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(.module:
  [lux #*
   ["_" test (#+ Test)]
   [abstract
    [monad (#+ do)]
    {[0 #spec]
     [/
      ["$." equivalence]]}]
   [control
    ["." try ("#\." functor)]
    [parser
     ["<.>" xml]]]
   [math
    [number
     ["n" nat]]]
   ["." time
    ["." date]
    ["." year]
    ["." month]
    ["." instant]
    ["." duration]]
   [math
    ["." random (#+ Random)]]
   [macro
    ["." code]]]
  {#program
   ["." /]})

(def: #export random
  (Random /.Metadata)
  ($_ random.and
      (random.ascii/alpha 5)
      (random.ascii/alpha 5)
      (random.list 5 (random.ascii/alpha 5))
      (do {! random.monad}
        [year (\ ! map (|>> (n.% 10,000) .int) random.nat)
         month (\ ! map (n.% 13) random.nat)
         day_of_month (\ ! map (n.% 29) random.nat)
         hour (\ ! map (n.% 24) random.nat)
         minute (\ ! map (n.% 60) random.nat)
         second (\ ! map (n.% 60) random.nat)]
        (wrap (try.assume
               (do try.monad
                 [year (year.year year)
                  month (month.by_number month)
                  date (date.date year month day_of_month)
                  time (time.time
                        {#time.hour hour
                         #time.minute minute
                         #time.second second
                         #time.milli_second 0})]
                 (wrap (instant.from_date_time date time))))))))

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