55 lines
1.6 KiB
Rust
55 lines
1.6 KiB
Rust
use rhai::{Engine, EvalAltResult, Scope, INT};
|
|
|
|
#[test]
|
|
fn test_var_scope() -> Result<(), Box<EvalAltResult>> {
|
|
let engine = Engine::new();
|
|
let mut scope = Scope::new();
|
|
|
|
engine.eval_with_scope::<()>(&mut scope, "let x = 4 + 5")?;
|
|
assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x")?, 9);
|
|
engine.eval_with_scope::<()>(&mut scope, "x = x + 1; x = x + 2;")?;
|
|
assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x")?, 12);
|
|
|
|
scope.set_value("x", 42 as INT);
|
|
assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x")?, 42);
|
|
|
|
engine.eval_with_scope::<()>(&mut scope, "{let x = 3}")?;
|
|
assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x")?, 42);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn test_scope_eval() -> Result<(), Box<EvalAltResult>> {
|
|
let engine = Engine::new();
|
|
|
|
// First create the state
|
|
let mut scope = Scope::new();
|
|
|
|
// Then push some initialized variables into the state
|
|
// NOTE: Remember the default numbers used by Rhai are INT and f64.
|
|
// Better stick to them or it gets hard to work with other variables in the script.
|
|
scope.push("y", 42 as INT);
|
|
scope.push("z", 999 as INT);
|
|
|
|
// First invocation
|
|
engine
|
|
.eval_with_scope::<()>(&mut scope, " let x = 4 + 5 - y + z; y = 1;")
|
|
.expect("y and z not found?");
|
|
|
|
// Second invocation using the same state
|
|
let result = engine.eval_with_scope::<INT>(&mut scope, "x")?;
|
|
|
|
println!("result: {}", result); // should print 966
|
|
|
|
// Variable y is changed in the script
|
|
assert_eq!(
|
|
scope
|
|
.get_value::<INT>("y")
|
|
.expect("variable y should exist"),
|
|
1
|
|
);
|
|
|
|
Ok(())
|
|
}
|