What is the best & easy way to write tests to know that an observable emits N values in order? I would like to do it like in RxDart

[MiniSuperDev]

Hello, I am migrating from RxDart to RxJs with typescript, I would like to know what is the best and easy way to write tests to know that an observable emits N values in order.

I see there is marble-testing but I'm looking for something more simple or similar to how it was done in dart.

For example in RxDart, it was very intuitive using expect with emitsInOrder or any of the stream matchers, but I don't see anything similar in typescript.

https://github.com/ReactiveX/rxdart/blob/master/test/streams/sequence_equals_test.dart#L7-L12
https://github.com/ReactiveX/rxdart/blob/master/test/streams/combine_latest_test.dart#L21-L36

Thank you

[kwonoj]

Marble testing is not a mandatory requirement, you could grab values via subscribing test scheduler and compare values. There are 3rd party testing framework like rx-sandbox (https://github.com/kwonoj/rx-sandbox#getting-values-from-observable) as well allows to use plain testmessage assertion.

disclaimer: I wrote rx-sandbox.