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|
(.using
[library
[lux "*"
["_" test (.only Test)]
[abstract
[monad (.only do)]]
[data
["[0]" text ("[1]#[0]" equivalence)
["%" format (.only format)]]]
[math
["[0]" random (.only Random)]
[number
["n" nat]]]]]
[\\library
["[0]" /]])
(def: part
(Random Text)
(do [! random.monad]
[size (# ! each (|>> (n.% 10) ++) random.nat)]
(random.alphabetic size)))
(def: .public test
Test
(<| (_.covering /._)
(_.for [/.Buffer])
(do random.monad
[left ..part
mid ..part
right ..part]
(all _.and
(_.coverage [/.empty]
(n.= 0(/.size /.empty)))
(_.coverage [/.size /.then]
(n.= (text.size left)
(/.size (/.then left /.empty))))
(_.coverage [/.text]
(text#= (format left mid right)
(|> /.empty
(/.then left)
(/.then mid)
(/.then right)
/.text)))
))))
|
