rhai/tests/decrement.rs
2020-06-08 14:10:06 +08:00

16 lines
460 B
Rust

use rhai::{Engine, EvalAltResult, INT};
#[test]
fn test_decrement() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(engine.eval::<INT>("let x = 10; x -= 7; x")?, 3);
assert!(matches!(
*engine.eval::<String>(r#"let s = "test"; s -= "ing"; s"#).expect_err("expects error"),
EvalAltResult::ErrorFunctionNotFound(err, _) if err == "- (&str | ImmutableString, &str | ImmutableString)"
));
Ok(())
}