How do you unit test business applications?

Question

How are people unit testing their business applications? I\'ve seen a lot of examples of unit testing with \"simple to test\" examples. Ex. a calculator. How are people unit tes

Answer 1

It depends on what you're testing. If you're testing a business logic component -- then its immaterial where the data is coming from and you'd probably use a mock or a hand rolled stub class that simulates the data access routine the component would have called in the wild. The only time I mess with the data access is when I'm actually testing the data access components themselves.

Even then I tend to open a DB transaction in the TestFixtureSetUp method (obviously this depends on what unit testing framework you might be using) and rollback the transaction at the end of the test suite TestFixtureTeardown.