@Test
public void testHandleEventAddItems() {

    testSubject.on(new ItemsAddedToPortfolioEvent(portfolioId, itemId, 100));
    verify(portfolioViewRepository).save(argThat(new PortfolioEntryMatcher(
            itemId.getIdentifier(), 1, 2 * DEFAULT_AMOUNT_ITEMS, 1, DEFAULT_AMOUNT_ITEMS
    )));
}