}
    }

    @Nested
    @DisplayName("Opnum Tests")
    class OpnumTests {

        @Test
        @DisplayName("getOpnum should always return 0")
        void testGetOpnum() {
            // When
            int opnum = bind.getOpnum();

            // Then
            assertEquals(0, opnum, "Opnum should always be 0 for bind messages");
        }

        @Test