Make module tests use common prj.conf configuration

RE: Make module tests use common prj.conf configuration

Øivind — Wed, 26 Apr 2023 11:50:55 GMT

How are your modules and tests built up? Do they each contain a CMakeLists.txt and a prj.conf? If they do, then something like what I described should work.

Could you show me how the file structure looks, and how you switch from one test to another? I could make this ticket private first if you'd like.

RE: Make module tests use common prj.conf configuration

douglas.malnati — Tue, 18 Apr 2023 13:27:30 GMT

Hi Oivind,

I see. Can that work with multiple modules, though?

As in, today, I have a single module that I want to be able to add to a project, and have its prj.conf values automatically set.

Tomorrow, I have a second module I want to be able to do the same with.

Etc.

I know, for example, that building against a specific board allows that board definition to have a prj.conf configuration independent of the build.

That's basically what I'm looking for, per-module.

Does that make sense? Can you say how I can do that?

I wonder if snippits could be used for this somehow? Like, instead of including a specific module in my project, instead I include a snippit, and that snippit includes the module as well as the prj.conf values?

I think snippits are only in the latest zephyr, which is beyond the version supported by NCS? Do you know when snippits will be supported?

Thanks.

Doug

RE: Make module tests use common prj.conf configuration

Øivind — Thu, 13 Apr 2023 14:23:54 GMT

Hi,

It sounds like what you are trying to achieve can be done using the variables CONF_FILE and OVERLAY_CONFIG.
Create a test_common.conf file which contains all the common configs, then create one additional testX.conf file for each test with its specific configs.
test1.conf, test2.conf etc.

For each test:
Set the CONF_FILE variable to test_common.conf
Set the OVERLAY_CONFIG variable to testX.conf

This can be done in the test's CMakeLists.txt file, on the line after cmake_minimum_required() :

cmake_minimum_required(VERSION 3.20.0)

set(CONF_FILE ../test_common.conf)
set(OVERLAY_CONFIG test1.conf)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

Of course, set the names and paths of the files however you like.