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|
(.module:
[library
[lux #*
["_" test (#+ Test)]
[abstract
[monad (#+ do)]
[\\specification
["$." equivalence]]]
[control
["." try ("#\." functor)]
["." exception]
[parser
["<.>" text]]]
[math
["." random (#+ Random)]
[number
["n" nat]
["i" int]]]
[time
["." date ("#\." equivalence)]
["." year]]]]
[\\program
["." /]])
(def: #export random
(Random /.Date)
(random.one (function (_ raw)
(try.to_maybe
(do try.monad
[year (|> raw date.year year.value i.abs (i.% +9,000) (i.+ +1,000) year.year)
raw (date.date year
(date.month raw)
(date.day_of_month raw))]
(/.date raw))))
random.date))
(def: #export test
Test
(<| (_.covering /._)
(_.for [/.Date])
(do random.monad
[expected ..random
candidate random.date]
($_ _.and
(_.for [/.equivalence]
($equivalence.spec /.equivalence ..random))
(_.cover [/.format /.parser]
(|> expected
/.format
(<text>.run /.parser)
(try\map (\ /.equivalence = expected))
(try.default false)))
(_.cover [/.value /.date]
(|> expected
/.value
/.date
(try\map (\ /.equivalence = expected))
(try.default false)))
(_.cover [/.year_is_out_of_range]
(case (/.date candidate)
(#try.Success date)
(is? candidate (/.value date))
(#try.Failure error)
(exception.match? /.year_is_out_of_range error)))
(_.cover [/.epoch]
(date\= date.epoch (/.value /.epoch)))
))))
|
