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(.module:
[library
[lux "*"
["_" test {"+" [Test]}]
[abstract
[monad {"+" [do]}]
["[0]" predicate]
[\\specification
["$[0]" equivalence]
["$[0]" hash]
["$[0]" order]
["$[0]" enum]
["$[0]" codec]]]
[control
["[0]" try ("[1]\[0]" functor)]
["[0]" exception]]
[data
[collection
["[0]" list]
["[0]" set]]]
[math
["[0]" random {"+" [Random]} ("[1]\[0]" monad)]
[number
["n" nat]]]]]
[\\library
["[0]" /]])
(def: .public random
(Random /.Day)
(random.either (random.either (random.either (random\in #/.Sunday)
(random\in #/.Monday))
(random.either (random\in #/.Tuesday)
(random\in #/.Wednesday)))
(random.either (random.either (random\in #/.Thursday)
(random\in #/.Friday))
(random\in #/.Saturday))))
(def: .public test
Test
(<| (_.covering /._)
(_.for [/.Day])
(do random.monad
[expected ..random
invalid (random.only (predicate.or (n.< (/.number #/.Sunday))
(n.> (/.number #/.Saturday)))
random.nat)]
($_ _.and
(_.for [/.equivalence]
($equivalence.spec /.equivalence ..random))
(_.for [/.hash]
($hash.spec /.hash ..random))
(_.for [/.order]
($order.spec /.order ..random))
(_.for [/.enum]
($enum.spec /.enum ..random))
(_.for [/.codec]
($codec.spec /.equivalence /.codec ..random))
(do random.monad
[not_a_day (random.ascii/upper 1)]
(_.cover [/.not_a_day_of_the_week]
(case (\ /.codec decoded not_a_day)
(#try.Failure error)
(exception.match? /.not_a_day_of_the_week error)
(#try.Success _)
false)))
(_.cover [/.number /.by_number]
(|> expected
/.number
/.by_number
(try\each (\ /.equivalence = expected))
(try.else false)))
(_.cover [/.invalid_day]
(case (/.by_number invalid)
(#try.Failure error)
(exception.match? /.invalid_day error)
(#try.Success _)
false))
(_.cover [/.week]
(let [all (list.size /.week)
uniques (set.size (set.of_list /.hash /.week))]
(and (n.= (/.number #/.Saturday)
all)
(n.= all
uniques))))
))))
|
