What is "IdlingResourceTimeoutException" in Espresso?

Issue

I recently using espresso to do test with my android app. But sometimes the test case passed, sometimes not. It is a very long async task takes about 30 second to finish it. When it failed, it throws me this exception:

IdlingResourceTimeoutException

So does anyone know why this happens and what is the meaning of this exception?

Solution

That must be that the asynctask takes too much time to execute.

Try changing this idling timeout using:

IdlingPolicies.setMasterPolicyTimeout(3, TimeUnit.MINUTES);
IdlingPolicies.setIdlingResourceTimeout(3, TimeUnit.MINUTES);

Answered By - jeprubio