Re: [PATCH] Unit-test for Please add support for dlangs packagemanager to ob-C.el

[tbanelwebmin]

    For unit-testing Dlang, we could mock the
      «dub» command (compiler+packager). For instance, we could replace
      it by the «cat» Linux command, just while running the unit-test.
      
      But the «cat» command introduces a new dependency on Linux. Is
      there a portable equivalent for «cat»?

On 10/2/22 09:29, Ihor Radchenko wrote:

> Max Nikulin <manikulin@gmail.com> writes:
>
> > I am unsure concerning general policy related to org-babel test, so the 
> > following is rather discussion than a direct request to change the test.
> >
> > Is there a way to avoid dependency on remote resources? My concern is 
> > test results affected by network issues. In addition, more required 3rd 
> > party tools means less probability that a developer after modification 
> > of generic babel code noticed that the changes break D backend because 
> > missing tool on the development machine. I have no idea how much efforts 
> > is required to create a mock for isolated environment.
> >       
> Tests must not rely on remote resources.
> However, it does not mean that we cannot test remote resources in Org
> tests. One simply needs to mock the url-retrieve or whatever function is
> used to retrieve remove resource.
>
> > Another point is that missed dub binary is not reflected in test report. 
> > If `skip-unless' feature of ert is available in Emacs-26 then it should 
> > be used.
> >       
> The current approach to optional binaries is throwing
> 'missing-test-dependency error when the binary is not available.
>
>