Test Generation on Model with C Caller Block

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This example shows how to use test generation on a model with a C Caller block and custom C code

Open the model containing the C Caller block and custom code

open_system('sldvexCCallerBlock');

Generate tests to ensure coverage of the model

Use the sldvrun function to run Simulink ® Design Verifier ™ analysis.

opts = sldvoptions;
opts.Mode = 'TestGeneration';
opts.ModelCoverageObjectives = 'ConditionDecision';
opts.SaveHarnessModel = 'off';
opts.SaveReport = 'off';

[status, fileNames] = sldvrun('sldvexCCallerBlock', opts);

12-Aug-2025 18:17:11
Checking compatibility for test generation: model 'sldvexCCallerBlock'
Compiling model...done
Building model representation...done

12-Aug-2025 18:17:33

'sldvexCCallerBlock' is compatible for test generation with Simulink Design Verifier.

Generating tests using model representation from 12-Aug-2025 18:17:33...

..........
12-Aug-2025 18:17:46

Completed normally.

Generating output files:

12-Aug-2025 18:17:47
Results generation completed.

    Data file:
    /tmp/Bdoc25b_2988451_683368/tpfb6fc956/sldv-ex07804984/sldv_output/sldvexCCallerBlock/sldvexCCallerBlock_sldvdata.mat

Verify the coverage

Use the sldvruntest function to verify that the test suite achieves complete model coverage.

[~, finalCov] = sldvruntest('sldvexCCallerBlock', fileNames.DataFile, [], true);
cvhtml('Final Coverage', finalCov);

Clean Up

To complete the example, close all models.

close_system('sldvexCCallerBlock', 0);