Struct ClosureClock 

pub struct ClosureClock<F>(pub F);

A clock that calls a supplied function on every read.

Tuple Fields

0: F

The function called on each read.

Trait Implementations

impl<F: Fn() -> SystemTime + Send + Sync> Clock for ClosureClock<F>

Available on crate feature test-utils only.

fn elapsed(&self) -> Duration

A supplied wall reading has no monotonic counterpart: it never advances.

fn sleep_until( &self, _at: SystemTime, ) -> Pin<Box<dyn Future<Output = Result<(), WallTimerError>> + Send>>

Nothing says when the function’s reading reaches a time.

fn now(&self) -> SystemTime

The wall clock’s current time.

fn deadline( &self, duration: Duration, ) -> Pin<Box<dyn Future<Output = ()> + Send>>

End once duration of elapsed time has passed: a deadline that work races, such as a sign-in’s wait for its callback or a stalled transfer’s, or an interval, such as the idle time between passes. System clocks use the runtime’s monotonic timer; controlled clocks wake only when their supplied time advances.

fn wait_out(&self, wait: Duration) -> Pin<Box<dyn Future<Output = ()> + Send>>

Wait out wait before trying again: a backoff, a provider’s cooldown, or the spacing between requests the code chose. It passes as a deadline of the same length does; a test’s clock may move its time to the wait’s end as the code arms it, since no work races it.