GetExceptionMessage examples?

[jwvanderbeck]

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Hi, I could not find any examples of using the callback to get the exception message. It would be very helpful to include a few examples of this.

[lukzas]

@jwvanderbeck if you want to test exception message you could try something like

Assert.Throws(Is.TypeOf<InvalidOperationException>()  
          .And.Message.EqualTo("I am the test exception"),  
          () => fixture.TestThatThrowsException());

or

var ex = Assert.Throws<InvalidOperationException>(() => fixture.TestThatThrowsException());  
Assert.AreEqual("I am the test exception", ex.Message);

[SeanKilleen]

@jwvanderbeck I know this issue is a bit old, but please let me know if the example on our Assert.Throws docs is clear enough; if not, feel free to file an issue / PR over there too: https://docs.nunit.org/articles/nunit/writing-tests/assertions/classic-assertions/Assert.Throws.html