Test Coverage
Test coverage is a software testing metric that measures the percentage of code executed by automated tests, such as unit, integration, or end-to-end tests. It helps developers identify untested parts of a codebase to ensure comprehensive testing and reduce the risk of bugs. Common types include statement coverage, branch coverage, and path coverage, each focusing on different aspects of code execution.
Developers should learn and use test coverage to improve code quality, catch regressions early, and maintain robust software, especially in agile or continuous integration environments. It is crucial for projects with high reliability requirements, such as financial systems or healthcare applications, where undetected bugs can have severe consequences. By tracking coverage, teams can prioritize testing efforts and ensure critical code paths are validated.