RxJS Marble testing: expectObservable vs toBeObservable

Question

What is the difference between:

expectObservable(e1.merge(e2)).toBe(expected);

and

expect(e1.merge(e2)).toBeObservable(expected);

syntax?

Is it matter of a testing library or just a flavor?

score 2 · Answer 1 · answered Oct 17 '19 at 01:45

2

Based on my usage: toBeObservable is from third party library, jasmine-marbles

expectObservable is from build in rxjs module: TestScheduler.

answered Oct 17 '19 at 01:45

Chris Bao

score 1 · Answer 2 · answered Nov 14 '18 at 09:20

Seems like the official repos use a .toBeObservable matcher.

Not sure why the RxJS documentation uses expectObservable()

2 Answers2