Test automation
The DGS framework provides classes and utilities that facilitate the automation of GraphQL API tests.
Create a new file called ProductDatafetcherTest.java inside the datafetchers package in the test directory and add the following code:
@SpringBootTest(classes = { DgsAutoConfiguration.class, ProductDatafetcher.class,BigDecimalScalar.class })
public class ProductDatafetcherTest {
  private final InMemRepository repo = new InMemRepository();
  private final int TEN = 10;
  @Autowired
  private DgsQueryExecutor dgsQueryExecutor;
  @MockBean
  private ProductService productService;
  @MockBean
  private TagService tagService;
  // continue …
Here, you are using the @SpringBootTest...
