Unity Test Framework - Adding multiple test files

[Cody]

Hello,

I am trying to integrate the Unity test framework into our project and running into issues with how to add additional test files.
Nordic provides one example project in the nRF Connect SDK repository here: https://github.com/nrfconnect/sdk-nrf/tree/master/tests/unity/example_test.

This sample was helpful but the moment I attempt to add another source file, "example_test_2.c" for example, the generation of the test binary fails.
It seems that I can only generate one test runner per CMake project with the CMake directive: "test_runner_generate(src/example_test.c)". 

Can Nordic provide any help or direction here?

[Amanda Hsieh]

Hi Cody, 

It seems like unity framework limitation: https://github.com/ThrowTheSwitch/Unity/blob/b0032caca4402da692548f2ee296d3b1b1251ca0/auto/generate_test_runner.rb#L484

The script accepts only one file. You should create a test case sample, similar to example_Test, and have there one file with tests. 

-Amanda H.

[Cody]

Have one file with all the tests? What if I have hundreds of tests for my project, that file is going to be huge.

[Amanda Hsieh]

Hi Cody,

In general, you have one file per module, so multiple test binaries for the project.

-Amanda H.

[Cody]

Okay, my project does have multiple modules that I have separated out. Just to clarify, when you mention "module" you are speaking to a grouping of source files referenced in a CMakeLists.txt? For example, in the asset_track sample application, gps_controller and env_sensors would be considered "modules"?

I will try implementing it in this way and get back to you.

[Amanda Hsieh]

Hi Cody, 

Yes, in theory, you can create two tests for the same module.

-Amanda H.