Trait bolero::Driver

pub trait Driver {
    fn mode(&self) -> DriverMode;
    fn fill_bytes(&mut self, bytes: &mut [u8]) -> Option<()>;

    fn gen<T>(&mut self) -> Option<T>
    where
        T: TypeGenerator,
    { ... }
}

Trait for driving the generation of a value

In a test engine, this is typically backed by a byte slice, but other drivers can be used instead, e.g. an RNG implementation.

Required methods

fn mode(&self) -> DriverMode

Return the mode set for the driver

fn fill_bytes(&mut self, bytes: &mut [u8]) -> Option<()>

Fill the target bytes with the driver state

Provided methods

fn gen<T>(&mut self) -> Option<T> where
    T: TypeGenerator, 

Generate a value with type T

Implementations on Foreign Types

impl<R> Driver for DirectRng<R> where
    R: RngCore, 

pub fn mode(&self) -> DriverMode

pub fn fill_bytes(&mut self, bytes: &mut [u8]) -> Option<()>

impl<R> Driver for ForcedRng<R> where
    R: RngCore, 

pub fn mode(&self) -> DriverMode

pub fn fill_bytes(&mut self, bytes: &mut [u8]) -> Option<()>

impl<'a> Driver for ByteSliceDriver<'a>

pub fn mode(&self) -> DriverMode

pub fn fill_bytes(&mut self, bytes: &mut [u8]) -> Option<()>

Implementors