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如何基于属性测试采用函数列表的函数?

采取以下功能:

let handleAll handlers item =
    handlers |> List.collect(fun handler -> handler item)

附加上下文如下:

let handleAll handlers item =
    handlers |> List.collect(fun handler -> handler item)

let handlers = [
    handleShipping
    handleRoyalty
    handleCommission
    handleVideo
    handleEmail]

(*Client*)
let result = (handlers , Book) ||> handleAll

我尝试了以下测试,然后意识到我的预定义函数都没有被使用(显然),因为在运行时生成了任意函数​​:

例子:

   [handleShipping
    handleRoyalty
    handleCommission
    handleVideo
    handleEmail]

我的属性测试如下:

(*Property Tests*)
open FsCheck
open FsCheck.Xunit

[<Property(MaxTest = 1000, QuietOnSuccess = true)>]
let ``handleAll always returns elements for at least (1) handler`` () =

    (Arb.generate<(Item -> Command list) list> 
    |> Gen.filter(List.isEmpty >> not) , Arb.generate<Item>)
    ||>Gen.map2(fun handlers item -> handlers , item)
    |> Arb.fromGen
    |> Prop.forAll 
    <| fun (handlers , item) ->
     (handlers , item) 
     ||> handleAll
     |> List.isEmpty |> not

handleAll函数是基于属性的可测试的吗?

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