Unable to inject(autowire) a service when test elasticsearch with testcontainers-CodePudding

So, I want to test elasticsearch with testcontainers. Test containers work well and start good, but when I want to invoke a method from my service this is null, because is not injected, and I don't why.

@Testcontainers
@SpringBootTest
@ActiveProfiles("dev")
public class ArticleServiceTestDemo {

    @Autowired
    private ArticleService articleService;

    private static final String ELASTICSEARCH_VERSION = "7.9.2";

    private static final DockerImageName ELASTICSEARCH_IMAGE = DockerImageName
            .parse("docker.elastic.co/elasticsearch/elasticsearch")
            .withTag(ELASTICSEARCH_VERSION);

    @Test
    public void myTest() {
        try (
                ElasticsearchContainer container = new ElasticsearchContainer(ELASTICSEARCH_IMAGE);
        ) {
            container.start();
            ResponseEntity<Article> article = articleService.persistArticle(new ArticleRequestDto());
            assertTrue(article.getStatusCode().is2xxSuccessful());
        }
    }
}

This is my error:

    java.lang.NullPointerException: Cannot invoke "com.ArticleService.persistArticle(com.ArticleRequestDto)" because "this.articleService" is null

When I run a simpe SpringBootTest (without elasticsearch connection and testcontainers) the ArticleService was injected good. But in test with testcontainers this not injected.

CodePudding user response：

Please check ArticleService class is spring bean or not, means ArticleService class was annoted @Service or @Component annotaion or not. When you apply @Component on a class, then Spring bean container initialize as bean object in Spring Bean Container and Spring Container is trying to inject initialized bean object to annoted @Autowired field. And if you apply @Component on class NullPointerException occurs.

CodePudding user response：

For example this test runs good. And ArticleService was injected.

@SpringBootTest
public class DemoTest {

    @Autowired
    private ArticleService articleService;

    @Test
    public void simpleTest() {
        articleService.persistArticle(new ArticleRequestDto());
    }
}