Questions tagged [marble-diagram]
5 questions
9
votes
1 answer
How to read the RxJs mergeMap marble diagram
In this marble diagram for mergeMap, how do you read this expression?
// Kind of, looks like an em-dash near the end
mergeMap(i => 10*i--10*i--10*i--|)
Ed I
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5
votes
1 answer
Karma / jasmine-marbles: test failure message not properly formatted
I have added jasmine-marbles to my project and I am getting error messages like this:
Expected $[0].frame = 20 to equal 70.
Expected $[0].notification.kind = 'E' to equal 'N'.
Expected $[0].notification.value = undefined to equal…
Felix
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2
votes
0 answers
Combine RxJS marble diagrams
I'm testing an observable that might be described with following diagram:
-a(bcdef) // emit one value at first frame and 5 values in second frame
--g // emit one value at third frame
But I cannot describe this observable in single diagram,…
Valentine
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0
votes
1 answer
ngrx - marble testing and withLatestFrom
I'm using Angular 8 and ngrx 8. I'm trying to write unit tests for an effect that uses withLatestFrom to get some values from the state. I'm using rxjs/testing/TestScheduler for this. In there, I have a marble diagram like this:
actions$ = hot('aa',…
kaveh
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0
votes
2 answers
Should we avoid nested rxjs operators? One case which I cannot test
I have written the following effect in my Angular app which uses rxjs. On MyActions.myAction, I receive an object containing a property ids - an array of ids - and for each id I want to send an HTTP request via this.myApiService.getResource, which…
Jacopo Lanzoni
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