Spring: unit and integration tests

Question

I\'m looking for best practices for setting up unit and integration tests using Spring.

I usually use 3 kind of tests:

• \"real\" unit tests (no dependen

Answer 1

I'd go with this version:

ContextConfiguration(locations = { "/my_spring_test.xml" })
public abstract class AbstractMyTestCase extends AbstractJUnit4SpringContextTests

and in my_spring_test.xml, I'd use the PropertyPlaceHolderConfigurer mechanism.

Example for JPA:

Now all you need to do is have different versions of test.properties on the class path for in-memory and real integration tests (and of course the respective driver classes need to be present). You can even set system properties to overwrite the property values.

---

If you want to prepare this with maven, you will find that copying files with maven is not trivial. You will need a way to execute code, the standard choices being the maven-antrun-plugin and gmaven-maven-plugin.

Either way: have two configuration files, e.g. in src/main/config and add two plugin executions, one in phase generate-test-resources and one in phase pre-integration-test. Here's the GMaven version:

    org.codehaus.gmaven
    gmaven-plugin
    1.3
    
        
            pre-integration-test
            
                execute
            
            
            
            new File(
               pom.build.testOutputDirectory,
               "test.properties"
            ).text = new File(
                       pom.basedir,
                       "src/main/config/int-test.properties"
            ).text;
            
            
        
        
            generate-test-resources
            
                execute
            
            
            
            new File(
               pom.build.testOutputDirectory,
               "test.properties"
            ).text = new File(
                       pom.basedir,
                       "src/main/config/memory-test.properties"
            ).text;