blob: 8f379472e70937d580d04c2a5f0bdb7816e6e9e4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
(.using
[library
[lux "*"
["_" test {"+" Test}]
[abstract
[equivalence {"+" Equivalence}]
[monad {"+" do}]]
[control
["[0]" function]]
[math
["[0]" random]
[number
["n" nat]]]]]
[\\library
["[0]" / {"+" Functor}]])
(def: (identity equivalence value (open "@//[0]"))
(All (_ f a) (-> (Equivalence (f a)) (f a) (Functor f) Test))
(_.test "Law of identity."
(equivalence
(@//each function.identity value)
value)))
(def: .public (spec equivalence value functor)
(All (_ f a) (-> (Equivalence (f a)) (f a) (Functor f) Test))
(do random.monad
[sample random.nat]
(<| (_.for [/.Functor])
($_ _.and
(..identity equivalence value functor)
))))
|
