Changes

After adding the test cases to the extension, the participant can install the extension by drag and drop the extension into Firefox, and they could see the following screen in Firefox.

Select the Unit Testing, system will pop up the test window as following.

Notice: The framework runs the setUp() first, which we can see the highlighting in the screen shot.

Notice: The framework runs the tearDown() when all the test cases are finished, which we can see the highlighting in the screen shot.

Unfortunately, the test windows cannot be displayed, because it hasn't been developed.