pub struct FakeClock { /* private fields */ }
Expand description

A fake Clock for unit tests that can be advanced manually.

Each call to FakeClock::timestamp_ns will advance by one nanosecond.

Example

let clock = FakeClock::new();
assert_eq!(clock.timestamp_ns(), 0);
assert_eq!(clock.timestamp_ns(), 1);
assert_eq!(clock.timestamp_ns(), 2);
clock.advance_by(std::time::Duration::from_nanos(5));
assert_eq!(clock.timestamp_ns(), 8);

Implementations§

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impl FakeClock

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pub fn new() -> Self

Create a new FakeClock initialized with a zero timestamp.

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impl FakeClock

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pub fn advance_by(&self, duration: Duration)

Advance the clock’s internal time by duration.

Trait Implementations§

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impl Clock for FakeClock

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fn timestamp_ns(&self) -> i64

Returns the current timestamp and advances it by one.

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impl Default for FakeClock

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fn default() -> FakeClock

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.