when(mockDeferredNdrBuffer.dec_ndr_long()).thenReturn(2); // _domainss

        refDomainList.decode(mockNdrBuffer);

        assertEquals(2, refDomainList.count);
        assertEquals(5, refDomainList.max_count);
        assertNotNull(refDomainList.domains);
        assertEquals(2, refDomainList.domains.length);