Commenting out outdated functions for now

This makes it easier to evaluate the code/stack/etc sizes and run tests
without bringing in all of the outdated code.

I guess this officially makes this branch more-or-less a full rewrite,
though the benefit of commenting vs deleting this code is that it can be
easily pulled back in when useful.
This commit is contained in:
Christopher Haster
2023-06-15 16:01:42 -05:00
parent b43d2d2d9d
commit 4ff7c1f771
18 changed files with 13932 additions and 13926 deletions
+343 -343
View File
@@ -1,343 +1,343 @@
# specific corner cases worth explicitly testing for
[cases.test_relocations_dangling_split_dir]
defines.ITERATIONS = 20
defines.COUNT = 10
defines.BLOCK_CYCLES = [8, 1]
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
// fill up filesystem so only ~16 blocks are left
lfs_mount(&lfs, cfg) => 0;
lfs_file_t file;
lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
uint8_t buffer[512];
memset(buffer, 0, 512);
while (BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
lfs_file_write(&lfs, &file, buffer, 512) => 512;
}
lfs_file_close(&lfs, &file) => 0;
// make a child dir to use in bounded space
lfs_mkdir(&lfs, "child") => 0;
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
for (unsigned j = 0; j < ITERATIONS; j++) {
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_file_open(&lfs, &file, path, LFS_O_CREAT | LFS_O_WRONLY) => 0;
lfs_file_close(&lfs, &file) => 0;
}
lfs_dir_t dir;
struct lfs_info info;
lfs_dir_open(&lfs, &dir, "child") => 0;
lfs_dir_read(&lfs, &dir, &info) => 1;
lfs_dir_read(&lfs, &dir, &info) => 1;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "test%03d_loooooooooooooooooong_name", i);
lfs_dir_read(&lfs, &dir, &info) => 1;
strcmp(info.name, path) => 0;
}
lfs_dir_read(&lfs, &dir, &info) => 0;
lfs_dir_close(&lfs, &dir) => 0;
if (j == (unsigned)ITERATIONS-1) {
break;
}
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_remove(&lfs, path) => 0;
}
}
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_dir_t dir;
struct lfs_info info;
lfs_dir_open(&lfs, &dir, "child") => 0;
lfs_dir_read(&lfs, &dir, &info) => 1;
lfs_dir_read(&lfs, &dir, &info) => 1;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "test%03d_loooooooooooooooooong_name", i);
lfs_dir_read(&lfs, &dir, &info) => 1;
strcmp(info.name, path) => 0;
}
lfs_dir_read(&lfs, &dir, &info) => 0;
lfs_dir_close(&lfs, &dir) => 0;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_remove(&lfs, path) => 0;
}
lfs_unmount(&lfs) => 0;
'''
[cases.test_relocations_outdated_head]
defines.ITERATIONS = 20
defines.COUNT = 10
defines.BLOCK_CYCLES = [8, 1]
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
// fill up filesystem so only ~16 blocks are left
lfs_mount(&lfs, cfg) => 0;
lfs_file_t file;
lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
uint8_t buffer[512];
memset(buffer, 0, 512);
while (BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
lfs_file_write(&lfs, &file, buffer, 512) => 512;
}
lfs_file_close(&lfs, &file) => 0;
// make a child dir to use in bounded space
lfs_mkdir(&lfs, "child") => 0;
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
for (unsigned j = 0; j < ITERATIONS; j++) {
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_file_open(&lfs, &file, path, LFS_O_CREAT | LFS_O_WRONLY) => 0;
lfs_file_close(&lfs, &file) => 0;
}
lfs_dir_t dir;
struct lfs_info info;
lfs_dir_open(&lfs, &dir, "child") => 0;
lfs_dir_read(&lfs, &dir, &info) => 1;
lfs_dir_read(&lfs, &dir, &info) => 1;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "test%03d_loooooooooooooooooong_name", i);
lfs_dir_read(&lfs, &dir, &info) => 1;
strcmp(info.name, path) => 0;
info.size => 0;
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_file_open(&lfs, &file, path, LFS_O_WRONLY) => 0;
lfs_file_write(&lfs, &file, "hi", 2) => 2;
lfs_file_close(&lfs, &file) => 0;
}
lfs_dir_read(&lfs, &dir, &info) => 0;
lfs_dir_rewind(&lfs, &dir) => 0;
lfs_dir_read(&lfs, &dir, &info) => 1;
lfs_dir_read(&lfs, &dir, &info) => 1;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "test%03d_loooooooooooooooooong_name", i);
lfs_dir_read(&lfs, &dir, &info) => 1;
strcmp(info.name, path) => 0;
info.size => 2;
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_file_open(&lfs, &file, path, LFS_O_WRONLY) => 0;
lfs_file_write(&lfs, &file, "hi", 2) => 2;
lfs_file_close(&lfs, &file) => 0;
}
lfs_dir_read(&lfs, &dir, &info) => 0;
lfs_dir_rewind(&lfs, &dir) => 0;
lfs_dir_read(&lfs, &dir, &info) => 1;
lfs_dir_read(&lfs, &dir, &info) => 1;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "test%03d_loooooooooooooooooong_name", i);
lfs_dir_read(&lfs, &dir, &info) => 1;
strcmp(info.name, path) => 0;
info.size => 2;
}
lfs_dir_read(&lfs, &dir, &info) => 0;
lfs_dir_close(&lfs, &dir) => 0;
for (unsigned i = 0; i < COUNT; i++) {
char path[1024];
sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
lfs_remove(&lfs, path) => 0;
}
}
lfs_unmount(&lfs) => 0;
'''
# reentrant testing for relocations, this is the same as the
# orphan testing, except here we also set block_cycles so that
# almost every tree operation needs a relocation
[cases.test_relocations_reentrant]
reentrant = true
# TODO fix this case, caused by non-DAG trees
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
{FILES=3, DEPTH=3, CYCLES=20, BLOCK_CYCLES=1},
]
code = '''
lfs_t lfs;
int err = lfs_mount(&lfs, cfg);
if (err) {
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
}
uint32_t prng = 1;
const char alpha[] = "abcdefghijklmnopqrstuvwxyz";
for (unsigned i = 0; i < CYCLES; i++) {
// create random path
char full_path[256];
for (unsigned d = 0; d < DEPTH; d++) {
sprintf(&full_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
}
// if it does not exist, we create it, else we destroy
struct lfs_info info;
int res = lfs_stat(&lfs, full_path, &info);
if (res == LFS_ERR_NOENT) {
// create each directory in turn, ignore if dir already exists
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_mkdir(&lfs, path);
assert(!err || err == LFS_ERR_EXIST);
}
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
lfs_stat(&lfs, path, &info) => 0;
assert(strcmp(info.name, &path[2*d+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
}
} else {
// is valid dir?
assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
// try to delete path in reverse order, ignore if dir is not empty
for (unsigned d = DEPTH-1; d+1 > 0; d--) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
lfs_unmount(&lfs) => 0;
'''
# reentrant testing for relocations, but now with random renames!
[cases.test_relocations_reentrant_renames]
reentrant = true
# TODO fix this case, caused by non-DAG trees
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
{FILES=3, DEPTH=3, CYCLES=20, BLOCK_CYCLES=1},
]
code = '''
lfs_t lfs;
int err = lfs_mount(&lfs, cfg);
if (err) {
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
}
uint32_t prng = 1;
const char alpha[] = "abcdefghijklmnopqrstuvwxyz";
for (unsigned i = 0; i < CYCLES; i++) {
// create random path
char full_path[256];
for (unsigned d = 0; d < DEPTH; d++) {
sprintf(&full_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
}
// if it does not exist, we create it, else we destroy
struct lfs_info info;
int res = lfs_stat(&lfs, full_path, &info);
assert(!res || res == LFS_ERR_NOENT);
if (res == LFS_ERR_NOENT) {
// create each directory in turn, ignore if dir already exists
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_mkdir(&lfs, path);
assert(!err || err == LFS_ERR_EXIST);
}
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
lfs_stat(&lfs, path, &info) => 0;
assert(strcmp(info.name, &path[2*d+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
}
} else {
assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
// create new random path
char new_path[256];
for (unsigned d = 0; d < DEPTH; d++) {
sprintf(&new_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
}
// if new path does not exist, rename, otherwise destroy
res = lfs_stat(&lfs, new_path, &info);
assert(!res || res == LFS_ERR_NOENT);
if (res == LFS_ERR_NOENT) {
// stop once some dir is renamed
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(&path[2*d], &full_path[2*d]);
path[2*d+2] = '\0';
strcpy(&path[128+2*d], &new_path[2*d]);
path[128+2*d+2] = '\0';
err = lfs_rename(&lfs, path, path+128);
assert(!err || err == LFS_ERR_NOTEMPTY);
if (!err) {
strcpy(path, path+128);
}
}
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, new_path);
path[2*d+2] = '\0';
lfs_stat(&lfs, path, &info) => 0;
assert(strcmp(info.name, &path[2*d+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
} else {
// try to delete path in reverse order,
// ignore if dir is not empty
for (unsigned d = DEPTH-1; d+1 > 0; d--) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
}
lfs_unmount(&lfs) => 0;
'''
## specific corner cases worth explicitly testing for
#[cases.test_relocations_dangling_split_dir]
#defines.ITERATIONS = 20
#defines.COUNT = 10
#defines.BLOCK_CYCLES = [8, 1]
#code = '''
# lfs_t lfs;
# lfs_format(&lfs, cfg) => 0;
# // fill up filesystem so only ~16 blocks are left
# lfs_mount(&lfs, cfg) => 0;
# lfs_file_t file;
# lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
# uint8_t buffer[512];
# memset(buffer, 0, 512);
# while (BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
# lfs_file_write(&lfs, &file, buffer, 512) => 512;
# }
# lfs_file_close(&lfs, &file) => 0;
# // make a child dir to use in bounded space
# lfs_mkdir(&lfs, "child") => 0;
# lfs_unmount(&lfs) => 0;
#
# lfs_mount(&lfs, cfg) => 0;
# for (unsigned j = 0; j < ITERATIONS; j++) {
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_file_open(&lfs, &file, path, LFS_O_CREAT | LFS_O_WRONLY) => 0;
# lfs_file_close(&lfs, &file) => 0;
# }
#
# lfs_dir_t dir;
# struct lfs_info info;
# lfs_dir_open(&lfs, &dir, "child") => 0;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "test%03d_loooooooooooooooooong_name", i);
# lfs_dir_read(&lfs, &dir, &info) => 1;
# strcmp(info.name, path) => 0;
# }
# lfs_dir_read(&lfs, &dir, &info) => 0;
# lfs_dir_close(&lfs, &dir) => 0;
#
# if (j == (unsigned)ITERATIONS-1) {
# break;
# }
#
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_remove(&lfs, path) => 0;
# }
# }
# lfs_unmount(&lfs) => 0;
#
# lfs_mount(&lfs, cfg) => 0;
# lfs_dir_t dir;
# struct lfs_info info;
# lfs_dir_open(&lfs, &dir, "child") => 0;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "test%03d_loooooooooooooooooong_name", i);
# lfs_dir_read(&lfs, &dir, &info) => 1;
# strcmp(info.name, path) => 0;
# }
# lfs_dir_read(&lfs, &dir, &info) => 0;
# lfs_dir_close(&lfs, &dir) => 0;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_remove(&lfs, path) => 0;
# }
# lfs_unmount(&lfs) => 0;
#'''
#
#[cases.test_relocations_outdated_head]
#defines.ITERATIONS = 20
#defines.COUNT = 10
#defines.BLOCK_CYCLES = [8, 1]
#code = '''
# lfs_t lfs;
# lfs_format(&lfs, cfg) => 0;
# // fill up filesystem so only ~16 blocks are left
# lfs_mount(&lfs, cfg) => 0;
# lfs_file_t file;
# lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
# uint8_t buffer[512];
# memset(buffer, 0, 512);
# while (BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
# lfs_file_write(&lfs, &file, buffer, 512) => 512;
# }
# lfs_file_close(&lfs, &file) => 0;
# // make a child dir to use in bounded space
# lfs_mkdir(&lfs, "child") => 0;
# lfs_unmount(&lfs) => 0;
#
# lfs_mount(&lfs, cfg) => 0;
# for (unsigned j = 0; j < ITERATIONS; j++) {
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_file_open(&lfs, &file, path, LFS_O_CREAT | LFS_O_WRONLY) => 0;
# lfs_file_close(&lfs, &file) => 0;
# }
#
# lfs_dir_t dir;
# struct lfs_info info;
# lfs_dir_open(&lfs, &dir, "child") => 0;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "test%03d_loooooooooooooooooong_name", i);
# lfs_dir_read(&lfs, &dir, &info) => 1;
# strcmp(info.name, path) => 0;
# info.size => 0;
#
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_file_open(&lfs, &file, path, LFS_O_WRONLY) => 0;
# lfs_file_write(&lfs, &file, "hi", 2) => 2;
# lfs_file_close(&lfs, &file) => 0;
# }
# lfs_dir_read(&lfs, &dir, &info) => 0;
#
# lfs_dir_rewind(&lfs, &dir) => 0;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "test%03d_loooooooooooooooooong_name", i);
# lfs_dir_read(&lfs, &dir, &info) => 1;
# strcmp(info.name, path) => 0;
# info.size => 2;
#
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_file_open(&lfs, &file, path, LFS_O_WRONLY) => 0;
# lfs_file_write(&lfs, &file, "hi", 2) => 2;
# lfs_file_close(&lfs, &file) => 0;
# }
# lfs_dir_read(&lfs, &dir, &info) => 0;
#
# lfs_dir_rewind(&lfs, &dir) => 0;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# lfs_dir_read(&lfs, &dir, &info) => 1;
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "test%03d_loooooooooooooooooong_name", i);
# lfs_dir_read(&lfs, &dir, &info) => 1;
# strcmp(info.name, path) => 0;
# info.size => 2;
# }
# lfs_dir_read(&lfs, &dir, &info) => 0;
# lfs_dir_close(&lfs, &dir) => 0;
#
# for (unsigned i = 0; i < COUNT; i++) {
# char path[1024];
# sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
# lfs_remove(&lfs, path) => 0;
# }
# }
# lfs_unmount(&lfs) => 0;
#'''
#
## reentrant testing for relocations, this is the same as the
## orphan testing, except here we also set block_cycles so that
## almost every tree operation needs a relocation
#[cases.test_relocations_reentrant]
#reentrant = true
## TODO fix this case, caused by non-DAG trees
## NOTE the second condition is required
#if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
#defines = [
# {FILES=6, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
# {FILES=26, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
# {FILES=3, DEPTH=3, CYCLES=20, BLOCK_CYCLES=1},
#]
#code = '''
# lfs_t lfs;
# int err = lfs_mount(&lfs, cfg);
# if (err) {
# lfs_format(&lfs, cfg) => 0;
# lfs_mount(&lfs, cfg) => 0;
# }
#
# uint32_t prng = 1;
# const char alpha[] = "abcdefghijklmnopqrstuvwxyz";
# for (unsigned i = 0; i < CYCLES; i++) {
# // create random path
# char full_path[256];
# for (unsigned d = 0; d < DEPTH; d++) {
# sprintf(&full_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
# }
#
# // if it does not exist, we create it, else we destroy
# struct lfs_info info;
# int res = lfs_stat(&lfs, full_path, &info);
# if (res == LFS_ERR_NOENT) {
# // create each directory in turn, ignore if dir already exists
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# err = lfs_mkdir(&lfs, path);
# assert(!err || err == LFS_ERR_EXIST);
# }
#
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# lfs_stat(&lfs, path, &info) => 0;
# assert(strcmp(info.name, &path[2*d+1]) == 0);
# assert(info.type == LFS_TYPE_DIR);
# }
# } else {
# // is valid dir?
# assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
# assert(info.type == LFS_TYPE_DIR);
#
# // try to delete path in reverse order, ignore if dir is not empty
# for (unsigned d = DEPTH-1; d+1 > 0; d--) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# err = lfs_remove(&lfs, path);
# assert(!err || err == LFS_ERR_NOTEMPTY);
# }
#
# lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
# }
# }
# lfs_unmount(&lfs) => 0;
#'''
#
## reentrant testing for relocations, but now with random renames!
#[cases.test_relocations_reentrant_renames]
#reentrant = true
## TODO fix this case, caused by non-DAG trees
## NOTE the second condition is required
#if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
#defines = [
# {FILES=6, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
# {FILES=26, DEPTH=1, CYCLES=20, BLOCK_CYCLES=1},
# {FILES=3, DEPTH=3, CYCLES=20, BLOCK_CYCLES=1},
#]
#code = '''
# lfs_t lfs;
# int err = lfs_mount(&lfs, cfg);
# if (err) {
# lfs_format(&lfs, cfg) => 0;
# lfs_mount(&lfs, cfg) => 0;
# }
#
# uint32_t prng = 1;
# const char alpha[] = "abcdefghijklmnopqrstuvwxyz";
# for (unsigned i = 0; i < CYCLES; i++) {
# // create random path
# char full_path[256];
# for (unsigned d = 0; d < DEPTH; d++) {
# sprintf(&full_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
# }
#
# // if it does not exist, we create it, else we destroy
# struct lfs_info info;
# int res = lfs_stat(&lfs, full_path, &info);
# assert(!res || res == LFS_ERR_NOENT);
# if (res == LFS_ERR_NOENT) {
# // create each directory in turn, ignore if dir already exists
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# err = lfs_mkdir(&lfs, path);
# assert(!err || err == LFS_ERR_EXIST);
# }
#
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# lfs_stat(&lfs, path, &info) => 0;
# assert(strcmp(info.name, &path[2*d+1]) == 0);
# assert(info.type == LFS_TYPE_DIR);
# }
# } else {
# assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
# assert(info.type == LFS_TYPE_DIR);
#
# // create new random path
# char new_path[256];
# for (unsigned d = 0; d < DEPTH; d++) {
# sprintf(&new_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
# }
#
# // if new path does not exist, rename, otherwise destroy
# res = lfs_stat(&lfs, new_path, &info);
# assert(!res || res == LFS_ERR_NOENT);
# if (res == LFS_ERR_NOENT) {
# // stop once some dir is renamed
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(&path[2*d], &full_path[2*d]);
# path[2*d+2] = '\0';
# strcpy(&path[128+2*d], &new_path[2*d]);
# path[128+2*d+2] = '\0';
# err = lfs_rename(&lfs, path, path+128);
# assert(!err || err == LFS_ERR_NOTEMPTY);
# if (!err) {
# strcpy(path, path+128);
# }
# }
#
# for (unsigned d = 0; d < DEPTH; d++) {
# char path[1024];
# strcpy(path, new_path);
# path[2*d+2] = '\0';
# lfs_stat(&lfs, path, &info) => 0;
# assert(strcmp(info.name, &path[2*d+1]) == 0);
# assert(info.type == LFS_TYPE_DIR);
# }
#
# lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
# } else {
# // try to delete path in reverse order,
# // ignore if dir is not empty
# for (unsigned d = DEPTH-1; d+1 > 0; d--) {
# char path[1024];
# strcpy(path, full_path);
# path[2*d+2] = '\0';
# err = lfs_remove(&lfs, path);
# assert(!err || err == LFS_ERR_NOTEMPTY);
# }
#
# lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
# }
# }
# }
# lfs_unmount(&lfs) => 0;
#'''