[Newbies] test for exception

[John Almberg]

Lots of digging later...

Okay! I think I found the ExceptionEvent I need. It's the  
appropriately named 'AssertionFailure'.

For anyone who might be interested at some future date, the following  
test works:

	self should: [ anObject aSetter: anInvalidNumber] raise:  
AssertionFailure.
	
Cool!

-- John


On Aug 14, 2007, at 4:02 PM, John Almberg wrote:

> I have a setter method that tests input for validity using  
> 'assert'. It looks like this:
>
> aVariableName: aNumber
> 	self assert: [(aNumber >= self minValue) & (aNumber <= self  
> maxValue)]
> 		description: 'invalid value'.
> 	aVariableName := aNumber.
>
> The program needs to blow up if an invalid number is assigned. I  
> don't want to just quietly ignore the invalid assignment. That's  
> why I have this assertion.
>
> Anyway, the assertion blows up just fine, but now I'd like to write  
> a test that checks to see what happens if I try to assign an  
> invalid number.
>
> I *think* I should use something like:
>
> 	self should: [anObject aVariableName = anInvalidNumber] raise: ???
>
> raise: is supposed to get the ExceptionEvent, but I'm not sure how  
> to find out which event this would be. The debugger doesn't seem to  
> show this when the assertion fails.
>
> How do I know which exception event is raised? Or am I on the wrong  
> track completely?
>
> Thanks: John
>
> 	
>
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