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|
(.module:
[library
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[data
["." maybe]
[collection
["." list]]]
[math
["." random]
[number
["n" nat]]]]]
[\\library
["." / (#+ Functor)]])
(def: #export test
Test
(do random.monad
[left random.nat
right random.nat
shift random.nat]
(<| (_.covering /._)
($_ _.and
(_.cover [/.Or /.sum]
(and (case (\ (/.sum maybe.functor list.functor) map
(n.+ shift)
(#.Left (#.Some left)))
(#.Left (#.Some actual))
(n.= (n.+ shift left) actual)
_
false)
(case (\ (/.sum maybe.functor list.functor) map
(n.+ shift)
(#.Right (list right)))
(^ (#.Right (list actual)))
(n.= (n.+ shift right) actual)
_
false)))
(_.cover [/.And /.product]
(case (\ (/.product maybe.functor list.functor) map
(n.+ shift)
[(#.Some left) (list right)])
(^ [(#.Some actualL) (list actualR)])
(and (n.= (n.+ shift left) actualL)
(n.= (n.+ shift right) actualR))
_
false))
(_.cover [/.Then /.compose]
(case (\ (/.compose maybe.functor list.functor) map
(n.+ shift)
(#.Some (list left)))
(^ (#.Some (list actual)))
(n.= (n.+ shift left) actual)
_
false))
))))
|
