Re: unit tests best practice

[Amirouche Boubekki]

Insightful post for those interested in autotool-fu.

By the way, I have a demo repo with how to setup coverage, if you are
interested ?

Le jeu. 3 janv. 2019 17:54, Catonano <address@hidden> a écrit :

> Wat's the best practice to instrument a Guile based project for running
> unit tests ?
>
> guile-git has this fragment in the Makefile.am file
>
> SCM_LOG_DRIVER =                                \
>   $(top_builddir)/pre-inst-env                  \
>   $(GUILE) --no-auto-compile -e main            \
>       $(top_srcdir)/build-aux/test-driver.scm
>
> as you can see, what Automake produces calls a "main" procedure in a
> "test-driver.scm" script in the "build-aux" folder
>
> The effect is that you can call
>
> make check
>
> in the root folder and have the tests run
>
> Instead, in the Makefile.am file produced by guile-hall wired projects you
> ave this fragment
>
> AM_TESTS_ENVIRONMENT = abs_top_srcdir=\"$(abs_top_srcdir)\"
> SCM_LOG_COMPILER = $(top_builddir)/test-env $(GUILE)
> AM_SCM_LOG_FLAGS = --no-auto-compile -L \"$(top_srcdir)\"
>
> so there's a SCM_LOG_COMPILER instead of a SCM_LOG_DRIVER
>
> What is this LOG_COMPILER doing, exactly ?
>
> This is what the test-env file contains
>
> #!/bin/sh
>
> \"@abs_top_builddir@/pre-inst-env\" \"address@hidden"
>
> exit $?
>
> what is this ?
>
> What does this do ?
>
> Alex admits he goes full cargo culting when dealing with the Autotools, in
> fact there's this comment line at the beginning of the section producing
> the Autotools related files in guile-hall
>
> ;;;; Full on cargo cult!
>
> So, if there's any kind soul here willing to clarify/illustrate what is
> going on we could make the effort to condensate such knowledge in
> guile-hall
>
> Improving the experience in dealing with Guile based project would be a
> great progress
>
> One last thing
>
> test-driver uses the API provided by srfi-64 to actually run the tests and
> display the results
>
> Does Guile provide a standard version of such script ?
> Should Guile provide one ?
>