assertTrue(str.contains("command=SMB_COM_ECHO"));
        assertTrue(str.contains("errorCode=0"));
        assertTrue(str.contains("mid=1"));
    }

    @Test
    void testToStringUnknownCommand() {
        smb.command = (byte) 0xFF; // Unknown command
        smb.errorCode = 0;
        smb.mid = 1;
        String str = smb.toString();
        assertTrue(str.contains("command=UNKNOWN"));
    }

            assertTrue(result.contains("command="));
            assertFalse(result.contains("command=UNKNOWN"));
        }

        @Test
        @DisplayName("Should format unknown command")
        void testToStringUnknownCommand() {
            testMessage.setCommand(0xFF);
            String result = testMessage.toString();

            assertTrue(result.contains("command=UNKNOWN"));
        }

        @Test