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(.module:
  [library
   [lux #*
    ["_" test (#+ Test)]
    [abstract
     [monad (#+ do)]
     [\\specification
      ["$." equivalence]]]
    [data
     ["." binary #_
      ["#T" \\test]]]
    [math
     ["." random (#+ Random) ("#\." monad)]]]]
  ["$." /// #_
   ["#." hash]]
  [\\program
   ["." /
    ["//#" /// #_
     ["#." hash]]]])

(def: #export random
  (Random /.Status)
  ($_ random.or
      (random\wrap [])
      (random.or ($///hash.random ///hash.sha-1)
                 ($///hash.random ///hash.md5))
      (random.and ($///hash.random ///hash.sha-1)
                  ($///hash.random ///hash.md5))
      ))

(def: #export test
  Test
  (<| (_.covering /._)
      (_.for [/.Status]
             ($_ _.and
                 (_.for [/.equivalence]
                        ($equivalence.spec /.equivalence ..random))

                 (do random.monad
                   [payload (binaryT.random 1)]
                   (_.cover [/.verified]
                            (case (/.verified payload)
                              (#/.Verified sha1 md5)
                              true

                              _
                              false)))
                 ))))