Cobertura is an open-source Java code coverage tool that helps teams quickly spot untested code paths and improve release confidence.
What I worked on
- Improved and maintained parts of the coverage/instrumentation workflow
- Helped with reliability and usability for developers running coverage in CI
- Supported overall code quality efforts around test visibility
Technical challenges
Cobertura instruments compiled Java bytecode to track execution counts. That means balancing:
- Accuracy of reporting
- Compile-time overhead from instrumentation
- Runtime performance after instrumentation is applied
This required careful handling of bytecode behavior and edge cases so coverage reporting stayed dependable.