(.module:
  [lux #*
   ["_" test (#+ Test)]
   [abstract
    [monad (#+ do)]
    {[0 #spec]
     [/
      ["$." equivalence]]}]
   [control
    ["." try ("#\." functor)]
    [parser
     ["<.>" xml]]]
   [math
    ["." random (#+ Random)]]
   [time
    ["." instant]]]
  {#program
   ["." /]}
  ["$." // #_
   ["#." time]
   ["#." build]])

(def: #export random
  (Random /.Stamp)
  ($_ random.and
      $//time.random
      $//build.random
      ))

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

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