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(.module:
[library
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[data
[collection
["." list]]]
[math
["." random]
[number
["n" nat]]]]]
[\\library
["." / (#+ Fold)]])
(def: #export test
Test
(do random.monad
[samples (random.list 10 random.nat)]
(<| (_.covering /._)
($_ _.and
(_.cover [/.with_monoid]
(n.= (\ list.fold fold (\ n.addition compose) (\ n.addition identity) samples)
(/.with_monoid n.addition list.fold samples)))
))))
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