Test harness for equivalence tests SIL versus Normal

Hello dear Matworks community,

I am using the test harness to do equivalence testing of the matlab code I wrote against the auto generated C code. I have been following the following guide “https://www.mathworks.com/help/ecoder/ug/software-and-processor-in-the-loop-sil-and-pil-simulation.html” and I have still a couple of questions:

I have the model “my_fun.slx” that is a Simulink subsystem and I would like to run the equivalence testing to this model. I created the test harness called “my_fun_test_harness” and I want to test normal vs SIL output with the test harness. I did the following simple code:

“

model='my_fun_test_harness';

open_system(model);

set_param('my_fun_test_harness','SimulationMode','Software-in-the-Loop (SIL)')

out = sim(model,20);

“

When I run this, it is automatically created the folder “my_fun_test_harness_grt_rtw” . In that folder, I find C files of the test harness (my_fun_test_harness_grt_rtw) and not of the model I want (my_fun).

However, I would expect to see somewhere “my_fun.c” and not only “my_fun_test_harness.c”, as "my_fun.c" is what shall be use in the software of my machine. Can you help me to understand this?

Thanks!!

Answer 1

[Oliver Jaehrig]

It currently sounds like you created a test harness as a normal model, which would explain the behavior.

With Simulink Test you can use a feature to explicitly create "test harnesses" which do not modify the model itself and can be saved externally or internally of your model.

I recommend to follow this example:

https://www.mathworks.com/help/sltest/ug/create-and-run-a-back-to-back-test.html

which helps to setup a back to back test with Simulink Test and automatically creating a test harness for it.