I was basing my comment on this: > 20 short functions definitely sound as though they should be explicit. And you are right that it's pretty arbitrary when/if

I was basing my comment on this: > 20 short functions definitely sound as though they should be explicit. And you are right that it's pretty arbitrary when/if a lambda should specifically be tested or not. But the number of lambdas in a project isn't really a good factor to make that decision - it's individual for each function that contains a lambda.