assertEquals(100, message.alloc_hint);
        }

        @Test
        @DisplayName("decode should handle FAULT ptype correctly")
        void testDecodeFaultPtype() throws NdrException {
            message.ptype = DcerpcConstants.RPC_PT_FAULT; // 3

            // Mock NdrBuffer for decode_header
            when(mockBuffer.dec_ndr_small()).thenReturn(5)