rhai/tests/method_call.rs

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#![cfg(not(feature = "no_object"))]
use rhai::{Engine, EvalAltResult, INT};
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#[derive(Debug, Clone, Eq, PartialEq)]
struct TestStruct {
x: INT,
}
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impl TestStruct {
fn update(&mut self, n: INT) {
self.x += n;
}
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fn new() -> Self {
Self { x: 1 }
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}
}
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#[test]
fn test_method_call() -> Result<(), Box<EvalAltResult>> {
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let mut engine = Engine::new();
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engine
.register_type::<TestStruct>()
.register_fn("update", TestStruct::update)
.register_fn("new_ts", TestStruct::new);
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assert_eq!(
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engine.eval::<TestStruct>("let x = new_ts(); x.update(1000); x")?,
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TestStruct { x: 1001 }
);
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assert_eq!(
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engine.eval::<TestStruct>("let x = new_ts(); update(x, 1000); x")?,
TestStruct { x: 1001 }
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);
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Ok(())
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}
#[test]
fn test_method_call_style() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(engine.eval::<INT>("let x = -123; x.abs(); x")?, -123);
Ok(())
}
#[cfg(not(feature = "no_optimize"))]
#[test]
fn test_method_call_with_full_optimization() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
engine.set_optimization_level(rhai::OptimizationLevel::Full);
engine
.register_fn("new_ts", || TestStruct::new())
.register_fn("ymd", |_: INT, _: INT, _: INT| 42 as INT)
.register_fn("range", |_: &mut TestStruct, _: INT, _: INT| {
TestStruct::new()
});
assert_eq!(
engine.eval::<TestStruct>(
"
let xs = new_ts();
let ys = xs.range(ymd(2022, 2, 1), ymd(2022, 2, 2));
ys
"
)?,
TestStruct::new()
);
Ok(())
}