In a previous post I talked about how to use Observable.throw to simulate an Observable error in a unit test. However, in RxJS 6, the syntax changed a bit. I also talked about this a bit in this post about using of to create Observables on the fly for testing in RxJS 6, but I … [Read more…]
Recently I had an Angular component that needed to be manually sized based on the window’s size. Admittedly, this is pretty annoying, but the user experience was so much better than anything I could come up with using straight CSS. It worked fine to get the dimensions of the window and calculate the width and … [Read more…]
In a previous post I talked about testing Observables in your Angular code. This is pretty common, because HttpClient sends back an Observable<T> – so if you want to spyOn that function, you’ll need to figure out how to return an Observable. I’ve been bouncing around a couple of projects/repos recently, and it turns out … [Read more…]
Say that you created a service that essentially wraps Angular’s HttpClient calls: And say that you called that in a component: And now you want to test the Get function to make sure that myValue is set to the value returned by the service. If you try to create a spy on the function in … [Read more…]