Struct MockRng 

pub struct MockRng { /* private fields */ }

Mock RNG with a fixed seed for deterministic behavior.

Example

use xerv_core::testing::MockRng;
use xerv_core::testing::RngProvider;

let rng = MockRng::seeded(42);
let first = rng.next_u64();
let second = rng.next_u64();

// Same seed produces same sequence
let rng2 = MockRng::seeded(42);
assert_eq!(rng2.next_u64(), first);
assert_eq!(rng2.next_u64(), second);

Implementations

impl MockRng

pub fn seeded(seed: u64) -> Self

Create a new mock RNG with the given seed.

pub fn seed(&self) -> u64

Get the seed used to create this RNG.

pub fn reset(&self)

Reset the RNG to its initial state.

Trait Implementations

impl RngProvider for MockRng

fn next_u64(&self) -> u64

Generate a random u64.

fn next_f64(&self) -> f64

Generate a random f64 in the range [0, 1).

fn fill_bytes(&self, dest: &mut [u8])

Fill a byte slice with random data.

fn is_mock(&self) -> bool

Check if this is a mock provider.

fn gen_bool(&self, probability: f64) -> bool

Generate a random boolean with the given probability of being true.

fn gen_range(&self, low: u64, high: u64) -> u64

Generate a random value in the given range.