Struct futures_test::task::RecordSpawner

pub struct RecordSpawner { /* fields omitted */ }

An implementation of Spawn that records any Futures spawned on it.

Examples

#![feature(async_await, futures_api)]
use futures::task::SpawnExt;
use futures_test::task::{panic_context, RecordSpawner};

let mut recorder = RecordSpawner::new();

{
    let mut cx = panic_context();
    let cx = &mut cx.with_spawner(&mut recorder);
    cx.spawner().spawn(async { });
}

assert_eq!(recorder.spawned().len(), 1);

Methods

impl RecordSpawner

pub fn new() -> Self

Create a new instance

pub fn spawned(&self) -> &[FutureObj<'static, ()>]

Inspect any futures that were spawned onto this Spawn.

Trait Implementations

impl Debug for RecordSpawner

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Spawn for RecordSpawner

fn spawn_obj(     &mut self,     future: FutureObj<'static, ()> ) -> Result<(), SpawnObjError>

🔬 This is a nightly-only experimental API. (futures_api)

futures in libcore are unstable

Spawns a new task with the given future. The future will be polled until completion.

fn status(&self) -> Result<(), SpawnErrorKind>

🔬 This is a nightly-only experimental API. (futures_api)

futures in libcore are unstable

Determines whether the executor is able to spawn new tasks.

impl Default for RecordSpawner

fn default() -> Self

Returns the "default value" for a type.