Testing: Jacoco Reports
How to interpret the reports (red, yellow, green)
How to read the test coverage reports
- If any line of code is red, that means it is not tested at all—it is being missed by line coverage
- If a line of code is yellow, it means there are multiple ways to execute the line.
- it may have an if/else, or a boolean expression involving
&&or||, and thus there are multiple paths through the code (multiple branches). - Yellow means it is being missed by branch coverage; some branches are covered, and others are not.
- Think about the multiple paths through the code and be sure your tests are coverage all of them.
- it may have an if/else, or a boolean expression involving
For more on line vs. branch coverage, see: https://ucsb-cs56-pconrad.github.io/topics/testing/
Related topics:
- Testing: Acceptance Testing—Criteria for being 'done' with an issue
- Testing: Agile Testing (Crispin and Gregory)—Material from the book by Lisa Crispin and Janet Gregory, Agile Testing: A Practical Guide for Testers and Agile Teams
- Testing: Automation—How to make testing an automatic part of your process
- Testing: End to End Testing—Intro to End to End Testing, and Framework Specific Examples
- Testing: Jacoco Reports—How to interpret the reports (red, yellow, green)
- Testing: Jacoco via Maven—Setting up Jacoco test coverage, using Maven
- Testing: Unit Testing with Jest—Setting up Jest for Next.JS projects
- Testing: Mocking—Intro to Mocking in Tests, and Framework-specific Examples