CODEWITHSUNDEEP
javaspringspring-bootjmx
mmoehring
mmoehring

Reputation: 95

Spring Boot Test does not use jmx property

I have a test clas with

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE)
public class Foo{
    ...
}

which should start up a regular application context as defined by:

@SpringBootApplication(scanBasePackages = {"de.foo", "de.bar"})
public class Application {
    ...
}

This works as expected. Further I have an application.yml which gets loaded in both cases but when running the test, the property for JMX (spring.jmx.enabled) does not get loaded or it does not get used.

I tried different property files (application.yml, application-test.yml) but the only thing what works is setting the property via

@TestPropertySource(properties = "spring.jmx.enabled:true")

The property defaults to true in a regular application context.

Several questions:

  1. Why is the default different in a test class?
  2. Why does the property not get loaded or recognized, when loading it from an application.yml (the rest of the yml works, so it does get loaded).

This seems to be a known behavior, as seen in this comment in Spring Boot Sample Data Tests. Is there any documentation I missed about this behavior?

Upvotes: 2

Views: 1506

Answers (1)

Vedran Pavic
Vedran Pavic

Reputation: 2389

I've recently encountered the same situation myself, and have opened spring-projects/spring-boot#13008 to document this behavior. As a result, the following additions to the reference manual will be added in the upcoming 1.5.13.RELEASE and 2.0.2.RELEASE:

As the test context framework caches context, JMX is disabled by default to prevent identical components to register on the same domain. If such test needs access to an MBeanServer, consider marking it dirty as well:

@RunWith(SpringRunner.class)
@SpringBootTest(properties = "spring.jmx.enabled=true")
@DirtiesContext
public class SampleJmxTests {

    @Autowired
    private MBeanServer mBeanServer;

    @Test
    public void exampleTest() {
        // ...
    }

}

Upvotes: 5

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