60 lines
1.8 KiB
Rust
60 lines
1.8 KiB
Rust
use rhai::{Engine, EvalAltResult, INT};
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#[cfg(not(feature = "no_float"))]
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use rhai::FLOAT;
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#[cfg(not(feature = "no_float"))]
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const EPSILON: FLOAT = 0.000_001;
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#[test]
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fn test_power_of() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("2 ** 3")?, 8);
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assert_eq!(engine.eval::<INT>("(-2 ** 3)")?, -8);
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assert_eq!(engine.eval::<INT>("2 ** 3 ** 2")?, 512);
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#[cfg(not(feature = "no_float"))]
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{
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assert!(
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(engine.eval::<FLOAT>("2.2 ** 3.3")? - 13.489_468_760_533_386 as FLOAT).abs()
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<= EPSILON
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);
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assert!((engine.eval::<FLOAT>("2.0**-2.0")? - 0.25 as FLOAT).abs() < EPSILON);
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assert!((engine.eval::<FLOAT>("(-2.0**-2.0)")? - 0.25 as FLOAT).abs() < EPSILON);
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assert!((engine.eval::<FLOAT>("(-2.0**-2)")? - 0.25 as FLOAT).abs() < EPSILON);
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assert_eq!(engine.eval::<INT>("4**3")?, 64);
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}
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Ok(())
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}
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#[test]
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fn test_power_of_equals() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("let x = 2; x **= 3; x")?, 8);
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assert_eq!(engine.eval::<INT>("let x = -2; x **= 3; x")?, -8);
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#[cfg(not(feature = "no_float"))]
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{
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assert!(
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(engine.eval::<FLOAT>("let x = 2.2; x **= 3.3; x")? - 13.489_468_760_533_386 as FLOAT)
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.abs()
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<= EPSILON
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);
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assert!(
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(engine.eval::<FLOAT>("let x = 2.0; x **= -2.0; x")? - 0.25 as FLOAT).abs() < EPSILON
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);
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assert!(
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(engine.eval::<FLOAT>("let x = -2.0; x **= -2.0; x")? - 0.25 as FLOAT).abs() < EPSILON
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);
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assert!(
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(engine.eval::<FLOAT>("let x = -2.0; x **= -2; x")? - 0.25 as FLOAT).abs() < EPSILON
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);
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assert_eq!(engine.eval::<INT>("let x =4; x **= 3; x")?, 64);
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}
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Ok(())
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}
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