What is Test Coverage?

Test coverage is a metric in software testing to measure the testing effectiveness by determining how much of the source code a program executes.

It indicates which parts of the code have been tested or not. The primary aim is to ensure all code sections are covered by the test cases.

Test coverage is shown as a percentage and helps pinpoint areas needing more testing, enhancing software quality, and spotting potential risks.

The higher the test coverage, the lower the risk of unnoticed defects in the software.

For example, companies use test coverage to monitor testing progress, find gaps in testing, and prioritize testing based on critical code sections.

Benefits of solid test coverage include increased confidence in software quality, reduced defects in production, and easier code maintenance.