I m getting this error while running junit test in android m kotlinlang #coroutines

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Title

s

Saiedmomen

01/12/2019, 12:21 AM

I'm getting this error while running junit test in android module

Exception in thread "main" java.lang.IllegalStateException: Module with the Main dispatcher had failed to initialize. For tests Dispatchers.setMain from kotlinx-coroutines-test module can be used

Does anyone know

Dispatchers.setMain

with what parameter should be called?

a

Allan Wang

01/12/2019, 12:22 AM

Did you import an appropriate dependency to set your main dispatcher?

See https://github.com/Kotlin/kotlinx.coroutines/blob/master/ui/coroutines-guide-ui.md Otherwise you need the test dependency to set your own main dispatcher

s

Saiedmomen

01/12/2019, 12:25 AM

the one mentioned in the message of exception? yes#

I just don't know what to pass into setMain

a

Allan Wang

01/12/2019, 12:27 AM

Are you not using android, swing, or javafx? Do you actually need a main dispatcher?

You can find examples here https://github.com/Kotlin/kotlinx.coroutines/blob/master/core/kotlinx-coroutines-test/README.md

s

Saiedmomen

01/12/2019, 12:28 AM

yes. android. It is working on main source set. It is throwing this in junit test

Thank you but I'm still getting the same exception

a

Allan Wang

01/12/2019, 12:37 AM

Can you post your unit test?

s

Saiedmomen

01/12/2019, 12:46 AM

it is in the channel

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