Source file selective.ml
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open QCheck2
module Suite
(R : Model.COVARIANT_1)
(F : Preface_specs.SELECTIVE with type 'a t = 'a R.t)
(A : Model.T0)
(B : Model.T0)
(C : Model.T0) =
struct
module Laws = Preface_laws.Selective.For (F)
module Applicative = Applicative.Suite (R) (F) (A) (B) (C)
let print pp = Format.asprintf "%a" (R.pp pp)
let selective_1 count =
let generator = R.generator (Util.gen_either A.generator A.generator) in
let print = print (Util.pp_either A.pp A.pp) in
Util.test ~count ~print generator Laws.selective_1 (fun lhs rhs x ->
let left = lhs x
and right = rhs x in
R.equal A.equal left right )
;;
let selective_2 count =
let generator =
let f = R.generator (fun1 A.observable B.generator) in
Gen.tup3 (Util.gen_either A.generator B.generator) f f
in
let print (e, _, _) = Format.asprintf "%a" (Util.pp_either A.pp B.pp) e in
Util.test ~count ~print generator Laws.selective_2
(fun lhs rhs (e, ff, gg) ->
let f = F.(Fn.apply <$> ff)
and g = F.(Fn.apply <$> gg) in
let left = lhs e f g
and right = rhs e f g in
R.equal B.equal left right )
;;
let selective_3 count =
let generator =
let f =
R.generator
(Util.gen_either C.generator (fun1 A.observable B.generator))
and g = R.generator (fun2 C.observable A.observable B.generator) in
Gen.tup3 (R.generator (Util.gen_either A.generator B.generator)) f g
in
let print (e, _, _) = print (Util.pp_either A.pp B.pp) e in
Util.test ~count ~print generator Laws.selective_3
(fun lhs rhs (e, ff, gg) ->
let f = F.(Stdlib.Either.map_right Fn.apply <$> ff)
and g = F.(Fn.apply <$> gg) in
let left = lhs e f g
and right = rhs e f g in
R.equal B.equal left right )
;;
let selective_4 count =
let generator =
Gen.tup3
(fun1 A.observable B.generator)
(R.generator (Util.gen_either C.generator A.generator))
(R.generator (fun1 C.observable A.generator))
in
let print (_, e, _) = print (Util.pp_either C.pp A.pp) e in
Util.test ~count ~print generator Laws.selective_4
(fun lhs rhs (ff, e, gg) ->
let f = Fn.apply ff
and g = F.(Fn.apply <$> gg) in
let left = lhs f e g
and right = rhs f e g in
R.equal B.equal left right )
;;
let selective_5 count =
let generator =
Gen.tup3
(fun1 A.observable B.generator)
(R.generator (Util.gen_either A.generator C.generator))
(R.generator (fun1 B.observable C.generator))
in
let print (_, e, _) = print (Util.pp_either A.pp C.pp) e in
Util.test ~count ~print generator Laws.selective_5
(fun lhs rhs (ff, e, gg) ->
let f = Fn.apply ff
and g = F.(Fn.apply <$> gg) in
let left = lhs f e g
and right = rhs f e g in
R.equal C.equal left right )
;;
let selective_6 count =
let generator =
Gen.tup3
(fun2 A.observable B.observable C.generator)
(R.generator (Util.gen_either B.generator C.generator))
(R.generator A.generator)
in
let print (_, x, y) =
Print.tup2 (print @@ Util.pp_either B.pp C.pp) (print A.pp) (x, y)
in
Util.test ~count ~print generator Laws.selective_6
(fun lhs rhs (ff, x, y) ->
let f = Fn.apply ff in
let left = lhs f x y
and right = rhs f x y in
R.equal C.equal left right )
;;
let selective_7 count =
let generator =
Gen.tup2
(R.generator (Util.gen_either A.generator B.generator))
(fun1 A.observable B.generator)
in
let print (x, _) = print (Util.pp_either A.pp B.pp) x in
Util.test ~count ~print generator Laws.selective_7 (fun lhs rhs (x, ff) ->
let f = Fn.apply ff in
let left = lhs x f
and right = rhs x f in
R.equal B.equal left right )
;;
let tests ~count =
Applicative.tests ~count
@ [
selective_1 count
; selective_2 count
; selective_3 count
; selective_4 count
; selective_5 count
; selective_6 count
; selective_7 count
]
;;
end
module Suite_rigid
(R : Model.COVARIANT_1)
(F : Preface_specs.SELECTIVE with type 'a t = 'a R.t)
(A : Model.T0)
(B : Model.T0)
(C : Model.T0) =
struct
module Non_rigid = Suite (R) (F) (A) (B) (C)
module Laws = Preface_laws.Selective.For_rigid (F)
let print pp = Format.asprintf "%a" (R.pp pp)
let selective_8 count =
let generator =
Gen.tup2
(R.generator (fun1 A.observable B.generator))
(R.generator A.generator)
in
let print (_, x) = print A.pp x in
Util.test ~count ~print generator Laws.selective_8 (fun lhs rhs (ff, x) ->
let f = F.(Fn.apply <$> ff) in
let left = lhs f x
and right = rhs f x in
R.equal B.equal left right )
;;
let selective_9 count =
let generator =
Gen.tup3 (R.generator A.generator)
(R.generator (Util.gen_either B.generator C.generator))
(R.generator (fun1 B.observable C.generator))
in
let print (x, y, _) =
Print.tup2 (print A.pp) (print (Util.pp_either B.pp C.pp)) (x, y)
in
Util.test ~count ~print generator Laws.selective_9
(fun lhs rhs (x, y, ff) ->
let f = F.(Fn.apply <$> ff) in
let left = lhs x y f
and right = rhs x y f in
R.equal C.equal left right )
;;
let tests ~count =
Non_rigid.tests ~count @ [ selective_8 count; selective_9 count ]
;;
end