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... This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
... If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
(.require
[library
[lux (.except)
[abstract
[monad (.only do)]
["[0]" equivalence
["[1]T" \\test]]]
[control
["[0]" try (.use "[1]#[0]" functor)]
["[0]" exception]]
[data
["[0]" text
["<[1]>" \\parser]]]
[math
["[0]" random (.only Random)]
[number
["n" nat]
["i" int]]]
[world
[time
["[0]" date (.use "[1]#[0]" equivalence)]
["[0]" year]]]
[test
["_" property (.only Test)]]]]
[\\program
["[0]" /]])
(def .public random
(Random /.Date)
(random.one (function (_ raw)
(try.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 .public test
Test
(<| (_.covering /._)
(_.for [/.Date])
(do random.monad
[expected ..random
candidate random.date]
(all _.and
(_.for [/.equivalence]
(equivalenceT.spec /.equivalence ..random))
(_.coverage [/.format /.parser]
(|> expected
/.format
(<text>.result /.parser)
(try#each (of /.equivalence = expected))
(try.else false)))
(_.coverage [/.value /.date]
(|> expected
/.value
/.date
(try#each (of /.equivalence = expected))
(try.else false)))
(_.coverage [/.year_is_out_of_range]
(when (/.date candidate)
{try.#Success date}
(same? candidate (/.value date))
{try.#Failure error}
(exception.match? /.year_is_out_of_range error)))
(_.coverage [/.epoch]
(date#= date.epoch (/.value /.epoch)))
))))
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