RxJS unit testing in Angular application. – Bluechip AI Asia, AI Development Company

In-depth look in RxJS unit testing

All possible methods to do unit tests for RxJS code in Angular

Simplest async testing with Jasmine ‘done’ callback

Testing by using virtual time (RxJS VirtualTimeScheduler) and fake time (Angular fakeAsync helper)

How to avoid additional arguments in methods under test by using AsyncScheduler/delegate trick

What is difference between VirtualTimeScheduler and TestScheduler

What is marble testing and how to use progressive time syntax in marble diagrams

How to reduce code boilerplate by using wrapper libs like jasmine-marbles and rxjs-marbles

What is difference between testing with TestScheduler flush() and new TestScheduler run() method?

Angular demo project with all reviewed code

Requirements

If you already tried to code unit tests for Observables – then you may be overwhelmed with a variety of methods on how to do that.

Which one is right for you?

Will it be jasmine with ‘done’ callback which we usually use for async code?

Or maybe TestScheduler?

Or you are going to use jasmine-marbles which is being mentioned in official Angular documentation?

I am not even naming other methods.

What is common for them and where they differ? How to put all of them in one solid picture in your head?

This is what I am going to do in my lessons – I will make you understand the system.

4 sections • 11 lectures • 54m total lengthExpand all sections