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|
(.module:
[library
[lux "*"
["_" test {"+" [Test]}]
[abstract
[monad {"+" [do]}]]
[data
["." bit ("#\." equivalence)]
[text
["%" format {"+" [format]}]]]
[math
["." random {"+" [Random]}]
[number
["n" nat]]]]]
[\\library
["." /]])
(def: test_let
Test
(do {! random.monad}
[sample (\ ! each (n.% 10) random.nat)
.let [expected (n.even? sample)]]
(<| (_.cover [/.let])
(/.let [(even? number)
(-> Nat Bit)
(case number
0 true
_ (odd? (-- number)))
(odd? number)
(-> Nat Bit)
(case number
0 false
_ (even? (-- number)))]
(and (bit\= expected (even? sample))
(bit\= (not expected) (odd? sample)))))))
(/.def:
[(even? number)
(-> Nat Bit)
(case number
0 true
_ (odd? (-- number)))]
[(odd? number)
(-> Nat Bit)
(case number
0 false
_ (even? (-- number)))])
(def: test_def
Test
(do {! random.monad}
[sample (\ ! each (n.% 10) random.nat)
.let [expected (n.even? sample)]]
(<| (_.cover [/.def:])
(and (bit\= expected (..even? sample))
(bit\= (not expected) (..odd? sample))))))
(def: .public test
Test
(<| (_.covering /._)
($_ _.and
..test_let
..test_def
)))
|
