MATLAB: Is it possible to exclude blocks for coverage analysis from Simulink Test Manager in R2017b

blockscoverageexcludemanagersimulink testtest

I am wondering whether there is a way to exclude blocks for coverage analysis from the Test Manager.

Even if I right-click on a block in the model and exclude it from coverage analysis, when I run a test in the Test Manager and generate the coverage report, the block has not been actually excluded.

Best Answer

It is possible to do so by first saving your filter to a file, and then setting the filter (CovFilter) in the model.

Please refer to the following steps:

1. Open Simulink model:

>> slvnvdemo_covfilt

2. Right click on 'Normal config (feedthrough)' > Coverage > Exclude subsystem with all descendants

3. For Rationale, type 'myRationale', then Apply

4. From the Filter Viewer, click on Save Filter and save as 'myFilter.cvf'

5. In Configuration Parameters, navigate to Coverage > Advanced Parameters > Coverage filter filename, and specify name of the filer ('myFilter' in this case)

This can also be done programmatically as follows:

>> set_param(gcs,'CovFilter','myFilter')

6. From the model, click on Analysis > Test manager

7. New > Test File, and save as 'myTest.mldatx'

8. For System under test, select 'use current model'

9. In the Test File 'myTest', navigate to Coverage settings and select 'Record coverage for system under test'

10. Run test

Now, go to the Results and Artifacts section, navigate to Aggregated Coverage Results to generate report, and verify that SubSystem block "Normal config (feedthrough)" has been excluded from coverage analysis.

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MATLAB: Simulink Test: update constant block in iteration

The idea is to make use of the "Parameter Overrides" section of the "Real time normal shift chain" in the Simulink Test Manager.

Please follow the steps below:

Select the test "Real time normal shift chain"
Open "Parameter Overrides" section
Click "Refresh" at the bottom of the table. This will actually build the real-time application and retrieve all the available parameters in the model
Note down the name of the parameter set / workspace variable that corresponds to the model element 'MainTestModel/SpeedBlock'. It is likely named 'Speed' based on what I see of your model.
Now you may override this value as follows:

>> setVariable(testItr, 'Name', 'Speed', 'Value', num2str(k));

in your test iterations.

Note that the "Source" argument is not needed here as the 'Speed' variable is already associated with the model element 'MainTestModel/SpeedBlock'.

MATLAB: Programmatically Add Coverage Filter for MATLAB function inside MATLAB Function Block

You can programmatically add a filter for a MATLAB function by creating a selector with the following command:

>> selector = slcoverage.BlockSelector(slcoverage.BlockSelectorType.BlockInstance, <matlab function name here>);

You can then use this selector to create a filter rule as follows:

>> filter = slcoverage.Filter;
>> filterRule = slcoverage.FilterRule(selector, 'Exclude from coverage', slcoverage.FilterMode.Exclude);
>> filt.addRule(rule);

Please also note that you can get all selectors associated with a MATLAB function by executing the following command after simulating the model for coverage:

>> selectors = slcoverage.Selector.allSelectors(<matlab function name here>);

More information on this command can be found here:

https://www.mathworks.com/help/slcoverage/ref/slcoverage.selector-class.html

Best Answer

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MATLAB: Simulink Test: update constant block in iteration

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