more sophisticated builder pattern use case

gistfile1.txt

Contact testContact = new ContactBuilder()
                          .withFirstName('JP')
                          .withLastName('Coolio')
                          .withAccount(new AccountBuilder().withRecordType('Coder'))
                          .build();

Scenario: we want a contact record with the Name 'JP Coolio'. But we need an account to create a contact record. Usually what do we do? We create two methods in the TestDataFactory class, try to name them in a way that someone else can potentially find the methods again and we call both of the methods wherever we are creating the test data.

With the builder pattern, yes we have to build the infrastructure and when we do have it: voila, we can specify the creation of the account inside the contact as we really don't care about it that much anyway. It's neat. I think. :)