Unable to find a @SpringBootConfiguration

Question

I want to create a JUnit test for this private method:

@Component
public class ReportingProcessor {

    @EventListener
    private void collectEnvironmentData(ContextRefreshedEvent event) {
    }
}

I tried this:

@ContextConfiguration
@SpringBootTest
public class ReportingTest {

    @Autowired
    ReportingProcessor reportingProcessor;

    @Test
    public void reportingTest() throws Exception {

        ContextRefreshedEvent contextRefreshedEvent = PowerMockito.mock(ContextRefreshedEvent.class);
        Whitebox.invokeMethod(reportingProcessor, "collectEnvironmentData", contextRefreshedEvent);

    }
}

When I run the code I get:

java.lang.IllegalStateException: Unable to find a @SpringBootConfiguration, you need to use @ContextConfiguration or @SpringBootTest(classes=...) with your test

Do you know ho I can fix this issue?

Do you have a class annotated with `SpringBootApplication` or `SpringBootConfiguration`? — Gustavo Passini, Oct 16 '19 at 23:36
YOur test won't work. If it would the processor would already be invoked. Do you want to test the class/logic or the fact that it is triggered upon starting your application. That isn't clear from your question... — M. Deinum, Oct 17 '19 at 05:44

score 2 · Accepted Answer · edited Sep 30 '22 at 09:34

2

If you don't have any class annotated with @SpringBootApplication and the known main() method, you need to target your component class on the @SpringBootTest annotation.

Usually I do this when I'm building libraries and for some specific scenario I need to have the spring context to unit test them.

Just add this to your code:

@RunWith(SpringRunner.class)
@SpringBootTest(classes = ReportingProcessor.class)
public class ReportingTest {
...

Just did it and the test is running.

Edit: Don't know what are you trying to test exactly, just wanted to show how can you fix the error you are getting.

edited Sep 30 '22 at 09:34

Apostolos

10,033
5
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answered Oct 17 '19 at 21:42

Nel

124
6

I get this error https://stackoverflow.com/questions/58441701/illegal-reflective-access-by-org-powermock-reflect-internal-whiteboximpl-to-meth – Peter Penzov Oct 17 '19 at 22:53
Replied! Hope it helps! – Nel Oct 18 '19 at 00:14

score 0 · Answer 2 · answered Oct 16 '19 at 23:27

0

You should use the @RunWith with your @SpringBootTest:

@RunWith(SpringRunner.class)
@SpringBootTest
public class ReportingTest {

    @Autowired
    ReportingProcessor reportingProcessor;

    @Test
    public void reportingTest() throws Exception {

        ContextRefreshedEvent contextRefreshedEvent = PowerMockito.mock(ContextRefreshedEvent.class);
        Whitebox.invokeMethod(reportingProcessor, "collectEnvironmentData", contextRefreshedEvent);

    }
}

answered Oct 16 '19 at 23:27

Villat

1,455
1
16
33

I get again `ReportingTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration` – Peter Penzov Oct 17 '19 at 16:19

score 0 · Answer 3 · answered Jul 24 '23 at 06:21

For future lost souls: in my case reason of this exception was that I created Junit test without package specified.

Your test must be in subpackage of your main spring class (one annotated with @SpringBootApplication). So if you have com.example.Application then your test must be in some sub package, for example com.example.subpackage.

Unable to find a @SpringBootConfiguration

3 Answers3