Trait WaitClock 

pub trait WaitClock {
    // Required methods
    fn elapsed(&self) -> Duration;
    fn pause(&mut self, delay: Duration);
}

What: The clock a lock wait reads and sleeps on: how long the wait has lasted, and a pause between two attempts. A trait is an interface a type implements. Why: A wait that reads the real clock prints as many notices as its polls happen to catch, so a test of the notices would depend on how the operating system schedules the process. A test hands the wait a clock that only moves when the wait pauses, and the notices then follow from the cadence alone.

In TS you’d write (pseudocode):

interface WaitClock { elapsedMs(): number; pause(delayMs: number): void }

Required Methods

fn elapsed(&self) -> Duration

How long the wait has lasted.

fn pause(&mut self, delay: Duration)

Wait delay before the next attempt.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl WaitClock for MonotonicClock