I am pretty new to NUnit (and automated testing in general). I have recently done some Ruby On Rails work and noticed that in my test suite, when I create objects (such as a new user) and commit them during course of the suite, they are never committed to the database so that I can run the test over and over and not worry about that user already existing.
I am now trying to accomplish the same thing in NUnit, but I am not quite sure how to go about doing it. Do I create a transaction in the Setup and Teardown blocks? Thanks.
Why would you talk to the database during unit-tests? This makes your unit-test to integration-tests by default. Instead, create wrappers for all database communication, and stub/mock it during unit-tests. Then you don’t have to worry about database state before and after.
Now, if you are not willing to that level of refactoring: The problem with transactions is that you need an open connection. So, if your method targeted for testing handles all communication on its own, it is really difficult to inject a transaction that you can create at setup and roll back at teardown.