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(.require
 [library
  [lux (.except)
   [abstract
    [monad (.only do)]
    [\\specification
     ["$[0]" equivalence]]]
   [control
    ["[0]" try (.use "[1]#[0]" functor)]]
   [data
    [format
     ["[0]" xml
      ["<[1]>" \\parser]]]]
   [math
    ["[0]" random (.only Random)]]
   [world
    [time
     ["[0]" instant]]]
   [test
    ["_" property (.only Test)]]]]
 [\\program
  ["[0]" /]]
 ["$[0]" //
  ["[1][0]" time]
  ["[1][0]" build]])

(def .public random
  (Random /.Stamp)
  (all random.and
       $//time.random
       $//build.random
       ))

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

           (do random.monad
             [expected ..random]
             (_.coverage [/.format /.parser]
               (|> expected
                   /.format
                   (<xml>.result /.parser)
                   (try#each (at /.equivalence = expected))
                   (try.else false))))
           )))