public void ConfigItemsAreRequired()
 {
     ThrownException.ShouldNotBeNull();
     ThrownException.ShouldBeAssignableTo <InvalidOperationException>();
 }
 public void ExceptionThrown()
 {
     ThrownException.ShouldNotBeNull();
 }
 public void DuplicateRegionsAreRejectedWithException()
 {
     ThrownException.ShouldNotBeNull();
     ThrownException.ShouldBeAssignableTo <InvalidOperationException>();
 }