# Test Case: Basic Mount and Unmount

**Test ID**: TC001-mount-basic

## Objective

Verify that the exact G1 KLD mounts a valid image read-only, exposes source
data exactly, and unmounts cleanly.

## Fixture

Use `images/compact.erofs` and `source/compact/root.txt` generated by
`tests/prepare_g1_fixtures.sh`. Follow `tests/G1-MANUAL-SETUP.md` and record the
image, source, and KLD SHA256 values.

## Procedure

```sh
image=/tmp/repo22-g1/images/compact.erofs
source=/tmp/repo22-g1/source/compact/root.txt
mnt=/mnt/repo22-g1-001
md=$(mdconfig -a -t vnode -f "$image")
mkdir -p "$mnt"
kldstat | grep -i erofs
mount -t erofs -o ro "/dev/$md" "$mnt"
mount -p | awk -v p="$mnt" '$2 == p'
cmp "$source" "$mnt/root.txt"
sha256 "$source" "$mnt/root.txt"
./statfs_probe "$mnt"
umount "$mnt"
mdconfig -d -u "${md#md}"
rmdir "$mnt"
```

## Expected Results

- Mount, `cmp`, `statfs_probe`, unmount, and detach all return zero.
- The mount entry is `erofs` and read-only; both file hashes are identical.
- Cleanup leaves neither this mount point nor its md provider.
