FAQs pertaining to JUnit 5 – JaCoCo Code Coverage
1. What is displayed in a JaCoCo coverage report?
It draws attention to
- Total percentage of code coverage
- coverage of certain classes and techniques
- Code lines that are run during testing (green) or not (red)
2. What should be the ideal percentage of code coverage?
It is dependent upon the risk considerations and complexity of the project. In general, strive for:
- 70–80% for the majority of projects
- 80–90% for important or dangerous parts
- 100% in certain situations where risk is intolerable
3. What are the advantages of code coverage with JaCoCo?
Advantages of code coverage with JaCoCo
- Provides comprehensive HTML reports for simple examination
- easily combines with Maven and additional build tools
- supports different metrics for coverage (line, branch, method)
- Suitable for quality control and ongoing integration
JUnit 5 – JaCoCo Code Coverage
In simple terms, code coverage means measuring the percentage of lines of code that are executed during automated tests. For example, if you have a method containing 100 lines of code and you are writing a test case for it, code coverage tells you briefly how many of those lines were actively exercised by the test.