## simple truncate
#[cases.test_truncate_simple]
#defines.MEDIUMSIZE = [32, 2048]
#defines.LARGESIZE = 8192
#code = '''
#    lfs_t lfs;
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_t file;
#    lfs_file_open(&lfs, &file, "baldynoop",
#            LFS_O_WRONLY | LFS_O_CREAT) => 0;
#
#    uint8_t buffer[1024];
#    strcpy((char*)buffer, "hair");
#    size_t size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < LARGESIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#    
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldynoop", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_truncate(&lfs, &file, MEDIUMSIZE) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldynoop", LFS_O_RDONLY) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    size = strlen("hair");
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "hair", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#'''
#
## truncate and read
#[cases.test_truncate_read]
#defines.MEDIUMSIZE = [32, 2048]
#defines.LARGESIZE = 8192
#code = '''
#    lfs_t lfs;
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_t file;
#    lfs_file_open(&lfs, &file, "baldyread",
#            LFS_O_WRONLY | LFS_O_CREAT) => 0;
#
#    uint8_t buffer[1024];
#    strcpy((char*)buffer, "hair");
#    size_t size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < LARGESIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldyread", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_truncate(&lfs, &file, MEDIUMSIZE) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    size = strlen("hair");
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "hair", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldyread", LFS_O_RDONLY) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    size = strlen("hair");
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "hair", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#'''
#
## write, truncate, and read
#[cases.test_truncate_write_read]
#code = '''
#    lfs_t lfs;
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_t file;
#    lfs_file_open(&lfs, &file, "sequence",
#            LFS_O_RDWR | LFS_O_CREAT | LFS_O_TRUNC) => 0;
#
#    uint8_t buffer[1024];
#    size_t size = lfs_min(lfs.cfg->cache_size, sizeof(buffer)/2);
#    lfs_size_t qsize = size / 4;
#    uint8_t *wb = buffer;
#    uint8_t *rb = buffer + size;
#    for (lfs_off_t j = 0; j < size; ++j) {
#        wb[j] = j;
#    }
#
#    /* Spread sequence over size */
#    lfs_file_write(&lfs, &file, wb, size) => size;
#    lfs_file_size(&lfs, &file) => size;
#    lfs_file_tell(&lfs, &file) => size;
#
#    lfs_file_seek(&lfs, &file, 0, LFS_SEEK_SET) => 0;
#    lfs_file_tell(&lfs, &file) => 0;
#
#    /* Chop off the last quarter */
#    lfs_size_t trunc = size - qsize;
#    lfs_file_truncate(&lfs, &file, trunc) => 0;
#    lfs_file_tell(&lfs, &file) => 0;
#    lfs_file_size(&lfs, &file) => trunc;
#
#    /* Read should produce first 3/4 */
#    lfs_file_read(&lfs, &file, rb, size) => trunc;
#    memcmp(rb, wb, trunc) => 0;
#
#    /* Move to 1/4 */
#    lfs_file_size(&lfs, &file) => trunc;
#    lfs_file_seek(&lfs, &file, qsize, LFS_SEEK_SET) => qsize;
#    lfs_file_tell(&lfs, &file) => qsize;
#
#    /* Chop to 1/2 */
#    trunc -= qsize;
#    lfs_file_truncate(&lfs, &file, trunc) => 0;
#    lfs_file_tell(&lfs, &file) => qsize;
#    lfs_file_size(&lfs, &file) => trunc;
#    
#    /* Read should produce second quarter */
#    lfs_file_read(&lfs, &file, rb, size) => trunc - qsize;
#    memcmp(rb, wb + qsize, trunc - qsize) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#'''
#
## truncate and write
#[cases.test_truncate_write]
#defines.MEDIUMSIZE = [32, 2048]
#defines.LARGESIZE = 8192
#code = '''
#    lfs_t lfs;
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_t file;
#    lfs_file_open(&lfs, &file, "baldywrite",
#            LFS_O_WRONLY | LFS_O_CREAT) => 0;
#
#    uint8_t buffer[1024];
#    strcpy((char*)buffer, "hair");
#    size_t size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < LARGESIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldywrite", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#
#    lfs_file_truncate(&lfs, &file, MEDIUMSIZE) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    strcpy((char*)buffer, "bald");
#    size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldywrite", LFS_O_RDONLY) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    size = strlen("bald");
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "bald", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#'''
#
## truncate write under powerloss
#[cases.test_truncate_reentrant_write]
#defines.SMALLSIZE = [4, 512]
#defines.MEDIUMSIZE = [32, 1024]
#defines.LARGESIZE = 2048
#reentrant = true
#code = '''
#    lfs_t lfs;
#    int err = lfs_mount(&lfs, cfg);
#    if (err) {
#        lfs_format(&lfs, cfg) => 0;
#        lfs_mount(&lfs, cfg) => 0;
#    }
#    lfs_file_t file;
#    err = lfs_file_open(&lfs, &file, "baldy", LFS_O_RDONLY);
#    assert(!err || err == LFS_ERR_NOENT);
#    if (!err) {
#        size_t size = lfs_file_size(&lfs, &file);
#        assert(size == 0 ||
#                size == (size_t)LARGESIZE ||
#                size == (size_t)MEDIUMSIZE ||
#                size == (size_t)SMALLSIZE);
#        for (lfs_off_t j = 0; j < size; j += 4) {
#            uint8_t buffer[1024];
#            lfs_file_read(&lfs, &file, buffer, 4) => 4;
#            assert(memcmp(buffer, "hair", 4) == 0 ||
#                   memcmp(buffer, "bald", 4) == 0 ||
#                   memcmp(buffer, "comb", 4) == 0);
#        }
#        lfs_file_close(&lfs, &file) => 0;
#    }
#
#    lfs_file_open(&lfs, &file, "baldy",
#            LFS_O_WRONLY | LFS_O_CREAT | LFS_O_TRUNC) => 0;
#    lfs_file_size(&lfs, &file) => 0;
#    uint8_t buffer[1024];
#    strcpy((char*)buffer, "hair");
#    size_t size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < LARGESIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#    lfs_file_close(&lfs, &file) => 0;
#
#    lfs_file_open(&lfs, &file, "baldy", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => LARGESIZE;
#    lfs_file_truncate(&lfs, &file, MEDIUMSIZE) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#    strcpy((char*)buffer, "bald");
#    size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#    lfs_file_close(&lfs, &file) => 0;
#
#    lfs_file_open(&lfs, &file, "baldy", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#    lfs_file_truncate(&lfs, &file, SMALLSIZE) => 0;
#    lfs_file_size(&lfs, &file) => SMALLSIZE;
#    strcpy((char*)buffer, "comb");
#    size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < SMALLSIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#    }
#    lfs_file_size(&lfs, &file) => SMALLSIZE;
#    lfs_file_close(&lfs, &file) => 0;
#
#    lfs_unmount(&lfs) => 0;
#'''
#
## more aggressive general truncation tests
#[cases.test_truncate_aggressive]
#defines.CONFIG = 'range(6)'
#defines.SMALLSIZE = 32
#defines.MEDIUMSIZE = 2048
#defines.LARGESIZE = 8192
#code = '''
#    lfs_t lfs;
#    #define COUNT 5
#    const struct {
#        lfs_off_t startsizes[COUNT];
#        lfs_off_t startseeks[COUNT];
#        lfs_off_t hotsizes[COUNT];
#        lfs_off_t coldsizes[COUNT];
#    } configs[] = {
#        // cold shrinking
#        {{2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE}},
#        // cold expanding
#        {{2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE}},
#        // warm shrinking truncate
#        {{2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE},
#         {          0,           0,           0,           0,           0}},
#        // warm expanding truncate
#        {{          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE},
#         {          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE}},
#        // mid-file shrinking truncate
#        {{2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {  LARGESIZE,   LARGESIZE,   LARGESIZE,   LARGESIZE,   LARGESIZE},
#         {          0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE, 2*LARGESIZE},
#         {          0,           0,           0,           0,           0}},
#        // mid-file expanding truncate
#        {{          0,   SMALLSIZE,   MEDIUMSIZE,  LARGESIZE, 2*LARGESIZE},
#         {          0,           0,   SMALLSIZE,  MEDIUMSIZE,   LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE},
#         {2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE, 2*LARGESIZE}},
#    };
#
#    const lfs_off_t *startsizes = configs[CONFIG].startsizes;
#    const lfs_off_t *startseeks = configs[CONFIG].startseeks;
#    const lfs_off_t *hotsizes   = configs[CONFIG].hotsizes;
#    const lfs_off_t *coldsizes  = configs[CONFIG].coldsizes;
#
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#
#    for (unsigned i = 0; i < COUNT; i++) {
#        char path[1024];
#        sprintf(path, "hairyhead%d", i);
#        lfs_file_t file;
#        lfs_file_open(&lfs, &file, path,
#                LFS_O_WRONLY | LFS_O_CREAT | LFS_O_TRUNC) => 0;
#
#        uint8_t buffer[1024];
#        strcpy((char*)buffer, "hair");
#        size_t size = strlen((char*)buffer);
#        for (lfs_off_t j = 0; j < startsizes[i]; j += size) {
#            lfs_file_write(&lfs, &file, buffer, size) => size;
#        }
#        lfs_file_size(&lfs, &file) => startsizes[i];
#
#        if (startseeks[i] != startsizes[i]) {
#            lfs_file_seek(&lfs, &file,
#                    startseeks[i], LFS_SEEK_SET) => startseeks[i];
#        }
#
#        lfs_file_truncate(&lfs, &file, hotsizes[i]) => 0;
#        lfs_file_size(&lfs, &file) => hotsizes[i];
#
#        lfs_file_close(&lfs, &file) => 0;
#    }
#
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#
#    for (unsigned i = 0; i < COUNT; i++) {
#        char path[1024];
#        sprintf(path, "hairyhead%d", i);
#        lfs_file_t file;
#        lfs_file_open(&lfs, &file, path, LFS_O_RDWR) => 0;
#        lfs_file_size(&lfs, &file) => hotsizes[i];
#
#        size_t size = strlen("hair");
#        lfs_off_t j = 0;
#        for (; j < startsizes[i] && j < hotsizes[i]; j += size) {
#            uint8_t buffer[1024];
#            lfs_file_read(&lfs, &file, buffer, size) => size;
#            memcmp(buffer, "hair", size) => 0;
#        }
#
#        for (; j < hotsizes[i]; j += size) {
#            uint8_t buffer[1024];
#            lfs_file_read(&lfs, &file, buffer, size) => size;
#            memcmp(buffer, "\0\0\0\0", size) => 0;
#        }
#
#        lfs_file_truncate(&lfs, &file, coldsizes[i]) => 0;
#        lfs_file_size(&lfs, &file) => coldsizes[i];
#
#        lfs_file_close(&lfs, &file) => 0;
#    }
#
#    lfs_unmount(&lfs) => 0;
#
#    lfs_mount(&lfs, cfg) => 0;
#
#    for (unsigned i = 0; i < COUNT; i++) {
#        char path[1024];
#        sprintf(path, "hairyhead%d", i);
#        lfs_file_t file;
#        lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
#        lfs_file_size(&lfs, &file) => coldsizes[i];
#
#        size_t size = strlen("hair");
#        lfs_off_t j = 0;
#        for (; j < startsizes[i] && j < hotsizes[i] && j < coldsizes[i];
#                j += size) {
#            uint8_t buffer[1024];
#            lfs_file_read(&lfs, &file, buffer, size) => size;
#            memcmp(buffer, "hair", size) => 0;
#        }
#
#        for (; j < coldsizes[i]; j += size) {
#            uint8_t buffer[1024];
#            lfs_file_read(&lfs, &file, buffer, size) => size;
#            memcmp(buffer, "\0\0\0\0", size) => 0;
#        }
#
#        lfs_file_close(&lfs, &file) => 0;
#    }
#
#    lfs_unmount(&lfs) => 0;
#'''
#
## noop truncate
#[cases.test_truncate_nop]
#defines.MEDIUMSIZE = [32, 2048]
#code = '''
#    lfs_t lfs;
#    lfs_format(&lfs, cfg) => 0;
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_t file;
#    lfs_file_open(&lfs, &file, "baldynoop",
#            LFS_O_RDWR | LFS_O_CREAT) => 0;
#
#    uint8_t buffer[1024];
#    strcpy((char*)buffer, "hair");
#    size_t size = strlen((char*)buffer);
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_write(&lfs, &file, buffer, size) => size;
#
#        // this truncate should do nothing
#        lfs_file_truncate(&lfs, &file, j+size) => 0;
#    }
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    lfs_file_seek(&lfs, &file, 0, LFS_SEEK_SET) => 0;
#    // should do nothing again
#    lfs_file_truncate(&lfs, &file, MEDIUMSIZE) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "hair", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#
#    // still there after reboot?
#    lfs_mount(&lfs, cfg) => 0;
#    lfs_file_open(&lfs, &file, "baldynoop", LFS_O_RDWR) => 0;
#    lfs_file_size(&lfs, &file) => MEDIUMSIZE;
#    for (lfs_off_t j = 0; j < MEDIUMSIZE; j += size) {
#        lfs_file_read(&lfs, &file, buffer, size) => size;
#        memcmp(buffer, "hair", size) => 0;
#    }
#    lfs_file_read(&lfs, &file, buffer, size) => 0;
#    lfs_file_close(&lfs, &file) => 0;
#    lfs_unmount(&lfs) => 0;
#'''