public void ShouldHaveValidMessageForExceptionWhenNameIsNull()
{
var obj = new ClassWithExceptions();
ArgumentNullException ex = Assert.Throws <ArgumentNullException>(() => obj.SayHello(null));
Assert.AreEqual("Name cannot be null", ex.Message);
//OR
Assert.That(ex.Message, Is.EqualTo("Name cannot be null"));
//OR above three lines could be replaced with:
Assert.Throws(Is.TypeOf <ArgumentNullException>().And.Message.EqualTo("Name cannot be null"), () => obj.SayHello(null));
}
public void ThrowsExceptionWhenNameIsNull()
{
var obj = new ClassWithExceptions();
Assert.Throws <ArgumentNullException>(() => obj.SayHello(null));
}