Question

I’m writing tests for a business method that invokes some DAO classes to perform operations over a database.

This method, firstly retrieves a JDBC connection from a DataSource object, The same connection is passed to all DAO instances, so I can use it to control the transaction. So, if everything works properly, I must invoke commit() over the connection object.

I would like to test if the commit() is invoked, so I’ve thought to create an expectation (I’m using JMock) that checks that. But since the Connection class isn’t a direct neighbour from my Business class, I don’t know how to do this.

Someone knows how to overcome this? There is some JMock facility for this, or some alternative design that allows to overcome this?

Thanks

Answer 1

You need to mock DataSource and Connection so that your mock DataSource returns your mock Connection. And yes, this kind of thing ends up becoming a real pain…