what is your way of having a clean assertion of Rx...

# atrium

[ghedeon]

what is your way of having a clean assertion of RxJava values? Do you use built-in assertions of TestObserver? Or something with atrium, like:

fun posts(): Single<Foo>...
...
test:

val answer = foo().test().values().first()

//assert answer with atrium

this .test().values().first() looks a bit verbose, do you wrap it into an extension function? Just curious what's the best practice here

[robstoll]

I am not using RxJava and hoped someone else would fill in. I am not too familiar with it. As I understand `foo()`makes the call which you want to test, test() is used to observe the value and values().first() is used to retrieve the value as such. I would probably create an assertion function for SingleSource<T> which wraps test().values() and retrieves first but also checks that values() hasSize(1) (assuming it is somehow possible to emit two values even though it is defined as Single<T>. I hope that helps

[robstoll]

Please let me know if you want to create an assertion function and need help

[ghedeon]

Probably will do as you described, just decided to double check, what others are doing, must be a common pattern in RxJava world. Thanks for providing such a great support!

[robstoll]

With pleasure and don't forget to Star Atrium on GitHub if you haven't done already