Code Coverage is a metric that measures the amount of code executed during testing, expressed as a percentage. It helps identify untested parts of the codebase, ensuring more thorough test coverage and improving software quality. Key points:
Types:
- Statement coverage
- Branch coverage
- Function coverage
Calculation:
- (Executed code / Total code) * 100
Tools:
- JaCoCo
- Istanbul
- gcov
Benefits:
- Identifies untested code
- Guides test case creation
Limitations:
- High coverage doesn’t guarantee quality
- This may lead to inefficient testing
Code Coverage helps assess the thoroughness of testing efforts.