Java Spring: Mocking Context in Multiple Files

Question

Trying to make mocked Spring Context for unit tests purpose. Our Spring Configuration is pretty big and as for now trying to get this thing using Spring + Springockito Annotations.

Problem that I've stumbled upon is that I'd like to have multiple Java Classes taking care of the Context Creation/Mocking. As for now this looks like this (let's say Class a takes class B and List of ClassCs as constructor arguments):

//declaring context classes below
@ContextConfiguration(loader = SpringockitoAnnotatedContextLoader.class,
      classes = { 
          ClassA.class,
          ClassB.class,
          SubClassCOne.class,
          SubClassCTwo.class,
          ... //list goes on and on with more mocks
      }
)
public class Configurator {
   @Autowired
   ClassA classA;

   @ReplaceWithMock
   ClassB classB;

   @Autowired
   List<ClassC> classesC;

   @Autowired
   SubClassCOne subclassCOne;

   ....

Problem is that List of C subclasses is far bigger than I'd like to have here (not to mention I'm putting whole responsibility on just one class), so I thought of another Class that will take care of creations like this:

ListProvider.java:

//THIS ANNOTATION WON'T BE TAKEN INTO ACCOUNT
@ContextConfiguration(loader = SpringockitoAnnotatedContextLoader.class,
      classes = {
          SubClassCOne.class,
          SubClassCTwo.class,
          ...
      }
)
public class ListProvider {
   @Autowired
   List<ClassC> classesC;

   ...
   public List<ClassC> getClassesC(){
       return classesC;
   }
   ...

Configurator.java:

@ContextConfiguration(loader = SpringockitoAnnotatedContextLoader.class,
      classes = {
          ClassA.class,
          ClassB.class,
          ListProvider.class,
          ...
      }
)
public class Configurator {
   @Autowired
   ClassA classA;

   @ReplaceWithMock
   ClassB classB;

   @Autowired
   ListProvider listProvider

   @Autowired //probably not autowired anymore?
   List<ClassC> classesC;

   ...
   //then somewhere it'll take classesC from listProvider using getter?

But then the problem comes that even though ListProvider will be autowired correctly, it won't make use of @ContextConfiguration classes and it won't find any ClassC subclasses unless I won't provide everything in Configurator.java, which is exactly what I'd like to avoid.

Is there a change to split this Context Configuration up into multiple files?

score 0 · Answer 1 · answered Nov 04 '16 at 09:57

Separate out your config into default and test using profiles:

@Configuration
@ComponentScan(basePackages = "com.greg")
public class MainConfig {
}

@Configuration
@Profile("test")
public class TestConfig {
}

Then run your test with a test profile

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes=MainConfig .class)
@ActiveProfiles("test")
public class ATest {

So the test will pick up MainConfig at all time but will only pick up TestConfig when the profile is set to test. The @Profile can also be used to distinguish which beans are loaded on a scan.

Java Spring: Mocking Context in Multiple Files

1 Answers1