Problem with @ParcelClass annotations and related classes about parceler HOT 2 CLOSED

@RunWith(RobolectricTestRunner.class)
@Config(manifest=Config.NONE)
public class ABTest {

    @ParcelClasses({
            @ParcelClass(A.class),
            @ParcelClass(B.class)
    })
    public static class A {}
    public static class B {
        List<A> a;
    }

    @Test
    public void testList(){
        B b = new B();
        A a = new A();
        b.a = Collections.singletonList(a);

        B output = Parcels.unwrap(new ABTest$B$$Parcelable(b));
        assertEquals(1, output.a.size());
    }
}