Viewing Coverage Results in a Model

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Overview of Model Coverage Highlighting Enabling Coverage Highlighting Examples: Model Coverage Coloring Coverage Display Window

Overview of Model Coverage Highlighting

When you simulate a Simulink model, you can configure your model to provide visual results that allow you to see at a glance which objects recorded 100% coverage. After the simulation:

• In the model window, model objects are highlighted in certain colors according to what coverage was recorded:

  • Light green indicates that an object received full coverage during testing.

  • Light red indicates that an object received incomplete coverage.

  • Gray indicates that an object was filtered from coverage.

  • Objects with no color highlighting received no coverage.

• When you click a colored object, the Coverage Display Window provides details about the coverage recorded for that block. For subsystems and Stateflow charts, the Coverage Display Window lists the summary coverage for all objects in that subsystem or chart. For other blocks, the Coverage Display Window list specific details about the objects that did not receive 100% coverage.

The simulation highlights blocks that received the following types of model coverage:

• Decision Coverage (DC)

• Condition Coverage (CC)

• Modified Condition/Decision Coverage (MCDC)

• Simulink Design Verifier Coverage

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Enabling Coverage Highlighting

To enable the model coverage colored diagram display:

1. In the Simulink window, from the Tools menu, select Coverage Settings.

2. In the Coverage tab, select Coverage for this model.

3. Select the Results tab.

4. Select Display coverage results using model coloring. This is the default setting.

After you have enabled the coverage coloring, simulate your model. In the model, you can see at a glance which objects received full, partial, or no coverage.

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Examples: Model Coverage Coloring

The following sections show examples of model objects that

Green: Full Coverage

In this example, the Switch block received 100% coverage, as indicated by the green highlighting and the information in the Coverage Display Window.

Red: Partial Coverage

In this example, the control_logic Stateflow chart received the following coverage:

• Decision: 25%

• Condition: 21%

• MCDC: 0%

Inside the control_logic subsystem, the Pressure substate was never fail.

In the next example, in the Multiport Switch block, the second and third data ports were never executed.

Gray: Filtered Coverage

In this example, the fuel_rate_control subsystem is highlighted in gray because it was filtered out of coverage recording.

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Coverage Display Window

After simulating the model and recording coverage, by default, the Coverage Display Window is the top-most visible window. When you click an object that recorded coverage, the Coverage Display Window displays details of the coverage recorded during simulation.

In the Coverage Display Window, you can:

• Configure the window so it is not always the top-most visible window. Next to Always on top, click and removing the check.

• Configure the window to display coverage information when you click an object that recorded coverage. Click and select Click.

• Configure the window to display coverage information when you hover your cursor on an object that recorded coverage. Click and select Focus.

• Close the window. Press Alt+F4.

• Close the window and remove all highlighting on the model. Select View > Remove highlighting.

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Creating and Running Test Cases

Model Coverage for Multiple Instances of a Referenced Model

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