67 lines
1.5 KiB
Rust
67 lines
1.5 KiB
Rust
#![cfg(not(feature = "no_float"))]
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use rhai::{Engine, EvalAltResult, RegisterFn, FLOAT};
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const EPSILON: FLOAT = 0.000_000_000_1;
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#[test]
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fn test_float() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert_eq!(
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engine.eval::<bool>("let x = 0.0; let y = 1.0; x < y")?,
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true
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);
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assert_eq!(
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engine.eval::<bool>("let x = 0.0; let y = 1.0; x > y")?,
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false
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);
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assert!((engine.eval::<FLOAT>("let x = 9.9999; x")? - 9.9999 as FLOAT).abs() < EPSILON);
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Ok(())
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}
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#[test]
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#[cfg(not(feature = "no_object"))]
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fn struct_with_float() -> Result<(), Box<EvalAltResult>> {
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#[derive(Clone)]
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struct TestStruct {
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x: f64,
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}
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impl TestStruct {
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fn update(&mut self) {
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self.x += 5.789_f64;
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}
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fn get_x(&mut self) -> f64 {
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self.x
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}
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fn set_x(&mut self, new_x: f64) {
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self.x = new_x;
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}
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fn new() -> Self {
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TestStruct { x: 1.0 }
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}
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}
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let mut engine = Engine::new();
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engine.register_type::<TestStruct>();
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engine.register_get_set("x", TestStruct::get_x, TestStruct::set_x);
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engine.register_fn("update", TestStruct::update);
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engine.register_fn("new_ts", TestStruct::new);
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assert!(
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(engine.eval::<FLOAT>("let ts = new_ts(); ts.update(); ts.x")? - 6.789).abs() < EPSILON
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);
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assert!(
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(engine.eval::<FLOAT>("let ts = new_ts(); ts.x = 10.1001; ts.x")? - 10.1001).abs()
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< EPSILON
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);
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Ok(())
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}
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