Question

I am working on a Spring application (Spring 3.0) and following layered architecture i.e. Controller -> Service -> DAO layers.

I want to write unit test cases for service and DAO layer using Junit.
I checked Spring official site and also tried many other sites but couldn’t figure out an easy and simple way of doing it.

Can anybody provide me some helpful resources ?

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EDIT :
Looks like Mockito is the good option. Any good link to use it in Spring.

Thank you Alex for suggesting it.

• Mocking Hibernate DAO

Answer 1

In terms of resources the Spring documentation on testing is very good. This can be found here.

When you test your service layer you will want to use a mocking library such as Mockito to mock your DAOs and therefore your domain layer. This ensures that they are true unit tests.

Then to integration test your DAOs against a database you can use the Spring transactional test utilities described in that reference documentation.