This example shows how to create a MATLAB-based Simulink test, generate a baseline, and load, run, and view test results in the Test Manager. When you load a MATLAB-based Simulink test case
.m file into the Test Manager, the test case appears and behaves the same as any test case created directly in the Test Manager.
This example using internal test harness
sltestMATLABBasedTestExample_harnrss verifies the
sltestMATLABBasedTestExample model against a generated baseline.
The class definition file,
Baseline.m, has already been created and is provided with this example.
The test case file,
Baseline.m, is derived from
sltest.TestCase, which in turn is derived from
matlab.unittest.TestCase. All of the
matlab.unittest.TestCase methods are also available as a part of
The class definition file,
classdef BaselineTest < sltest.TestCase
methods (Test) function testOne(testCase) testCase.loadSystem('sltestMATLABBasedTestExample'); evalin('base','gain2_var = 2.01;'); simOut = testCase.simulate('sltestMATLABBasedTestExample',... 'WithHarness','sltestMATLAbBasedTestExample_harness'); testCase.verifySignalsMatch(simOut,'baseline1.mat','AbsTol',0.015); end end
The file includes:
A test function named
testOne, which is in a
methods block that has the
testCase.loadSystem method to load the
Changes the value of the
gain2_var in the model to 2.01.
testCase.simulate method to simulate the model with the harness.
testCase.verifySignalsMatch method to compare the output of
simOut, to the baseline data MAT-file named
baselineOne.mat. It also sets an absolute tolerance. If you remove the tolerance setting from the file before running the test, the test fails because the value of
gain2_var was changed from its original value in the model.
The baseline data file,
baselineOne.mat, has already been generated and is provided with this example. The baseline data file was created using this process:
2. After the baseline test runs, a Simulation Data Inspection report shows the output from the signals. View the Actual Results in the report and approve the baseline data. The data is saved in a MAT-file, which for this example is named
1. Open the Test Manager.
2. In the Test Manager, click Open and select Open MATLAB-based Simulink Test (.m).
3. In the Open File dialog box, select
The Test Manager populates the Test Browser with testOne from the
1. Click Run to execute the test.
2. After the test completes, expand all rows in the Results and Artifacts pane. Notice that
3. To view the data comparison, select Out2:1 under testOne > Simulation Output Comparison Results. The simulation and baseline signals match within the specified tolerance.