# Test Case: Long-prefix user xattr

**Test ID**: TC077-long-prefix-user-xattr
**Fixture**: `basic.erofs`, `/prefix-user-0`, `/prefix-user-1`

## Objective

Verify reconstruction of a long user name from packed prefix ID 0. The helper
must self-check prefix record base index 1 and infix
`repo22.application.component.`.

## Manual steps

```sh
lsextattr user /mnt/repo22-g4/prefix-user-0
getextattr -qq -x user repo22.application.component.setting \
  /mnt/repo22-g4/prefix-user-0
getextattr -qq -x user repo22.application.component.setting \
  /mnt/repo22-g4/prefix-user-1
```

## Expected results

The full name is listed once and the values are `prefix-value-0` and
`prefix-value-1`. Unmount and detach.