Class Diagram Viewer

Open the Class Diagram Viewer. In the Class Browser pane, expand the add icon and select Add Package. Enter matlab.unittest as the package name and click OK. The folder for unittest appears in the Class Browser.

Expand the unittest folder and select the InteractiveTestCase class. To do this, click the Add button in the toolbar to add a card for the class to the Class Diagram Viewer canvas. Add the TestCase class using the same method, and click Auto Arrange. Because TestCase is the superclass of InteractiveTestCase, Class Diagram Viewer automatically draws an arrow from InteractiveTestCase to TestCase to show this relationship.

The striped blue borders at the top of the class cards indicate that both of these classes are handle classes. The Legend pane describes what the graphic effects and icons on the canvas represent.

You can also drag and drop items from the Class Browser directly to the canvas. Drag and drop the Test class to the viewer. The button indicates that Test has a viewable superclass.

Click the button to add the superclass to the diagram. The arrow pointing to TestSuite from Test indicates that TestSuite is a superclass of Test.

In addition to moving the classes in the viewer by dragging and dropping, you can customize the view using the options in the Navigate section of the toolbar, including:

In the Diagram section, select the Mixins check box. This action does not automatically add mixin classes to the diagram, but it includes them in the display when you perform any action that adds superclasses.

To add the immediate superclass of Test, right-click the Test class card and select Superclass. Click Auto Arrange to clean up the diagram. The CustomDisplay mixin now appears as a superclass of Test. The name of CustomDisplay is italicized, indicating that it is an abstract class.

In addition to relationships between classes, you can also explore the class definitions themselves. Expand the Test class card by clicking the arrow next to the class name in its card. The class card expands to show the properties and methods defined by the class. Properties and methods inherited from superclasses do not appear in the subclass cards.

The icons next to the property and method names also identify the access levels of the properties and methods. For example, the lock icon shows that TestCaseProvider is a private property.

Selecting a property or method on the class card also brings up access and other information in the Inspector pane.

To view the source code of one or more classes, select their cards and click Go To Source in the toolbar. The source code files open in the MATLAB editor.

To save or share the diagram you create, use one of two options: