verify(smbFile, times(1)).getName();
        verifyNoMoreInteractions(smbFile);
    }

    @Test
    @DisplayName("accept: length-based filter evaluates negative/zero/positive sizes")
    void accept_lengthBasedFilter_handlesNumericEdges() throws Exception {
        // Arrange: filter that accepts only strictly positive length
        SmbFileFilter filter = f -> f.length() > 0;

        // negative size -> reject