Using Emma for Command-Line Code Coverage Analysis

Emma Code Coverage Check (Command Line Method)

To conduct a code coverage check using Emma through the command line, follow these steps:

1. Install Emma: Download and set up Emma on your local machine. Verify the installation by running the command emma -version.

2. Prepare Your Project: Make sure all source files and test classes are compiled. Ensure your project's build path includes all necessary dependencies.

3. Execute Coverage: Run Emma’s instrumented classes to collect coverage data:

4. Use the command emma instr -m overwrite -cp [classpath] -d [output directory]

5. Replace [classpath] with your project’s classes and [output directory] with the desired location for generated coverage data.

6. Generate Reports: After the tests, run emma report -r html,txt -in coverage.ec -in coverage.em to generate the coverage report in HTML and text format for easy analysis.

Tips:

- Use -r xml to obtain XML reports compatible with CI/CD tools.

- Review the output reports to identify areas needing more tests.

By following these steps, you’ll obtain valuable insights into your project’s code coverage using Emma’s efficient command-line operations.