Test condition function for Stateflow charts and MATLAB Function blocks
sldv.condition( specifies that
expr is true for every time step in a generated test case.
Use any valid Boolean expression for
This function has no output and
no impact on its parenting function, other than
any indirect side effects of evaluating
expr. If you issue this function from the MATLAB® command line, the function has no
sldv.condition test conditions within MATLAB code or separate the conditions into a verification script.
The Test conditions option in the Test
generation pane applies to test conditions represented with the
sldv.condition function and with the Test Condition
Add Test Objective and Test Conditions
Add a test objective and test conditions by using the MATLAB Function block.
sldvdemo_cruise_control model and save it as
Remove the Test Condition block for the
speed block signal. Instead of the Test
Condition block, this example uses
From the User-Defined Functions library, add a MATLAB Function block:
Name the block
Open the block and add this code:
function define_tests(speed, target) %#codegen sldv.condition(speed >= 0 && speed <= 100); sldv.test(speed > 60 && target > 40 && target < 50); sldv.test(speed < 20 && target > 50);
Save the model and return to the top model.
Connect the block to the signals for the
speedblock and for the
Save the changes to the
To generate test cases, on the Design Verifier tab, click Generate Tests.
expr — Expression for condition
Expression for the condition, specified as a Boolean expression. For
x > 0.
Instead of using the
sldv.condition function, you can insert a
Test Condition block in your model. To learn
about the differences between Test Condition blocks and
sldv.condition, see What Is Test Case Generation?.
You can also specify test conditions by using MATLAB for code generation without using the
sldv.condition instead of directly using MATLAB for code generation eliminates the need to:
Express the constraints with Simulink® blocks.
Explicitly connect the condition output to a Simulink block.
Introduced in R2009b