How to do exception handling with nunit and moq?

Question

Hi

I am trying to use nunits new way of exception handling but I am finding it hard to find information on it and how to also use it with moq.

I have right now moq that throws a exception on a mocked method but I don't know how to use nunit to catch it and look at it.

Answer 1

Why can't you enclose the mocked method call in a try/catch block and catch the specific exception being thrown?

Answer 2

There's a few different ways to do it; I use Assert.Throws.

var exception = Assert.Throws<YourTypeOfException>(()=> Action goes here);

E.g.

var exception = Assert.Throws<ArgumentNullException>(()=> new ChimpPuncher(null));

You can then query the exception object further if you want. E.g.

Assert.That(exception.Message, Text.Contains("paramname");