bug#72367: srfi-64: nested group not counted as one test

On 30.07.2024 21:51, Tomas Volf wrote:
> Hello,
>
> I think I found a bug in (srfi srfi-64) module shipped with GNU Guile.
>
> The specification says the following about the count argument to the test-begin
> form:
>
>> The optional count must match the number of test-cases executed by this
>> group. (Nested test groups count as a single test case for this count.)
> Thus I believe that following should *not* call on-bad-count-function.
>
>     (use-modules (srfi srfi-64))
>     (let ((r (test-runner-null)))
>       (test-runner-current r)
>       (test-runner-on-bad-count! r (λ (runner actual-count expected-count)
>                                      (pk (test-runner-group-stack runner))
>                                      (pk actual-count expected-count)))
>       (test-begin "x" 1)
>       (test-begin "y" 3)
>       (test-assert #t)
>       (test-assert #t)
>       (test-assert #t)
>       (test-end)
>       (test-end))
>
> However as we can see it does:
>
>     ;;; (("x"))
>
>     ;;; (3 1)
>
> Have a nice day
> Tomas Volf

Looks like a bug indeed. I believe I was able to fix it in my implementation with this commit:

    https://codeberg.org/taylan/scheme-srfis/commit/c49e367fbf292c6ee66ff435c7daa1f4ae5a47fa

An equivalent fix could be applied to the upstream reference implementation / current Guile implementation.

- Taylan