How can I combine multiple single run coverage results into a single, cumulative coverage result?

I have run a series of tests on my model file while collecting individual coverage results for each test. I my coverage forlder for my model i now have a large number of .cvt coverage data files that I would like to combine into a single coverage report & data file. How can I combine these results into a single file with all of my coverage data?

Answer 1

[MathWorks Support Team]

There are two methods that you can use to combine coverage data: the first being done at the command line and the seconds through the coverage Results Explorer UI

To combine coverage data at the command line, you can use the '+' operator to get the union of the cvdata objects:

https://www.mathworks.com/help/releases/R2019a/slcoverage/examples/operations-on-coverage-data.html

Alternatively, you can use the coverage Results Explorer to load all of your coverage results for the model from the folder in your screenshot, and combine all of the results into a single cumulative coverage that can be saved:

https://www.mathworks.com/help/releases/R2019a/slcoverage/ug/access-manage-and-accumulate-model-coverage-results.html#bvf4tly-7

You can also indicate the need for cumulative coverage collection prior to simulation using the Configuration option under Coverage > Results > Advanced Parameters

https://www.mathworks.com/help/releases/R2019a/slcoverage/ug/cumulative-coverage-data.html

Answer 2

[Kurt Stewart]

For running unit tests you can combine different test classes into one suite and run them together

suite = testsuite({'UnitTestClass1.m','UnitTestClass2.m'});
runner = TestRunner.withNoPlugins;
runner.addPlugin(CodeCoveragePlugin.forFolder(pwd, ...
   'Producing',CoverageReport('TotalCoverage', ...
   'MainFile','UnitTests.html')))
runner.run(suite)
pause(1)
web('TotalCoverage/UnitTests.html') %view the results

https://www.mathworks.com/help/matlab/ref/matlab.unittest.plugins.codecoverageplugin-class.html