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|
(.module:
[library
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[data
["." text ("#\." equivalence)
["%" format (#+ format)]]]
[math
["." random (#+ Random)]
[number
["n" nat]]]]]
[\\library
["." /]])
(def: part
(Random Text)
(do {! random.monad}
[size (\ ! each (|>> (n.% 10) ++) random.nat)]
(random.ascii/alpha size)))
(def: .public test
Test
(<| (_.covering /._)
(_.for [/.Buffer])
(do random.monad
[left ..part
mid ..part
right ..part]
($_ _.and
(_.cover [/.empty]
(n.= 0(/.size /.empty)))
(_.cover [/.size /.then]
(n.= (text.size left)
(/.size (/.then left /.empty))))
(_.cover [/.text]
(text\= (format left mid right)
(|> /.empty
(/.then left)
(/.then mid)
(/.then right)
/.text)))
))))
|
