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use crate::{driver::Driver, TypeGenerator, TypeGeneratorWithParams, ValueGenerator}; #[derive(Debug)] pub struct BooleanGenerator { weight: f32, } impl Default for BooleanGenerator { fn default() -> Self { Self { weight: 0.5 } } } impl ValueGenerator for bool { type Output = bool; fn generate<D: Driver>(&self, _driver: &mut D) -> Option<Self::Output> { Some(*self) } } impl BooleanGenerator { pub fn weight(mut self, weight: f32) -> Self { assert!(0.0 <= weight && weight <= 1.0); self.weight = weight; self } } impl TypeGeneratorWithParams for bool { type Output = BooleanGenerator; fn gen_with() -> Self::Output { Default::default() } } impl ValueGenerator for BooleanGenerator { type Output = bool; fn generate<D: Driver>(&self, driver: &mut D) -> Option<Self::Output> { let value = driver.gen::<u32>()? as f32 / core::u32::MAX as f32; Some(value < self.weight) } } impl TypeGenerator for bool { fn generate<D: Driver>(driver: &mut D) -> Option<Self> { Some(driver.gen::<u8>()? > (core::u8::MAX / 2)) } } #[test] fn bool_test() { let _ = generator_test!(gen::<bool>()); } #[test] fn bool_with_test() { let _ = generator_test!(gen::<bool>().with().weight(0.1)); }