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Add test scenario for truncating to a block size

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When truncation is done on a file to the block size, there seems to be
an error where it points to an incorrect block. Perform a write /
truncate / readback operation to verify this issue.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
This commit is contained in:
Colin Foster
2023-01-26 11:26:37 -08:00
parent 6a53d76e90
commit 7b151e1abb
1 changed files with 34 additions and 0 deletions
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34
tests/test_truncate.toml
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@@ -437,3 +437,37 @@ code = '''
lfs_file_close(&lfs, &file) => 0;
lfs_unmount(&lfs) => 0;
'''
[[case]] # barrier truncate
code = '''
lfs_format(&lfs, &cfg) => 0;
lfs_mount(&lfs, &cfg) => 0;
lfs_file_open(&lfs, &file, "barrier",
LFS_O_RDWR | LFS_O_CREAT) => 0;
uint8_t bad_byte = 2;
uint8_t *rb = buffer + cfg.block_size;
/* Write a series of 1s to the first block */
memset(buffer, 1, cfg.block_size);
lfs_file_write(&lfs, &file, buffer,
cfg.block_size) => cfg.block_size;
/* Write a single non-one to the second block */
lfs_file_write(&lfs, &file, &bad_byte, 1) => 1;
lfs_file_close(&lfs, &file) => 0;
lfs_file_open(&lfs, &file, "barrier", LFS_O_RDWR) => 0;
lfs_file_truncate(&lfs, &file, cfg.block_size) => 0;
lfs_file_close(&lfs, &file) => 0;
/* Read the first block, which should match buffer */
lfs_file_open(&lfs, &file, "barrier", LFS_O_RDWR) => 0;
lfs_file_read(&lfs, &file, rb,
cfg.block_size) => cfg.block_size;
lfs_file_close(&lfs, &file) => 0;
lfs_unmount(&lfs) => 0;
memcmp(buffer, rb, cfg.block_size) => 0;
'''