# Test internal operations of metadata-pairs

[[case]] 
in = "lfs.c"
code = '''
    lfs_init(&lfs, &cfg) => 0;
    lfs_mdir__t mdir = {
        .pair = {0, 1},
        .rev = 0,
        .roff = 0,
        .eoff = 0,
        .count = 0,
        .split = false,
        .eperturb = false,
        .tail = {0xffffffff, 0xffffffff},
    };


    struct lfs_mattr_ attrs[] = {
        {LFS_MKTAG_(LFS_T_USERATTR,  0, 0), "0000", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  1, 0), "0001", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  2, 0), "0002", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  3, 0), "0003", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  4, 0), "0004", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  5, 0), "0005", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  6, 0), "0006", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  7, 0), "0007", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  8, 0), "0008", 4},
        {LFS_MKTAG_(LFS_T_USERATTR,  9, 0), "0009", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 10, 0), "0010", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 11, 0), "0011", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 12, 0), "0012", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 13, 0), "0013", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 14, 0), "0014", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 15, 0), "0015", 4},
        {LFS_MKTAG_(LFS_T_USERATTR, 16, 0), "0016", 4}
    };
    lfs_size_t attr_count = sizeof(attrs)/sizeof(attrs[0]);

    lfs_dir_compact_(&lfs, &mdir, attrs, attr_count) => 0;

    for (lfs_size_t i = 0; i < attr_count; i++) {
        printf("looking up %08x\n", attrs[i].tag);
        lfs_size_t nsize;
        lfs_dir_getattr_(&lfs, &mdir,
                attrs[i].tag,
                buffer, sizeof(buffer), &nsize) => attrs[i].tag;
        assert(nsize == attrs[i].size);
        assert(memcmp(buffer, attrs[i].buffer, attrs[i].size) == 0);
    }
'''