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(.using
 [library
  [lux "*"
   ["_" test (.only Test)]
   [abstract
    [monad (.only do)]
    [\\specification
     ["$[0]" equivalence]
     ["$[0]" hash]
     ["$[0]" order]
     ["$[0]" codec]]]
   [data
    ["[0]" text]]
   [macro
    ["^" pattern]]
   [math
    ["[0]" random (.only Random)]
    [number
     ["n" nat]]]]]
 [\\library
  ["[0]" /]])

(def: .public (random module_size short_size)
  (-> Nat Nat (Random Symbol))
  (random.and (random.alphabetic module_size)
              (random.alphabetic short_size)))

(def: .public test
  Test
  (<| (_.covering /._)
      (do [! random.monad]
        [... First Symbol
         sizeM1 (|> random.nat (# ! each (n.% 100)))
         sizeS1 (|> random.nat (# ! each (|>> (n.% 100) (n.max 1))))
         (^.let symbol1 [module1 short1]) (..random sizeM1 sizeS1)
         ... Second Symbol
         sizeM2 (|> random.nat (# ! each (n.% 100)))
         sizeS2 (|> random.nat (# ! each (|>> (n.% 100) (n.max 1))))
         (^.let symbol2 [module2 short2]) (..random sizeM2 sizeS2)]
        (_.for [.Symbol]
               (all _.and
                    (_.for [/.equivalence]
                           ($equivalence.spec /.equivalence (..random sizeM1 sizeS1)))
                    (_.for [/.hash]
                           (|> (random.ascii 1)
                               (# ! each (|>> [""]))
                               ($hash.spec /.hash)))
                    (_.for [/.order]
                           ($order.spec /.order (..random sizeM1 sizeS1)))
                    (_.for [/.codec]
                           (_.and ($codec.spec /.equivalence /.codec (..random sizeM1 sizeS1))
                                  (_.property "Encoding a symbol without a module component results in text equal to the short of the symbol."
                                    (if (text.empty? module1)
                                      (same? short1 (# /.codec encoded symbol1))
                                      #1))))

                    (_.coverage [/.separator]
                      (let [it (# /.codec encoded symbol1)]
                        (if (text.empty? module1)
                          (same? short1 it)
                          (text.contains? /.separator it))))
                    (_.coverage [/.module /.short]
                      (and (same? module1 (/.module symbol1))
                           (same? short1 (/.short symbol1))))
                    (_.for [.symbol]
                           (let [(open "/#[0]") /.equivalence]
                             (all _.and
                                  (_.property "Can obtain Symbol from a symbol."
                                    (and (/#= [.prelude_module "yolo"] (.symbol .yolo))
                                         (/#= ["test/lux/meta/symbol" "yolo"] (.symbol ..yolo))
                                         (/#= ["" "yolo"] (.symbol yolo))
                                         (/#= ["library/lux/test" "yolo"] (.symbol library/lux/test.yolo)))))))
                    )))))