erofs-freebsd-out-tree/tests/TC020-compact-inode-basic.md

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:

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.