}

    @ParameterizedTest
    @ValueSource(strings = { "", " ", "*", "?" })
    @DisplayName("Supports various wildcard values without throwing (edge cases)")
    void wildcardEdgeCases(String wildcard) throws Exception {
        // minimal successful first response with a single entry
        when(tree.send(any(Trans2FindFirst2.class), any(Trans2FindFirst2Response.class))).thenAnswer((InvocationOnMock inv) -> {