xBehave Quickstart sample with custom operator

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open Xbehave
open Xunit

let (-->) (s:string) f = s.f(System.Action< >(f)) |> ignore

type Calculator () = member __.Add(x,y) = x + y

let [<Scenario>] addition(x:int,y:int,calculator:Calculator,answer:int) =
    let x,y,calculator,answer = ref x, ref y, ref calculator, ref answer    
    "Given the number 1" --> fun () -> x := 1
    "And the number 2" --> fun () -> y := 2
    "And a calculator" --> fun () -> calculator := Calculator()
    "When I add the numbers together" --> fun () -> answer := (!calculator).Add(!x, !y)
    "Then the answer is 3" --> fun () -> Assert.Equal(3, !answer)

val s : string

Multiple items
val string : value:'T -> string

Full name: Microsoft.FSharp.Core.Operators.string

--------------------
type string = System.String

Full name: Microsoft.FSharp.Core.string

val f : 'a

namespace System

Multiple items
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11,'T12,'T13,'T14,'T15,'T16> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 * 'T12 * 'T13 * 'T14 * 'T15 * 'T16 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11,'T12,'T13,'T14,'T15> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 * 'T12 * 'T13 * 'T14 * 'T15 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11,'T12,'T13,'T14> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 * 'T12 * 'T13 * 'T14 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11,'T12,'T13> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 * 'T12 * 'T13 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11,'T12> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 * 'T12 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10,'T11> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 * 'T11 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9,'T10> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 * 'T10 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8,'T9> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 * 'T9 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7,'T8> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 -> unit

Full name: System.Action<_,_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6,'T7> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 -> unit

Full name: System.Action<_,_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5,'T6> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 -> unit

Full name: System.Action<_,_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4,'T5> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 -> unit

Full name: System.Action<_,_,_,_,_>

--------------------
type Action<'T1,'T2,'T3,'T4> =
  delegate of 'T1 * 'T2 * 'T3 * 'T4 -> unit

Full name: System.Action<_,_,_,_>

--------------------
type Action<'T1,'T2,'T3> =
  delegate of 'T1 * 'T2 * 'T3 -> unit

Full name: System.Action<_,_,_>

--------------------
type Action<'T1,'T2> =
  delegate of 'T1 * 'T2 -> unit

Full name: System.Action<_,_>

--------------------
type Action =
  delegate of unit -> unit

Full name: System.Action

--------------------
type Action<'T> =
  delegate of 'T -> unit

Full name: System.Action<_>

val ignore : value:'T -> unit

Full name: Microsoft.FSharp.Core.Operators.ignore

Multiple items
type Calculator =
  new : unit -> Calculator
  member Add : x:int * y:int -> int

Full name: Script.Calculator

--------------------
new : unit -> Calculator

member Calculator.Add : x:int * y:int -> int

Full name: Script.Calculator.Add

val x : int

val y : int

val addition : x:int * y:int * calculator:Calculator * answer:int -> unit

Full name: Script.addition

Multiple items
val int : value:'T -> int (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.int

--------------------
type int = int32

Full name: Microsoft.FSharp.Core.int

--------------------
type int<'Measure> = int

Full name: Microsoft.FSharp.Core.int<_>

val calculator : Calculator

val answer : int

val x : int ref

val y : int ref

val calculator : Calculator ref

val answer : int ref

Multiple items
val ref : value:'T -> 'T ref

Full name: Microsoft.FSharp.Core.Operators.ref

--------------------
type 'T ref = Ref<'T>

Full name: Microsoft.FSharp.Core.ref<_>