Jasmine tests always failing in RxJS 7 when using toBeObservable()

jasmine rxjs karma-jasmine jasmine-marbles

I think the new documentation shows the new expectObservable:

expectObservable(new BehaviorSubject(true).asObservable()).toBe(expected);

Check out the documentation here: https://github.com/ReactiveX/rxjs/blob/master/docs_app/content/guide/testing/marble-testing.md#marble-syntax

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