// Act
        int opnum = lookupSids.getOpnum();

        // Assert
        assertEquals(0x0f, opnum);
    }

    @Test
    void constructor_shouldPreservePolicyHandleReference() throws Exception {
        // Arrange
        jcifs.SID mockSid = mock(jcifs.SID.class);
        when(mockSid.unwrap(sid_t.class)).thenReturn(mockSidT);
        testSids = new jcifs.SID[] { mockSid };