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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]]
["[0]" codec
["[1]T" \\test]]]
[control
["[0]" try]
["[0]" exception]]
[data
["[0]" binary (.only Binary)]
[text
["%" \\format (.only format)]]]
[math
["[0]" random (.only Random)]
[number
["n" nat]]]
[test
["_" property (.only Test)]]]]
[\\program
["[0]" /]]
[test
[lux
[data
["_[0]" binary]]]])
(def .public (random hash)
(All (_ h)
(-> (-> Binary (/.Hash h))
(Random (/.Hash h))))
(do [! random.monad]
[size (of ! each (n.% 100) random.nat)]
(of ! each hash (_binary.random size))))
(def .public test
Test
(<| (_.covering /._)
(_.for [/.Hash /.SHA1 /.MD5])
(`` (all _.and
(_.for [/.equivalence]
(all _.and
(equivalenceT.spec /.equivalence (..random /.sha1))
(equivalenceT.spec /.equivalence (..random /.md5))
))
(_.for [/.data]
(all _.and
(,, (with_template [<hash> <constructor> <exception>]
[(do random.monad
[expected (..random <hash>)]
(_.coverage [<hash> <constructor> <exception>]
(and (when (<constructor> (/.data expected))
{try.#Success actual}
(of /.equivalence = expected actual)
{try.#Failure error}
false)
(when (<constructor> (of binary.monoid composite
(/.data expected)
(/.data expected)))
{try.#Success actual}
false
{try.#Failure error}
(exception.match? <exception> error)))))]
[/.sha1 /.as_sha1 /.not_a_sha1]
[/.md5 /.as_md5 /.not_a_md5]
))))
(,, (with_template [<codec> <hash>]
[(_.for [<codec>]
(codecT.spec /.equivalence <codec> (..random <hash>)))]
[/.sha1_codec /.sha1]
[/.md5_codec /.md5]
))
(_.for [/.not_a_hash]
(all _.and
(,, (with_template [<codec> <hash>]
[(do random.monad
[expected (..random <hash>)]
(_.coverage [<codec>]
(when (of <codec> decoded
(format (of <codec> encoded expected)
"AABBCC"))
{try.#Success actual}
false
{try.#Failure error}
(exception.match? /.not_a_hash error))))]
[/.sha1_codec /.sha1]
[/.md5_codec /.md5]
))))
))))
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