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path: root/stdlib/source/specification/lux/abstract/interval.lux
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(.module:
  [library
   [lux "*"
    ["_" test {"+" Test}]
    [abstract
     [monad {"+" do}]
     ["[0]" order]]
    [math
     ["[0]" random {"+" Random}]]]]
  [\\library
   ["[0]" /]])

(def: .public (spec (^open "@//[0]") gen_sample)
  (All (_ a) (-> (/.Interval a) (Random a) Test))
  (<| (_.for [/.Interval])
      (do random.monad
        [sample gen_sample]
        ($_ _.and
            (_.test "No value is bigger than the top."
                    (@//< @//top sample))
            (_.test "No value is smaller than the bottom."
                    (order.> @//&order @//bottom sample))
            ))))