Attempt to mockito mock any class generates ExceptionInInitializerError

Question

When I run the following code:

public class ActivityTest extends ActivityInstrumentationTestCase2 {
    ....
    public void testCanCreat         


        

Answer 1

I was getting this because I was using proguard for my debug builds because of the 65K method limit (Yes, I need to cut down on the number of dependencies), and that was causing this error for me.

I added this in my (debug) proguard config to solve it:

### Keep Mockito
-keep class org.mockito.** { *; }
-keep interface org.mockito.** { *; }
-keep class com.google.dexmaker.** { *; }
-keep interface com.google.dexmaker.** { *; }

Not sure If I really need all four of those lines, but this did the trick.