A new ShadowLooper to workaround https://github.com/robolectric/robolectric/pull/895 Include it in your unit tests along with a top-level configuration file named: org.robolectric.Config.properties with the following contents: shadows=org.github.gist.hborders.Fixed895ShadowLooper

Fixed895ShadowLooper

package org.github.gist.hborders;

/**
To automatically configure this Shadow for all tests, create a top-level configuration file named: org.robolectric.Config.properties with the following contents:

shadows=org.github.gist.hborders.Fixed895ShadowLooper
 
 */
@SuppressWarnings({"UnusedDeclaration"})
@Implements(Looper.class)
public class Fixed895ShadowLooper extends ShadowLooper {
    private static final Thread MAIN_THREAD = Thread.currentThread();

    public void __constructor__() {
    }

    @Implementation
    public static Looper getMainLooper() {
        ShadowApplication shadowApplication = Robolectric.getShadowApplication();
        if ((shadowApplication == null) && (Thread.currentThread() == MAIN_THREAD)) {
            Looper mainLooper = myLooper();
            return mainLooper;
        } else {
            // might still throw NullPointerException
            // better than returning null because this fails early.
            return shadowApplication.getMainLooper();
        }
    }

}

Awesome! Thanks a lot