@Test public void getProductName() throws Exception { // given List<Product> products = new ArrayList<Product>(); Product prod = new Product(); prod.setKey(1000L); products.add(prod); givenProductName(); // when Map<Long, String> result = logCollector.getProductName(dsMock, products); // then assertEquals(1, result.size()); assertEquals(PRODUCTNAME, result.get(Long.valueOf(1000L))); }