Function babalcore::unwrap_now

pub fn unwrap_now(now: Option<Instant>) -> Instant

Return the time contained in the option if it is defined. If not (None was passed) returns the result of an actual call to Instant::now(). This is useful for testing: in mainstream production code, just pass None, but for testing it is possible to pass fake instants.

use std::time::Instant;
use babalcore::*;

// Use default.
let t1 = unwrap_now(None);
// Override with custom instant.
let t2 = unwrap_now(Some(Instant::now()));

assert!(t1 <= t2);