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