rhai/tests/if_block.rs

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

#[test]
fn test_if() -> Result<(), Box<EvalAltResult>> {
    let engine = Engine::new();

    assert_eq!(engine.eval::<INT>("if true { 55 }")?, 55);
    assert_eq!(engine.eval::<INT>("if false { 55 } else { 44 }")?, 44);
    assert_eq!(engine.eval::<INT>("if true { 55 } else { 44 }")?, 55);
    assert_eq!(
        engine.eval::<INT>("if false { 55 } else if true { 33 } else { 44 }")?,
        33
    );
    assert_eq!(
        engine.eval::<INT>(
            r"
                if false { 55 }
                else if false { 33 }
                else if false { 66 }
                else if false { 77 }
                else if false { 88 }
                else { 44 }
        "
        )?,
        44
    );

    Ok(())
}

#[test]
fn test_if_expr() -> Result<(), Box<EvalAltResult>> {
    let engine = Engine::new();

    assert_eq!(
        engine.eval::<INT>(
            r"
                let x = 42;
                let y = 1 + if x > 40 { 100 } else { 0 } / x;
                y
        "
        )?,
        3
    );

    Ok(())
}