#![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
//! xfig's Unit/Scale settings: the units box label and `view.set_scale`.

use rustfig_engine::Engine;
use serde_json::json;

#[test]
fn units_box_label_follows_units_and_scale() {
    let mut e = Engine::new();
    assert_eq!(e.unit_label(), "1in = 1.00in");
    e.execute("doc.set_units", &json!({"units": "metric"})).unwrap();
    assert_eq!(e.unit_label(), "1cm = 1.00cm");
    e.execute("view.set_scale", &json!({"unit": "m", "scale": 2.0}))
        .unwrap();
    assert_eq!(e.unit_label(), "1cm = 2.00m");
    for bad in [
        json!({"scale": 0}),
        json!({"scale": -3}),
        json!({"scale": f64::MAX}),
        json!({"unit": "a very long unit name"}),
        json!({"unit": "a\nb"}),
        json!({"decimal": "yes"}),
    ] {
        assert!(e.execute("view.set_scale", &bad).is_err(), "{bad}");
    }
    assert_eq!(e.unit_label(), "1cm = 2.00m");
}