I am having a weird issue with testing Coroutines converted kotlinlang #coroutines

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Title

a

aaverin

12/04/2018, 10:59 AM

I am having a weird issue with testing Coroutines, converted to RxJava2 with

asSingle(CommonPool)

In a unit-test class, I have 2 different tests. Each one of them uses

test()

method from RxJava2 to assert the value Problem is, every time I run my tests, on of them fails, but only one of them. If I comment away one of the tests – the other one always passes. It feels like some threading issue, anybody had similar problems?

Basically, test that is run second always fails in my scenario

Problem was in

CommonPool

that was hardcoded inside the class and not replaced with

Unconfined

in the unit test

g

gildor

12/04/2018, 11:20 AM

Maybe you could provide some self contained example of this issue

a

aaverin

12/04/2018, 11:22 AM

class ApiCall() {
  fun execute(): Single<Data> {
    async { ... }.asSingle(CommonPool)
  }
}

class ApiCallTest {
   val classToTest = ApiCall()

  @Test
  fun test1() {
   classToTest.execute().test().assertValue(testValue)
  }

  @Test
  fun test2() {
   classToTest.execute().test().assertValue(testValue)
  }
}

Along these lines. Do you need actual running example?

Would be great if Kotlin Playground could support 3rd party libraries, like RxKotlin

4 Views

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