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|
(.using
[library
[lux "*"
["_" test (.only Test)]
["@" target]
[abstract
["[0]" monad (.only do)]
["[0]" enum]]
[control
["[0]" io]
["[0]" maybe]
["[0]" try]
["[0]" exception (.only exception:)]
[concurrency
["[0]" async (.only Async)]
["[0]" atom (.only Atom)]]]
[data
["[0]" text ("[1]#[0]" equivalence)
["%" format (.only format)]]
[collection
["[0]" list ("[1]#[0]" functor)]]]
[math
["[0]" random]
[number
["n" nat]
["[0]" i64]]]
[type
["[0]" refinement]]]]
[\\library
["[0]" /]])
(def: delay
(for @.js (i64.left_shifted 4 1)
(i64.left_shifted 3 1)))
(def: semaphore
Test
(_.for [/.Semaphore]
(all _.and
(do [! random.monad]
[initial_open_positions (|> random.nat (# ! each (|>> (n.% 10) (n.max 1))))
.let [semaphore (/.semaphore initial_open_positions)]]
(in (do async.monad
[result (async.within ..delay (/.wait! semaphore))]
(_.coverage' [/.semaphore]
(case result
{.#Some _}
true
{.#None}
false)))))
(do [! random.monad]
[initial_open_positions (|> random.nat (# ! each (|>> (n.% 10) (n.max 1))))
.let [semaphore (/.semaphore initial_open_positions)]]
(in (do [! async.monad]
[_ (monad.each ! /.wait! (list.repeated initial_open_positions semaphore))
result (async.within ..delay (/.wait! semaphore))]
(_.coverage' [/.wait!]
(case result
{.#Some _}
false
{.#None}
true)))))
(do [! random.monad]
[initial_open_positions (|> random.nat (# ! each (|>> (n.% 10) (n.max 1))))
.let [semaphore (/.semaphore initial_open_positions)]]
(in (do [! async.monad]
[_ (monad.each ! /.wait! (list.repeated initial_open_positions semaphore))
.let [block (/.wait! semaphore)]
result/0 (async.within ..delay block)
open_positions (/.signal! semaphore)
result/1 (async.within ..delay block)]
(_.coverage' [/.signal!]
(case [result/0 result/1 open_positions]
[{.#None} {.#Some _} {try.#Success +0}]
true
_
false)))))
(do [! random.monad]
[initial_open_positions (|> random.nat (# ! each (|>> (n.% 10) (n.max 1))))
.let [semaphore (/.semaphore initial_open_positions)]]
(in (do async.monad
[outcome (/.signal! semaphore)]
(_.coverage' [/.semaphore_is_maxed_out]
(case outcome
{try.#Failure error}
(exception.match? /.semaphore_is_maxed_out error)
_
false)))))
)))
(def: mutex
Test
(_.for [/.Mutex]
(all _.and
(do [! random.monad]
[repetitions (|> random.nat (# ! each (|>> (n.% 100) (n.max 10))))
.let [resource (atom.atom "")
expected_As (text.together (list.repeated repetitions "A"))
expected_Bs (text.together (list.repeated repetitions "B"))
mutex (/.mutex [])
processA (<| (/.synchronize! mutex)
io.io
async.future
(do [! io.monad]
[_ (<| (monad.all !)
(list.repeated repetitions)
(atom.update! (|>> (format "A")) resource))]
(in [])))
processB (<| (/.synchronize! mutex)
io.io
async.future
(do [! io.monad]
[_ (<| (monad.all !)
(list.repeated repetitions)
(atom.update! (|>> (format "B")) resource))]
(in [])))]]
(in (do async.monad
[_ processA
_ processB
.let [outcome (io.run! (atom.read! resource))]]
(_.coverage' [/.mutex /.synchronize!]
(or (text#= (format expected_As expected_Bs)
outcome)
(text#= (format expected_Bs expected_As)
outcome))))))
)))
(def: (waiter resource barrier id)
(-> (Atom Text) /.Barrier Nat (Async Any))
(do async.monad
[_ (/.block! barrier)
_ (async.future (atom.update! (|>> (format (%.nat id))) resource))]
(in [])))
(def: barrier
Test
(_.for [/.Barrier]
(all _.and
(do random.monad
[raw random.nat]
(_.coverage [/.Limit /.limit]
(case [raw (/.limit raw)]
[0 {.#None}]
true
[_ {.#Some limit}]
(and (n.> 0 raw)
(n.= raw (refinement.value limit)))
_
false)))
(do [! random.monad]
[limit (# ! each (|>> (n.% 9) ++) random.nat)
.let [barrier (/.barrier (maybe.trusted (/.limit limit)))
resource (atom.atom "")]]
(in (do [! async.monad]
[.let [suffix "_"
expected_ending (|> suffix
(list.repeated limit)
text.together)
expected_ids (enum.range n.enum 0 (-- limit))]
_ (|> expected_ids
(list#each (function (_ id)
(exec
(io.run! (atom.update! (|>> (format suffix)) resource))
(waiter resource barrier id))))
(monad.all !))
.let [outcome (io.run! (atom.read! resource))]]
(_.coverage' [/.barrier /.block!]
(and (text.ends_with? expected_ending outcome)
(list.every? (function (_ id)
(text.contains? (%.nat id) outcome))
expected_ids))))))
)))
(def: .public test
Test
(<| (_.covering /._)
(all _.and
..semaphore
..mutex
..barrier
)))
|
