CODEWITHSUNDEEP
javaspringspring-boottesting
Corporativo
Corporativo

Reputation: 185

In a Spring boot test, how can I create a bean and injects by @Autowired?

When I test my Spring boot service I don't know how I can inject an @Autowired bean.

My bean (Spring fills @Value from application.yml):

@Component
public class NavigatorProperties {
    @Value("${timerDelay}")
    private String timerDelay;

    public String getTimerDelay() {
        return timerDelay;
    }
    public void setTimerDelay(String timerDelay) {
        this.timerDelay = timerDelay;
    }
}

My api:

public class ListenerApi implements IRestListenerApi {
    @Autowired
    private NavigatorProperties np;

    public String doSomething (...) { // This is my service method.
        // Here np.getTimerDelay() will return application.yml value.
        int timerDelay = Integer.decode(np.getTimerDelay());
        ...
    }
}

This works fine and int value is correct. Here is my test:

@RunWith(SpringRunner.class)
@SpringBootTest(classes = {ListenerApiTest.class, NavigatorProperties.class})
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class ListenerApiTest {
    @Autowired
    private NavigatorProperties np; // Can be autowired or a new Object.

    // Object to test.
    private ListenerApi listenerApi;

    @Test
    public void test01ForceNumberFormatException() {
        np.setTimerDelay("NumberFormatException");
        // Inyect into ListenerApi
    }

    @Test
    public void test02ForceNullPointerException() {
        np.setTimerDelay(null);
        // Inyect into ListenerApi
    }

In this test comments, how I can inyect into ListenerApi by @Autowired?

Thanks.

Upvotes: 0

Views: 1306

Answers (3)

Hb.Song
Hb.Song

Reputation: 1

your @SpringBootTest should be like: 

@SpringBootTest(classes = {ListenerApi.class, NavigatorProperties.class})

include every bean class that you want to inject into ListenerApiTest

Upvotes: 0

Ramanathan Ganesan
Ramanathan Ganesan

Reputation: 582

Add component scan annotation with the package to scan

@ComponentScan(basePackages = "my.package.to.scan")

Upvotes: 0

Mehraj Malik
Mehraj Malik

Reputation: 15854

First of all, you need to annotate your dependency with org.springframework.stereotype.Component. 

@Component
public class ListenerApi implements IRestListenerApi {

Then Inject it in wherever required :

@Autowired
private ListenerApi listenerApi;

Upvotes: 3

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