improvise/crates/improvise-incremental/tests/maintained.rs

//! A maintained `Eager` against one rebuilt on every edit. Evidence:
//! `context/test-evidence/improvise-incremental.md`.

mod support;

use improvise_incremental::{Eager, differential};
use proptest::prelude::*;
use support::{Fresh, any_edit, hand_model};

proptest! {
    #[test]
    fn a_maintained_eager_equals_a_fresh_one_over_random_edit_sequences(
        edits in prop::collection::vec(any_edit(), 0..3)
    ) {
        let model = hand_model();
        let none = vec!["Region".to_string()];
        let fresh = Fresh {
            model: model.clone(),
            none: none.clone(),
            eager: Eager::new(model.clone(), none.clone()),
        };
        let run = differential(&model, &none, fresh, &edits);
        prop_assert!(run.is_ok(), "{}", run.unwrap_err());
    }
}