Testing with Spring and Maven: applicationContext

Question

Seems that question old as world, but I still can\'t find out the solution..

I\'m trying to run simple test:

@RunWith(SpringJUnit4ClassRunner.class)
         


        

Answer 1

UPDATED: Actually in my case the problem was in Compile on Save option enabled. I use Netbeans, and the option was set to For test execution only. This value compiles changed files and replaces resources with new files. However, due to usage of application resources additionally to test resources, For test execution only produces incorrectly generated resources in target folder.

Changing Compile on Save=For test execution only

to Compile on Save=Disable fixes the problem.

The text below is also correct, but sometimes does not work. It was working only till I restarted Netbeans IDE. However, the details of the reason of the problem are correct, hence, I prefer to leave the test.

---

OLD: In my situation I have appContext-test.xml in src/main/resources. When I change any code and launch one unit test (not all of them) it recompiles and correctly executed. But if I launch same unit test again it is failed with the java.lang.IllegalStateException: Failed to load ApplicationContext.

I have changed pom.xml from

    
        
            ${project.basedir}/src/main/resources
            true
        
    
    
        
            ${project.basedir}/src/test/java/resources
            true
        
    

to

    
        
            ${project.basedir}/src/main/resources
            true
        
    
    
        
            ${project.basedir}/src/main/resources
            true
        
        
            ${project.basedir}/src/test/java/resources
            true
        
    

and now all work fine.

The error was due to appContext-test.xml uses src/main/resources/my.properties file with a lot of variables like

database.url = ${database.url}
database.username = ${database.username}
database.password = ${database.password}

that are filled during a build. However, if you skip src/main/resources in testResource, then my.properties is added to target/classes/my.properties as is, i.g. without a substitution. This file of course breaks the context.

PS: You can remove ${project.basedir}/ - it is my custom thing.