Jest-preset-angular: Error when I use browser animations

[SrHuevo]

hello,

You should see the error here:

https://github.com/SrHuevo/error-jest-preset-bowser-animations-module

Greetings!

[thymikee]

So the error is gone if you remove this line:

fixture.detectChanges();

but I have no idea, what's going on. Maybe it's a bug in Angular which gets covered by a browser.

[SrHuevo]

fixture.detectChanges()

It is necesary to update the view, I believe that I couldn´t test whithout that.

If I do not use jest then it works

[thymikee]

Yeah, I've seen its working in Karma, just not sure what's the problem. The error comes from Angular, like it needs some extra provider (I understand it should be included by the animation class). If you have some time to dig into it, that would be great.

[SrHuevo]

I tried, but I do not have enough knowledge. The only thing I have discovered is that in the test, BrowserAnimationsModule is not defined, whereas in app.module it is defined

[thymikee]

It's a bug in a preset, which I'll address later. To temporarily fix it, just move animations key above styleUrls

[SrHuevo]

great!, thanks @thymikee With this I can continue 😁