Enabling code coverage

Enable code coverage to detect lines and methods that have not been exercised in your Java™ or plugin project.

About this task

You can enable code coverage on any Java project in your workspace. In the Package Explorer view, projects that are enabled for code coverage have the following decorator: Code Coverage Enabled decoration.

Procedure

Enable code coverage from either the Properties page or the Run menu:
- On the properties page:
  1. Right-click the name of the project that you want to enable for code coverage, and select Properties (or select Project > Properties.
  2. Click the Code Coverage property, select the Enable code coverage check box, and optionally select the Save Source check box. Click Apply.
- From the Run menu in the Code Coverage Enablement dialog box:
  1. Click Run > Code Coverage > Preferences. Select either All projects or Only the selected projects (and select the projects that you want enabled for code coverage), and then click OK.
    Note: With the Save Source option, Code Coverage launch would capture the current source code of the projects and save them along with code coverage data. When opening Java source from the code coverage reports on a selected launch, if the launch was run with the Save Source option enabled, the editor will show the associated source that had been saved at the time of the launched in read only mode. If the Save Source option was not enabled at the time of the launch, the Java source in the workbench will be opened in edit mode. However, the source that is open might not match with the source that was used to calculate code coverage if changes to the source file happened after the launch. In addition, you should enable the Save Source option if you are planning to export the resulting code coverage as an archive so that the matching version of source is saved with the code coverage data.
Set code coverage levels and any filters.

What to do next

Important: If you are working with a remote instance of WebSphere® Application Server and the server is running, then you must restart the server to enable it to collect code coverage statistics.

After you enable code coverage on your project, coverage statistics will be generated the next time that it is launched. Note that statistics are not automatically generated for all types of launch configurations.

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