# Commit test fixture `Describe Changes` (in the `commit.message` toolbar) reads the commit being prepared and writes a message listing its files; the `markers` before-commit check reports a message without a `type: ` prefix and every `DO NOT COMMIT` added by the commit. Used by `cargo test -p ide-host --test plugin_commit` to exercise the `commit` interface and the optional `commit-checker` export. It is not a marketplace plugin.