Spring Integration Testing: Could not detect default resource locations

Question

I am running integration tests for my Spring Boot application with Maven's Failsafe plugin. When I create a simple test such as this one:

@RunWith (SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(App.class)
public class MyTestIT {

    @Test
    public void test() {
        assertTrue (true);
    }
}

And then run mvn verify I see the following log entries just before the Spring application starts (e.g. even before the Spring Boot banner):

Running org.....MyTestIT
2016-04-14 13:25:01.166  INFO ???? --- [           main] 
    or.sp.te.co.su.AbstractContextLoader               : 
    Could not detect default resource locations for test class 
    [org....MyTestIT]: no resource found for suffixes
    {-context.xml, Context.groovy}.
2016-04-14 13:25:01.175  INFO ???? --- [           main] 
    or.sp.te.co.su.DefaultTestContextBootstrapper      : 
    Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
2016-04-14 13:25:01.185  INFO ???? --- [           main] 
    or.sp.te.co.su.DefaultTestContextBootstrapper      : Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListener@57c758ac, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@a9cd3b1, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@13e39c73, org.springframework.test.context.support.DirtiesContextTestExecutionListener@64cd705f, org.springframework.test.context.transaction.TransactionalTestExecutionListener@9225652, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@654f0d9c]

Followed by the Spring Boot banner. The tests then run through without any error. While these messages are printed with an INFO log level and the tests run fine, I guess everything is fine, but I still find these messages irritating. So is there something wrong with my configuration? Should I worry about these messages?

Even if there was nothing wrong, I would still like to understand whats happending there and what the messages mean.

My maven-failsafe-plugin is just using the default configuration and my App.java is just a simple class annotated with @SpringBootApplication.

UPDATE 1:

Here is the configuration of my test plugins:

  <plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <configuration>
      <!-- Ignore any tests that are marked by the @IntegrationTest annotation of Spring Boot -->
      <excludedGroups>org.springframework.boot.test.IntegrationTest</excludedGroups>
    </configuration>
  </plugin>

  <plugin>
    <artifactId>maven-failsafe-plugin</artifactId>
    <version>2.19.1</version>
    <executions>
      <execution>
        <id>integration-test</id>
        <goals>
          <goal>integration-test</goal>
        </goals>
      </execution>
    </executions>
  </plugin>

I also have a spring-boot-starter-test dependency configured and I am using spring-boot-devtools. Besides that everything else is not test related.

The project it self is pretty standard, using hibernate and mysql and web-mvc for rest endpoints. I have two configuration classes for spring security on the class pass.

In the main/resources folder I have an application.properties file and a log4j2.xml. There is no test/resources folder, but when I just copy the main/resources folder to test/resources the above log messages still appear.

UPDATE 2: I just created a small sample application trying to recreate the issue, and it seems the mentioned log-output starts to appear as soon as I put a log4j2.xml file into a resources folder. I tried putting it in src/main or src/test or both with identical effects.

Answer 1

This is the default behaviour when running Spring integration tests.

From the reference documentation

If you omit both the locations and value attributes from the @ContextConfiguration annotation, the TestContext framework will attempt to detect a default XML resource location. Specifically, GenericXmlContextLoader and GenericXmlWebContextLoader detect a default location based on the name of the test class. If your class is named com.example.MyTest, GenericXmlContextLoader loads your application context from "classpath:com/example/MyTest-context.xml".

So, it's not related whatsoever to Maven, log4j or the positioning/assistance of resource folder.

Should I worry about these messages?

Not at all, apparently.

but I still find these messages irritating

Don't know if and how to turn off that check (Course you can eliminate it by changing the log level of AbstractContextLoader to WARN).

Answer 2

You can use AnnotationConfigContextLoader in combination with @Configuration.

See here for more details.