### Question:
VPRendererAdapter extends PagerAdapter { public boolean add(T element) { return collection.add(element); } VPRendererAdapter(RendererBuilder<T> rendererBuilder);  VPRendererAdapter(RendererBuilder<T> rendererBuilder, AdapteeCollection<T> collection); @Override Object instantiateItem(ViewGroup parent, int position); @Override void destroyItem(ViewGroup container, int position, Object object); @Override boolean isViewFromObject(View view, Object o); @Override int getCount(); T getItem(int position); boolean add(T element); boolean remove(Object element); void addAll(Collection<? extends T> elements); boolean removeAll(Collection<?> elements); void clear(); void setCollection(AdapteeCollection<T> collection);  }### Answer:
@Test public void shouldAddElementToAdapteeCollection() { adapter.add(ANY_OBJECT); verify(mockedCollection).add(ANY_OBJECT); }