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(.module:
  [library
   [lux #*
    ["_" test (#+ Test)]
    [abstract
     [monad (#+ do)]
     [\\specification
      ["$." equivalence]]]
    [control
     ["." try ("#\." functor)]
     [parser
      ["<.>" text]]]
    [math
     ["." random (#+ Random)]]]]
  [\\program
   ["." /]]
  ["$." /// #_
   ["#." time]])

(def: #export random
  (Random /.Time)
  $///time.random)

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

          (do random.monad
            [expected ..random]
            ($_ _.and
                (_.cover [/.format /.parser]
                         (|> expected
                             /.format
                             (<text>.run /.parser)
                             (try\map (\ /.equivalence = expected))
                             (try.else false)))
                ))
          )))