# Test Case: Compact Inode Decoding

**Test ID**: TC020-compact-inode-basic

## Objective

Verify a real 32-byte compact regular inode exposes correct mode, link count,
size, allocation, and source-exact data.

## Fixture

Use `images/compact.erofs` and `source/compact/small.txt`. The evidence records
the NID and asserts `inode_size=32`.

## Procedure

After mounting on `$mnt`:

```sh
stat -f 'ino=%i size=%z mode=%p nlink=%l blocks=%b mtime=%m' "$mnt/small.txt"
wc -c /tmp/repo22-g1/source/compact/small.txt "$mnt/small.txt"
cmp /tmp/repo22-g1/source/compact/small.txt "$mnt/small.txt"
sha256 /tmp/repo22-g1/source/compact/small.txt "$mnt/small.txt"
```

Unmount and detach the exact md unit.

## Expected Results

- The inode is compact, regular mode `0644`, link count 1, timestamp 0, and
  size equal to the source.
- Full content and hashes match; all operations and cleanup return zero.