Increase automated test coverage

Automated test coverage of the plugin is low.
Improve the automated test coverage by submitting one or more pull requests with new automated tests.

Review current coverage

Review the detailed test coverage with the commands:

Linux

$ mvn -P enable-jacoco clean install jacoco:report
$ xdg-open target/site/jacoco/index.html

Windows

C:\Users\Yourname > mvn -P enable-jacoco clean install jacoco:report
C:\Users\Yourname > start target\site\jacoco\index.html

Create a new test for a class that is not well covered

Most integrated development environments have tools that will create a test stub that is a good beginning.

• Apache Netbeans has "Create / Update tests"
• JetBrains IntelliJ has "Create tests"
• Visual Studio Code has the "Extension Pack for Java".

Use the IDE or your own coding to create a test for one of the classes that is not well covered by tests.

Keep the test small so that the pull request is easy to review.