Hi, for testing is there anyway to make my unit te...

# coroutines

[julioyg]

Hi, for testing is there anyway to make my unit tests work if I use Dispatchers.Main dispatcher, or do I need to mock that guy? I'm getting java.lang.IllegalStateException: Module with the Main dispatcher had failed to initialize

[julioyg]

ok, I'll answer to myself: https://github.com/Kotlin/kotlinx.coroutines/issues/568

[louiscad]

Hi @julioyg, you need to provide an implementation.
I made an example in this PR: https://github.com/Kotlin/kotlinx.coroutines/pull/760/files

Look for the build.gradle file, TesMainDispatcher, the test/resources/META-INF/services/kotlinx.coroutines.internal.MainDispatcherFactory file and the LifecycleTest file using it.

[julioyg]

hey @louiscad I see the TestDispatcher, but I fail to see how to use it, and where to tell your tests to use it

[louiscad]

It's automatically added via ServiceLoader with the resource in META-INF

[louiscad]

@julioyg You then just have to use Dispatchers.Main

[julioyg]

ok... so I just copy that file under the same directory? sorry if it's a stupid question..

[julioyg]

oh, it's working, thanks

[louiscad]

It works because it's integrated into the resources sourceSets from build.gradle, or is in a default resources directory