assert_string_equal(lib->mtd_min_io_size, SYSFS_ROOT "/class/mtd/mtd%d/writesize");
        assert_string_equal(lib->mtd_subpage_size, SYSFS_ROOT "/class/mtd/mtd%d/subpagesize");
        assert_string_equal(lib->mtd_oob_size, SYSFS_ROOT "/class/mtd/mtd%d/oobsize");
+       assert_string_equal(lib->mtd_oobavail, SYSFS_ROOT "/class/mtd/mtd%d/oobavail");
        assert_string_equal(lib->mtd_region_cnt, SYSFS_ROOT "/class/mtd/mtd%d/numeraseregions");
        assert_string_equal(lib->mtd_flags, SYSFS_ROOT "/class/mtd/mtd%d/flags");
 
        expect_open(SYSFS_ROOT "/class/mtd/mtd0/oobsize", O_RDONLY, 0);
        expect_read_real(50,0);
        expect_close(3,1);
+       expect_open(SYSFS_ROOT "/class/mtd/mtd0/oobavail", O_RDONLY, 0);
+       expect_read_real(50,0);
+       expect_close(3,1);
        expect_open(SYSFS_ROOT "/class/mtd/mtd0/numeraseregions", O_RDONLY, 0);
        expect_read_real(50,0);
        expect_close(3,1);