be 'T' in UTF-16LE (0x54)
            assertEquals(0x54, buffer[10] & 0xFF);
        }

        @Test
        @DisplayName("Test write string without Unicode")
        void testWriteStringNonUnicode() {
            testBlock.setUseUnicode(false);