@BeforeEach
    void setUp() {
        msg = new Dummy();
    }

    // ---------------- Flag manipulation tests -----------------
    @Test
    @DisplayName("Default flag value is zero")
    void testDefaultFlags() {
        assertEquals(0, msg.getFlags(), "Initial flags should be 0");
    }

    @ParameterizedTest(name = "setFlags({0}) ➜ getFlags() == {0}")
    @ValueSource(ints = { 0x0, 0x1, 0x2, 0xFFFFFFFF, -123456 })