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(.module:
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[control
["." io]]
[math
["." random]
[number
["n" nat]]]]
{1
["." /]})
(def: #export test
Test
(<| (_.covering /._)
(do random.monad
[value random.nat
swap_value random.nat
set_value random.nat
#let [box (/.atom value)]]
($_ _.and
(_.cover [/.Atom /.atom /.read]
(n.= value
(io.run (/.read box))))
(_.cover [/.compare_and_swap]
(and (io.run (/.compare_and_swap value swap_value box))
(n.= swap_value
(io.run (/.read box)))))
(_.cover [/.update]
(exec (io.run (/.update inc box))
(n.= (inc swap_value)
(io.run (/.read box)))))
(_.cover [/.write]
(exec (io.run (/.write set_value box))
(n.= set_value
(io.run (/.read box)))))
))))
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