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(.module:
  [lux #*
   ["_" test (#+ Test)]
   ["." time]
   [abstract
    [monad (#+ do)]]
   [control
    ["." try ("#\." functor)]
    [parser
     ["<.>" text]]]
   [math
    ["." random (#+ Random)]
    [number
     ["n" nat]
     ["i" int]]]]
  {#program
   ["." /]})

(def: #export random
  (Random /.Time)
  (random.one (|>> time.clock (set@ #time.milli_second 0) time.time)
              random.time))

(def: #export test
  Test
  (<| (_.covering /._)
      (_.for [/.Time])
      ($_ _.and
          (do random.monad
            [expected ..random]
            (_.cover [/.format /.parser]
                     (|> expected
                         /.format
                         (<text>.run /.parser)
                         (try\map (\ time.equivalence = expected))
                         (try.default false))))
          )))