When do I use the TestFixtureSetUp attribute instead of a default constructor?

Question

The NUnit documentation doesn\'t tell me when to use a method with a TestFixtureSetup and when to do the setup in the constructor.

public class MyTe         


        

Answer 1

There is difference between constructor and method marked with [TestFixtureSetUp] attribute. According to NUnit documentation:

It is advisable that the constructor not have any side effects, since NUnit may construct the object multiple times in the course of a session.

So if you have any expensive initialization it is better to use TestFixtureSetUp.