rhai/tests/ops.rs

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use rhai::{Engine, EvalAltResult, Scope, INT};
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#[test]
fn test_ops() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("60 + 5")?, 65);
assert_eq!(engine.eval::<INT>("(1 + 2) * (6 - 4) / 2")?, 3);
assert_eq!(engine.eval::<INT>("let x = 41; x = x + 1; x")?, 42);
assert_eq!(
engine.eval::<String>(r#"let s = "hello"; s = s + 42; s"#)?,
"hello42"
);
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Ok(())
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}
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#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
#[test]
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fn test_ops_other_number_types() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
let mut scope = Scope::new();
scope.push("x", 42_u16);
assert!(matches!(
*engine.eval_with_scope::<bool>(&mut scope, "x == 42").expect_err("should error"),
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EvalAltResult::ErrorFunctionNotFound(f, ..) if f.starts_with("== (u16,")
));
#[cfg(not(feature = "no_float"))]
assert!(matches!(
*engine.eval_with_scope::<bool>(&mut scope, "x == 42.0").expect_err("should error"),
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EvalAltResult::ErrorFunctionNotFound(f, ..) if f.starts_with("== (u16,")
));
assert!(!engine.eval_with_scope::<bool>(&mut scope, r#"x == "hello""#)?);
Ok(())
}
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#[test]
fn test_ops_strings() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert!(engine.eval::<bool>(r#""hello" > 'c'"#)?);
assert!(engine.eval::<bool>(r#""" < 'c'"#)?);
assert!(engine.eval::<bool>(r#"'x' > "hello""#)?);
assert!(engine.eval::<bool>(r#""hello" > "foo""#)?);
Ok(())
}
#[test]
fn test_ops_precedence() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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assert_eq!(
engine.eval::<INT>("let x = 0; if x == 10 || true { x = 1} x")?,
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1
);
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Ok(())
}