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|
(.module:
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[control
["." io]]
[math
["." random]
[number
["n" nat]]]]
{1
["." /]})
(def: #export test
Test
(<| (_.covering /._)
($_ _.and
(do random.monad
[expected random.nat
#let [box (/.atom expected)]]
(_.cover [/.Atom /.atom /.read]
(io.run
(do io.monad
[actual (/.read box)]
(wrap (is? expected actual))))))
(do random.monad
[target random.nat
unknown (random.filter (|>> (is? target) not) random.nat)
expected random.nat
#let [box (/.atom target)]]
(_.cover [/.compare_and_swap]
(io.run
(do io.monad
[swapped_unknown? (/.compare_and_swap unknown expected box)
swapped_target? (/.compare_and_swap target expected box)
actual (/.read box)]
(wrap (and (not swapped_unknown?)
swapped_target?
(is? expected actual)))))))
(do random.monad
[init random.nat
shift random.nat
#let [box (/.atom init)]]
(_.cover [/.update]
(io.run
(do io.monad
[[pre post] (/.update (n.+ shift) box)]
(wrap (and (is? init pre)
(n.= (n.+ shift init)
post)))))))
(do random.monad
[pre random.nat
post random.nat
#let [box (/.atom pre)]]
(_.cover [/.write]
(io.run
(do io.monad
[old (/.write post box)
new (/.read box)]
(wrap (and (is? pre old)
(is? post new)))))))
)))
|
