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(.module:
[lux #*
["%" data/text/format (#+ format)]
["_" test (#+ Test)]
[abstract
[monad (#+ do)]
{[0 #test]
[/
["$." equivalence]
["$." monoid]
["$." fold]
["$." functor (#+ Injection)]
["$." apply]
["$." monad]]}]
[data
["." maybe]
[number
["." nat]]
[collection
["." list ("#@." fold)]]]
[math
["r" random]]]
{1
["." / ("#@." monad)]})
(def: #export test
Test
(<| (_.context (%.name (name-of /._)))
(do r.monad
[size (|> r.nat (:: @ map (|>> (n/% 100) (n/max 10))))]
($_ _.and
($equivalence.spec (/.equivalence nat.equivalence) (r.row size r.nat))
($monoid.spec (/.equivalence nat.equivalence) /.monoid (r.row size r.nat))
($fold.spec /@wrap /.equivalence /.fold)
($functor.spec /@wrap /.equivalence /.functor)
($apply.spec /@wrap /.equivalence /.apply)
($monad.spec /@wrap /.equivalence /.monad)
(do @
[idx (|> r.nat (:: @ map (n/% size)))
sample (r.row size r.nat)
other-sample (r.row size r.nat)
non-member (|> r.nat (r.filter (|>> (/.member? nat.equivalence sample) not)))
#let [(^open "/@.") (/.equivalence nat.equivalence)]]
($_ _.and
(_.test (format (%.name (name-of /.size))
" " (%.name (name-of /.empty?)))
(if (/.empty? sample)
(and (n/= 0 size)
(n/= 0 (/.size sample)))
(n/= size (/.size sample))))
(_.test (format (%.name (name-of /.add))
" " (%.name (name-of /.pop)))
(and (n/= (inc size) (/.size (/.add non-member sample)))
(n/= (dec size) (/.size (/.pop sample)))))
(_.test (format (%.name (name-of /.put))
" " (%.name (name-of /.nth)))
(|> sample
(/.put idx non-member)
(/.nth idx)
maybe.assume
(is? non-member)))
(_.test (%.name (name-of /.update))
(|> sample
(/.put idx non-member) (/.update idx inc)
(/.nth idx) maybe.assume
(n/= (inc non-member))))
(_.test (format (%.name (name-of /.to-list))
" " (%.name (name-of /.from-list)))
(|> sample /.to-list /.from-list (/@= sample)))
(_.test (%.name (name-of /.member?))
(and (not (/.member? nat.equivalence sample non-member))
(/.member? nat.equivalence (/.add non-member sample) non-member)))
(_.test (%.name (name-of /.reverse))
(and (not (/@= sample
(/.reverse sample)))
(/@= sample
(/.reverse (/.reverse sample)))))
))
))))
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