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(.module:
[lux #*
["_" test (#+ Test)]
[abstract
["." monad (#+ Monad do)]
{[0 #spec]
[/
["$." functor (#+ Injection Comparison)]
["$." apply]
["$." monad]]}]
[control
["." io (#+ IO)]]
[data
["." product]
[number
["n" nat]]
[collection
["." list ("#\." functor)]]]
[math
["." random]]]
{1
["." /
[//
["." atom (#+ Atom atom)]
["." promise]
["." frp (#+ Channel)]]]})
(def: injection
(Injection /.STM)
(\ /.monad wrap))
(def: comparison
(Comparison /.STM)
(function (_ == left right)
(== (product.right (left (list)))
(product.right (right (list))))))
(def: #export test
Test
(<| (_.covering /._)
(do {! random.monad}
[dummy random.nat
expected random.nat
iterations-per-process (|> random.nat (\ ! map (n.% 100)))]
($_ _.and
(_.with-cover [/.functor]
($functor.spec ..injection ..comparison /.functor))
(_.with-cover [/.apply]
($apply.spec ..injection ..comparison /.apply))
(_.with-cover [/.monad]
($monad.spec ..injection ..comparison /.monad))
(wrap (do promise.monad
[actual (/.commit (\ /.monad wrap expected))]
(_.cover' [/.commit]
(n.= expected actual))))
(wrap (do promise.monad
[actual (/.commit (/.read (/.var expected)))]
(_.cover' [/.Var /.var /.read]
(n.= expected actual))))
(wrap (do promise.monad
[actual (let [box (/.var dummy)]
(/.commit (do /.monad
[_ (/.write expected box)]
(/.read box))))
verdict (let [box (/.var dummy)]
(/.commit (do /.monad
[_ (/.write expected box)
actual (/.read box)]
(wrap (n.= expected actual)))))]
(_.cover' [/.write]
(and (n.= expected actual)
verdict))))
(wrap (do promise.monad
[#let [box (/.var dummy)]
output (/.commit (do /.monad
[_ (/.update (n.+ expected) box)]
(/.read box)))]
(_.cover' [/.update]
(n.= (n.+ expected dummy)
output))))
(wrap (do promise.monad
[#let [box (/.var dummy)
[follower sink] (io.run (/.follow box))]
_ (/.commit (/.write expected box))
_ (/.commit (/.update (n.* 2) box))
_ (promise.future (\ sink close))
_ (/.commit (/.update (n.* 3) box))
changes (frp.consume follower)]
(_.cover' [/.follow]
(\ (list.equivalence n.equivalence) =
(list expected (n.* 2 expected))
changes))))
(wrap (let [var (/.var 0)]
(do {! promise.monad}
[_ (|> (list.repeat iterations-per-process [])
(list\map (function (_ _) (/.commit (/.update inc var))))
(monad.seq !))
cummulative (/.commit (/.read var))]
(_.cover' [/.STM]
(n.= iterations-per-process
cummulative)))))
))))
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