NullPointer Exception when using Espresso

Question

I\'m trying to use Espresso. But I got this error and I have no if I\'m missing some codes.

any thoughts will be highly appreciated.

error log:

Answer 1

Your value of instrumentation->android:name should be "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner" not "android.test.InstrumentationTestRunner".

And then be sure to select it when configuring your junit test:

I posted a quick setup tut on my blog if you need more guidance.