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(.module:
[library
[lux "*"
["_" test {"+" Test}]
[abstract
[monad {"+" do}]
[\\specification
["$[0]" equivalence]
["$[0]" order]
["$[0]" enum]
["$[0]" codec]]]
[control
["[0]" function]
["[0]" try]
["[0]" io]]
[data
[collection
["[0]" list ("[1]#[0]" mix)]]]
[math
["[0]" random]]
[time
["[0]" duration {"+" Duration}]
["[0]" day {"+" Day} ("[1]#[0]" enum)]]]]
[\\library
["[0]" /]])
(def: .public test
Test
(<| (_.covering /._)
(_.for [/.Instant])
($_ _.and
(_.for [/.equivalence]
($equivalence.spec /.equivalence random.instant))
(_.for [/.order]
($order.spec /.order random.instant))
(_.for [/.enum]
($enum.spec /.enum random.instant))
(_.for [/.codec]
($codec.spec /.equivalence /.codec random.instant))
(do random.monad
[.let [(^open "#[0]") /.equivalence]
expected random.instant]
($_ _.and
(_.cover [/.millis /.of_millis]
(|> expected /.millis /.of_millis (#= expected)))
(_.cover [/.relative /.absolute]
(|> expected /.relative /.absolute (#= expected)))
(_.cover [/.date /.time /.of_date_time]
(#= expected
(/.of_date_time (/.date expected)
(/.time expected))))
))
(do random.monad
[.let [(^open "#[0]") /.equivalence
(^open "duration#[0]") duration.equivalence]
from random.instant
to random.instant]
($_ _.and
(_.cover [/.span]
(|> from (/.span from) (duration#= duration.empty)))
(_.cover [/.after]
(|> from (/.after (/.span from to)) (#= to)))
(_.cover [/.epoch]
(duration#= (/.relative to)
(/.span /.epoch to)))
))
(do random.monad
[instant random.instant
.let [d0 (/.day_of_week instant)]]
(_.cover [/.day_of_week]
(let [apply (: (-> (-> Duration Duration) (-> Day Day) Nat Bit)
(function (_ polarity move steps)
(let [day_shift (list#mix (function.constant move)
d0
(list.repeated steps []))
instant_shift (|> instant
(/.after (polarity (duration.up steps duration.day)))
/.day_of_week)]
(day#= day_shift
instant_shift))))]
(and (apply function.identity day#succ 0)
(apply function.identity day#succ 1)
(apply function.identity day#succ 2)
(apply function.identity day#succ 3)
(apply function.identity day#succ 4)
(apply function.identity day#succ 5)
(apply function.identity day#succ 6)
(apply function.identity day#succ 7)
(apply duration.inverse day#pred 0)
(apply duration.inverse day#pred 1)
(apply duration.inverse day#pred 2)
(apply duration.inverse day#pred 3)
(apply duration.inverse day#pred 4)
(apply duration.inverse day#pred 5)
(apply duration.inverse day#pred 6)
(apply duration.inverse day#pred 7)))))
(_.cover [/.now]
(case (try (io.run! /.now))
{try.#Success _}
true
{try.#Failure _}
false))
)))
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