At the moment, when `Exhaustive` is passed into `Arb.Companion.set`, it is not validated if it has `...

# kotest

[tieskedh]

At the moment, when Exhaustive is passed into Arb.Companion.set, it is not validated if it has range.last items.

Is this intended? it currently has correct behaviour

possible changes:
• decrease upperlimit to values.size,
• throw an out of range-exception when possible out of range
• throw the current exception immediately (we know it will fail) and no breaking changes.

[Emil Kantis]

I think last option makes most sense. Simply add a new check here. You could make it clear that gen is an exhaustive with too few values.

[tieskedh]

I was just thinking, maybe the best way to do this using Exhaustive is values.shuffle(random).take(random)
Although this only works if values.size == values.toSet().size .