Kotlin coroutines unit testing using mockito

Question

i am getting the below when i try to mock and verify on an activity that's calling a suspend function

Error:

Argument(s) are different! Wanted: userManager.getAccountInfo( (onCreate_callsGetAccountInformation$1) kotlinx.coroutines.experimental.CoroutineScope.() -> kotlin.Unit ); -> at com.pharmacy.AccountActivityTests$onCreate_callsGetAccountInformation$1.doResume(AccountActivityTests.kt:117) Actual invocation has different arguments: userManager.getAccountInfo( () kotlinx.coroutines.experimental.CoroutineScope.() -> kotlin.Unit ) -> at com.pharmacy.AccountActivity$loadAccountInfoAsync$1$1.doResume(AccountActivity.kt:199)

Code:

I have my unit test case decorated with runBlocking like this:

    @Test 
    fun onCreate_callsGetAccountInformation() = runBlocking<Unit> 
    { whenever(userManager.getAccountInfo()).thenReturn(AccountInformation()) 
      subject = Robolectric.setupActivity(AccountActivity::class.java) 
      verify(userManager).getAccountInfo() 
    }

here -> usermanager.getAccountInfo() is a suspend function.

Faraaz · Accepted Answer · 2017-11-29 21:04:48Z

1

It was the mockito version, 2.10 and below does not support suspend functions. bumping it to latest(2.12) fixed it.

answered Nov 29, 2017 at 21:04

Faraaz

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