Issue
I want to inject DeMorgenArticleScraper in a test.
@RunWith(SpringJUnit4ClassRunner.class)
public class DeMorgenArticleScraperTest {
@Autowired
private DeMorgenArticleScraper deMorgenArticleScraper;
...
}
The DeMorgenArticleScraper component has some configuration going on for itself, but the IDE/compiler is not complaining about them.
@Component
public class DeMorgenArticleScraper extends NewsPaperArticleScraper {
@Autowired
public DeMorgenArticleScraper(
@Qualifier("deMorgenSelectorContainer") SelectorContainer selector,
GenericArticleScraper genericArticleScraper,
@Qualifier("deMorgenCompany") Company company) {
super(selector, genericArticleScraper, company);
}
...
}
The constructor parameters that are annotated with @Qualifier, are defined in a Config.class With @Bean. The class itself has @Configuration. I figure the problem is not situated here.
The IDE warns me already, no bean found...autowired members must be defined in a bean. But as far as I know, it is defined in a bean with the @Component annotation. All other bean wiring seems ok as the Spring boot application can start (when I comment out the test class).
Solution
@SpringBootTest
is fairly heavyweight, and for all intents and purpose will load your entire application, https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-testing.html#boot-features-testing-spring-boot-applications, it's fairly heavyweight and dramatically affects test time. Depending on what you are trying to test you may want to look into
- Slice tests e.g.
@JsonTest
,@DataJpaTest
,@WebMvcTest
etc. , https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-testing.html#boot-features-testing-spring-boot-applications-testing-autoconfigured-tests. Benefit of these tests are not only will they not load everything, thus faster, but will try to hunt out the relevant configurations. - Plain old
@ContextConfiguration
and point to the relevant@Configuration
's required to load beans needed for the test https://docs.spring.io/spring/docs/current/spring-framework-reference/testing.html#contextconfiguration
Answered By - Darren Forsythe
Answer Checked By - David Marino (JavaFixing Volunteer)