smb.flags = (byte) ServerMessageBlock.FLAGS_RESPONSE;
        assertTrue(smb.isResponse());
        smb.flags = 0;
        assertFalse(smb.isResponse());
    }

    @Test
    void testEqualsAndHashCode() {
        ServerMessageBlock smb1 = new TestServerMessageBlock();
        smb1.mid = 100;

        ServerMessageBlock smb2 = new TestServerMessageBlock();
        smb2.mid = 100;

            assertTrue(s.endsWith("-7-8"));
        }

        @Test
        @DisplayName("equals and hashCode for equal and non-equal SIDs")
        void testEqualsAndHashCode() throws Exception {
            SID a1 = new SID("S-1-5-21-1-2-3-4");
            SID a2 = new SID("S-1-5-21-1-2-3-4");
            SID b = new SID("S-1-5-21-1-2-3-5");

            assertEquals(a1, a2);

        assertTrue(ex.getMessage().contains("Failed to lookup address"));
    }

    @Test
    @DisplayName("hashCode/equals based on address or server fallback")
    void testEqualsAndHashCode() throws Exception {
        UniAddress a = mock(UniAddress.class);
        when(nsc.getAllByName(eq("server"), anyBoolean())).thenReturn(new Address[] { a });