use of runTestsWithCLIArgs differs between Expecto and Expecto.Flip

[sporring]

Hi, I'm considering using Expecto to teach 1st year computer scientists how to perform tests. I noticed that runTestsWithCLIArgs behaves differently in Expecto and Expecto.Flip. Using a variant of the demo example in README.md, in interactive mode the following works:

open Expecto

let simpleTest =
  testCase "A simple test" <| fun () ->
    Expect.equal 4 (2+2) "2+2 = 4"

runTestsWithCLIArgs [] [||] simpleTest

but it doesn't when using Expecto.Flip, in which case the tests must be gathered as test:

open Expecto
open Expecto.Flip
let simpleTest =                    
    (2+2)|>Expect.equal "2+2 = 4" 4

test "" {simpleTest} |> runTestsWithCLIArgs [] [||]

Is there a deeper rationale behind this difference? Thanks, Jon

[farlee2121]

I'm not sure what error you're running into. The behavior seems the same to me.

This works

open Expecto
open Expecto.Flip
let simpleTest =
  testCase "A simple test" <| fun () ->                    
    (2+2) |>Expect.equal "2+2 = 4" 4

simpleTest |> runTestsWithCLIArgs [] [||]

Only Expect methods have flip variants, and all they do is accept parameters in reverse order then forward them to the non-flipped version.

Perhaps you accidently removed the testCase "A simple test" <| fun () -> line when you tried rewriting for Expecto.Flip?

Edit: I ran these samples using interactive notebooks