What is the difference between TestInitialize
vs ClassInitialize
in MSTest? What are the pros cons of each?
I'm under the impression that TestInitialze
should run with EACH test, every time? Is that correct? And that ClassInitialize
will run every time a new instance of any class?
Both attributes are available only for the classes (and hence tests) where they belong.
TestInitialize
runs before every test that is declared on the the same class where the attribute is declared.
ClassInitialize
runs only on the initialization of the class where the attribute is declared. In other words it won't run for every class. Just for the class that contains the ClassInitialize
method.
If you want a method that will run once before all tests or classes' initialization use the AssemblyInitialize
.