When I read that, I thought that errorNotIndexable would raise an
Exception different from Error.
But this is not the case and it means that people should write not so good
tests by checking Error
instead of a concrete Exception.
[[[
MyExampleSetTest >> testIllegal
self should: [ empty at: 5 ] raise: Error.
self should: [ empty at: 5 put: #zork ] raise: Error
]]]
We even have a rule that states that we should not catch on Error
at: index
"Primitive. Assumes receiver is indexable. Answer the value of an
indexable element in the receiver. Fail if the argument index is not an
Integer or is out of bounds. Essential. See Object documentation
whatIsAPrimitive. Read the class comment for a discussion about that the
fact
that the index can be a float."
<primitive: 60>
index isInteger ifTrue:
[self class isVariable
ifTrue: [self errorSubscriptBounds: index]
ifFalse: [self errorNotIndexable]].
index isNumber
ifTrue: [^self at: index asInteger]
ifFalse: [self errorNonIntegerIndex]
thoughts comments?
