How do I get the harness UUID in Simulink Test

When I merge with git, the UUID of my harness gets out of sync with the XML file. How do I get the current UUID of the test harness without needing to reimport my harness?

Answer 1

[Amish]

Hi Taylor,

As I can understand, you need to find a way to get the current UUID of your test harness without reimporting it.

In Simulink, the Universally Unique Identifier (UUID) of a test harness is typically generated when the test harness is created. If the UUID of your test harness gets out of sync with the XML file, you can retrieve the current UUID of the test harness without needing to reimport it by using the Simulink API and MATLAB scripting.

The general way to do this is as follows:

• Open MATLAB and load your model.
• Access the test harness object within your model. You can do this by specifying the path to the test harness.
• Now, you can retrieve its UUID using the get_param function

Here is a sample code for your help:

% Load the Simulink model 

load_system('YourModelName'); 

% Access the test harness 

harnessPath = 'YourModelName/MyTestHarness'; 

harnessObj = Simulink.Harness.getHarness(harnessPath); 

% Retrieve the UUID 

harnessUUID = get_param(harnessObj, 'UUID'); 

% Display or use the UUID 

disp(['UUID of the test harness: ' harnessUUID]); 

For more details, you can refer to the documentation : Create or Import Test Harnesses and Select Properties - MATLAB & Simulink - MathWorks India

Thank you,

Amish

[Taylor]

Simulink.Harness.getHarness doesn't seem to exist. I'm aware the UUID is defined in the XML file, but during certain merges, the UUID gets out of sync with the XML and breaks the test case without reimporting it.

There must be a way to simply get the UUID and repair the broken harness.

[Gregg Smith]

Hi,

I'm not familiar the API given above. I believe the customer should instead use:

% HarnessName - name of the loaded/opened harness block diagram

harnessUUID = get_param(HarnessName, 'HarnessUUID')

If the harness is not opened or loaded, you can access the harness UUID for a give harness name as follows:

% SysName - name of the loaded/opened system block diagram

hInfo = Simulink.harness.find(SysName, 'Name', HarnessName)

There should be a field hInfo.uuid

Thanks

Gregg Smith

Simulink Test Dev