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This exception has no message.
java.lang.NullPointerException: 	at org.robolectric.internal.ShadowExtractor.extract(ShadowExtractor.java:5)	at org.robolectric.Shadows.shadowOf(Shadows.java:1190)	at org.robolectric.shadows.CoreShadowsAdapter.getMainLooper(CoreShadowsAdapter.java:37)	at org.robolectric.util.ComponentController.(ComponentController.java:31)	at org.robolectric.util.ComponentController.(ComponentController.java:23)	at org.robolectric.util.ActivityController.(ActivityController.java:40)	at org.robolectric.util.ActivityController.of(ActivityController.java:32)	at org.robolectric.Robolectric.buildActivity(Robolectric.java:82)	at org.robolectric.Robolectric.buildActivity(Robolectric.java:78)	at org.robolectric.Robolectric.setupActivity(Robolectric.java:86)	at uk.co.placona.tradesafe.view.EditActivityTest.ActivityShouldNotBeNull(EditActivityTest.java:54)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)