# Test this inner rbyd data-structure

[cases.rbyd_commit_fetch]
in = 'lfs.c'
defines.ERASE_VALUE = [0xff, 0x00, 0x1b, -1]
code = '''
    lfs_t lfs;
    lfs_init(&lfs, cfg) => 0;

    lfs_rbyd_t rbyd_init = {
        .block = 0,
        .trunk = 0,
        .noff = 0,
        .rev = 1,
        .crc = 0,
        .count = 0,
        .erased = true,
    };

    // try an empty commit
    lfs_rbyd_t rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd, NULL) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;

    // commit with one attribute
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;

    // commit with two attributes
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4,
            NULL))) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
'''

[cases.rbyd_multi_commit_fetch]
in = 'lfs.c'
defines.ERASE_VALUE = [0xff, 0x00, 0x1b, -1]
code = '''
    lfs_t lfs;
    lfs_init(&lfs, cfg) => 0;

    lfs_rbyd_t rbyd_init = {
        .block = 0,
        .trunk = 0,
        .noff = 0,
        .rev = 1,
        .crc = 0,
        .count = 0,
        .erased = true,
    };

    // try an empty commit
    lfs_rbyd_t rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd, NULL) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;

    // commit with one attribute
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd, NULL) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;

    // commit with two attributes
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4, NULL)) => 0;
    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
'''

[cases.rbyd_commit_lookup]
in = 'lfs.c'
defines.ERASE_VALUE = [0xff, 0x00, 0x1b, -1]
code = '''
    lfs_t lfs;
    lfs_init(&lfs, cfg) => 0;

    lfs_rbyd_t rbyd_init = {
        .block = 0,
        .trunk = 0,
        .noff = 0,
        .rev = 1,
        .crc = 0,
        .count = 0,
        .erased = true,
    };

    // try an empty commit
    lfs_rbyd_t rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd, NULL) => 0;

    // TODO test in-between lookups for consistently finding the next >= tag?
    lfs_off_t off;
    lfs_size_t size;
    lfs_rtag_t ntag;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_ERR_NOENT;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_ERR_NOENT;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    // commit with one attribute
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;

    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    // commit with two attributes
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4,
            NULL))) => 0;

    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 3, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 3, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;
'''

# TODO we should make sure lookup always returns <= the requested tag, 
# this may require fixing in lfs_rbyd_commit to make sure the weights lean
# one way
[cases.rbyd_multi_commit_lookup]
in = 'lfs.c'
defines.ERASE_VALUE = [0xff, 0x00, 0x1b, -1]
code = '''
    lfs_t lfs;
    lfs_init(&lfs, cfg) => 0;

    lfs_rbyd_t rbyd_init = {
        .block = 0,
        .trunk = 0,
        .noff = 0,
        .rev = 1,
        .crc = 0,
        .count = 0,
        .erased = true,
    };

    // try an empty commit
    lfs_rbyd_t rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd, NULL) => 0;

    lfs_off_t off;
    lfs_size_t size;
    lfs_rtag_t ntag;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_ERR_NOENT;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_ERR_NOENT;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    // commit with one attribute
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;

    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    // commit with two attributes
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL)) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4, NULL)) => 0;

    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 3, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, 0, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 3, 0), &off, &size, &ntag)
            => LFS_ERR_NOENT;
'''

# [cases.rbyd_commit_fetchmatch]
# [cases.rbyd_multi_commit_fetchmatch]

[cases.rbyd_leaves]
in = 'lfs.c'
defines.ERASE_VALUE = [0xff, 0x00, 0x1b, -1]
code = '''
    lfs_t lfs;
    lfs_init(&lfs, cfg) => 0;

    lfs_rbyd_t rbyd_init = {
        .block = 0,
        .trunk = 0,
        .noff = 0,
        .rev = 1,
        .crc = 0,
        .count = 0,
        .erased = true,
    };

    // create a split in the leaves
    //       <r
    //   =>  /|
    // 1    1 2
    lfs_rbyd_t rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4, NULL))) => 0;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_off_t off;
    lfs_size_t size;
    lfs_rtag_t ntag;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, 0x98, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);

    // split the other direction
    //       >r
    //   =>  /|
    // 2    2 1
    rbyd = rbyd_init;
    lfs_bd_erase(&lfs, rbyd.block) => 0;
    lfs_rbyd_commit(&lfs, &rbyd,
            LFS_MKRATTR(GSTATE, 2, 0, &(uint32_t){0xbbbbbbbb}, 4,
            LFS_MKRATTR(GSTATE, 1, 0, &(uint32_t){0xaaaaaaaa}, 4, NULL))) => 0;

    lfs_rbyd_fetch(&lfs, &rbyd, rbyd.block, NULL) => 0;
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 1, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 1, 0);
    assert(size == 4);
    //assert(ntag == LFS_MKRTAG(GSTATE, 2, 0));
    lfs_rbyd_lookup(&lfs, &rbyd, 0x98, &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    //assert(ntag == LFS_ERR_NOENT);
    lfs_rbyd_lookup(&lfs, &rbyd, LFS_MKRTAG(GSTATE, 2, 0), &off, &size, &ntag)
            => LFS_MKRTAG(GSTATE, 2, 0);
    assert(size == 4);
    assert(ntag == LFS_ERR_NOENT);
'''