let root = (mktemp --directory | str trim)
^jj git init --colocate $root | ignore
$env.JJ_USER = "Differ Fixture"
$env.JJ_EMAIL = "fixture@example.invalid"
$env.JJ_COMMITTER_NAME = "Differ Fixture"
$env.JJ_COMMITTER_EMAIL = "fixture@example.invalid"
let source = ($root | path join "src")
mkdir $source
"fn before() {}\n" | save ($source | path join "lib.rs")
'{"before": true}\n' | save ($root | path join "data.json")
"text before\n" | save ($root | path join "unknown.ext")
"fn after() {}\n" | save --force ($source | path join "lib.rs")
^jj --repository $root commit -m "fixture base" | ignore
"fn after_changed() {}\n" | save --force ($source | path join "lib.rs")
^jj --repository $root commit -m "fixture worklet" | ignore
^jj --repository $root bookmark set feature -r @- | ignore
"fn after_second_change() {}\n" | save --force ($source | path join "lib.rs")
^jj --repository $root describe -m "fixture change

This worklet changes the Rust fixture.
" | ignore
^jj --repository $root bookmark set main -r @-- | ignore
^jj --repository $root bookmark set feature -r @ | ignore
$root