(.module:
  [library
   [lux "*"
    ["_" test {"+" [Test]}]
    ["[0]" time]
    [abstract
     [monad {"+" [do]}]]
    [control
     ["[0]" try ("[1]#[0]" functor)]
     [parser
      ["<[0]>" text]]]
    [math
     ["[0]" random {"+" [Random]}]
     [number
      ["n" nat]
      ["i" int]]]]]
  [\\program
   ["[0]" /]])

(def: .public random
  (Random /.Time)
  (random.one (|>> time.clock
                   (with@ time.#milli_second 0)
                   time.time)
              random.time))

(def: .public test
  Test
  (<| (_.covering /._)
      (_.for [/.Time])
      ($_ _.and
          (do random.monad
            [expected ..random]
            (_.cover [/.format /.parser]
                     (|> expected
                         /.format
                         (<text>.result /.parser)
                         (try#each (# time.equivalence = expected))
                         (try.else false))))
          )))