Feature Request: Virtual time scheduler about effect HOT 5 CLOSED

Are you maybe looking for our TestClock? https://github.com/Effect-TS/effect/blob/main/packages/effect/src/TestClock.ts

from effect.

This also comes as part of our TestContext (https://github.com/Effect-TS/effect/blob/661004f4bf5f8b25f5a0678c21a3a822188ce461/packages/effect/src/TestContext.ts) which is also utilized by our @effect/vitest package.

from effect.

Closing this for now. Feel free to re-open if this didn't answer your question!

from effect.

It is almost the same, but actually, not:) RxJS VirtualTimeScheduler automatically tracks the time, while Effect TestClock requires user to manually adjust time.

VirtualTimeScheduler doesn't even have any methods to manually set time. The only method it offers is VirtualTimeScheduler.flush() which execute all of its queued actions and takes care of adjusting time. It is crucial when you have multiple parallel processes, each with different delays, and each of them wants to know the current time at different points of executions.

from effect.

Something like this. I know, it looks non realistic, but it's just a simple simulation of real world scenarios

const waitRandomTimeAndPrintCurrentTime = Effect.gen(function *(){
    const randomSleepTime = yield* Random.nextIntBetween(1000,5000);
    yield* Effect.sleep(randomSleepTime);
    const currentTime = yield* Clock.currentTimeMillis;
    yield* Console.log(currentTime);
})

const test = Effect.gen(function* () {

    yield* Effect.forkDaemon(waitRandomTimeAndPrintCurrentTime)
    yield* Effect.forkDaemon(waitRandomTimeAndPrintCurrentTime)

})

I would like to have something like TestClock.flush that will execute all the actions that are waiting for execution. Something like tick in event loop, but for fibers.

from effect.