verify(file, times(1)).clearAttributeCache();
        verify(file, times(1)).close();
    }

    @Test
    @DisplayName("read(byte[],off,0): returns 0 without I/O")
    void read_lenZero_returnsZero() throws Exception {
        SmbRandomAccessFile raf = newInstance("r", false, false, false);
        byte[] buf = new byte[4];
        assertEquals(0, raf.read(buf, 0, 0));
    }

    @Test