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

(def: #export random
  (Random /.Build)
  random.nat)

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