rhai/tests/switch.rs

use rhai::{Engine, EvalAltResult, Scope, INT};

#[test]
fn test_switch() -> Result<(), Box<EvalAltResult>> {
    let engine = Engine::new();
    let mut scope = Scope::new();
    scope.push("x", 42 as INT);

    assert_eq!(
        engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', 42 => true }")?,
        true
    );
    assert_eq!(
        engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', _ => true }")?,
        true
    );
    assert_eq!(
        engine.eval_with_scope::<()>(&mut scope, "switch x { 1 => 123, 2 => 'a' }")?,
        ()
    );
    assert_eq!(
        engine.eval_with_scope::<INT>(
            &mut scope,
            "switch x { 1 => 123, 42 => { x / 2 }, _ => 999 }"
        )?,
        21
    );
    #[cfg(not(feature = "no_index"))]
    assert_eq!(
        engine.eval_with_scope::<INT>(
            &mut scope,
            r"
                let y = [1, 2, 3];

                switch y {
                    42 => 1,
                    true => 2,
                    [1, 2, 3] => 3,
                    _ => 9
                }
            "
        )?,
        3
    );
    #[cfg(not(feature = "no_object"))]
    assert_eq!(
        engine.eval_with_scope::<INT>(
            &mut scope,
            r"
                let y = #{a:1, b:true, c:'x'};

                switch y {
                    42 => 1,
                    true => 2,
                    #{b:true, c:'x', a:1} => 3,
                    _ => 9
                }
            "
        )?,
        3
    );

    Ok(())
}