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|
(.module:
[lux #*
["%" data/text/format (#+ format)]
["_" test (#+ Test)]
[math
["." random (#+ Random)]]
[abstract
[monad (#+ do)]
[equivalence (#+ Equivalence)
{[0 #poly]
["." /]}]]
[data
["." bit]
["." maybe]
[number
["n" nat]
["i" int]]
["." text]
[collection
["." list]]]
[macro
[poly (#+ derived:)]]])
(type: Variant
(#Case0 Bit)
(#Case1 Int)
(#Case2 Frac))
(type: #rec Recursive
(#Number Frac)
(#Addition Frac Recursive))
(type: Record
{#bit Bit
#int Int
#frac Frac
#text Text
#maybe (Maybe Int)
#list (List Int)
#variant Variant
#tuple [Int Frac Text]
#recursive Recursive})
(def: gen_recursive
(Random Recursive)
(random.rec (function (_ gen_recursive)
(random.or random.safe_frac
(random.and random.safe_frac
gen_recursive)))))
(def: gen_record
(Random Record)
(do {! random.monad}
[size (\ ! map (n.% 2) random.nat)
#let [gen_int (|> random.int (\ ! map (|>> i.abs (i.% +1,000,000))))]]
($_ random.and
random.bit
gen_int
random.safe_frac
(random.unicode size)
(random.maybe gen_int)
(random.list size gen_int)
($_ random.or
random.bit
gen_int
random.safe_frac)
($_ random.and
gen_int
random.safe_frac
(random.unicode size))
gen_recursive)))
(derived: equivalence
(/.equivalence Record))
(def: #export test
Test
(<| (_.context (%.name (name_of /._)))
(do random.monad
[sample gen_record
#let [(^open "/\.") ..equivalence]]
(_.test "Every instance equals itself."
(/\= sample sample)))))
|
