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(.using
 [library
  [lux "*"
   ["_" test {"+" Test}]
   [abstract
    [monad {"+" do}]
    [\\specification
     ["$[0]" equivalence]]]
   [control
    ["[0]" try ("[1]#[0]" functor)]
    [parser
     ["<[0]>" xml]]]
   [math
    ["[0]" random {"+" Random}]]
   [time
    ["[0]" instant]]]]
 [\\program
  ["[0]" /]]
 ["$[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]
             (_.cover [/.format /.parser]
                      (|> expected
                          /.format
                          (<xml>.result /.parser)
                          (try#each (# /.equivalence = expected))
                          (try.else false))))
           )))