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(.module:
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]]
[control
[io (#+ IO)]
["." try]
[security
["!" capability]]
[concurrency
["." promise (#+ Promise)]]]
[math
["." random]]]
{1
["." /]})
(def: #export (spec console)
(-> (IO (/.Console Promise)) Test)
(<| (_.for [/.Console])
(do {! random.monad}
[message (random.ascii/alpha 10)]
(wrap (do promise.monad
[console (promise.future console)
?read (!.use (\ console read) [])
?read_line (!.use (\ console read_line) [])
?write (!.use (\ console write) [message])
?close/good (!.use (\ console close) [])
?close/bad (!.use (\ console close) [])]
($_ _.and'
(_.cover' [/.Can_Read]
(case [?read ?read_line]
[(#try.Success _) (#try.Success _)]
true
_
false))
(_.cover' [/.Can_Write]
(case ?write
(#try.Success _)
true
_
false))
(_.cover' [/.Can_Close]
(case [?close/good ?close/bad]
[(#try.Success _) (#try.Failure _)]
true
_
false))
))))))
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