What Is Code Coverage in Software Development?

Code coverage in software development is a quantitative metric that is used to measures how much of your source code is executed during tests. This, in turn, helps in analyzing how well and how thoroughly the software is being tested, helping the team better understand how thoroughly their test cases cover the code.

The Salient features of Code Coverage are listed below:

• Execution Coverage: It tracks which lines, statements, or branches ran during tests, revealing untested areas.
• White‑Box Testing Insight: Code coverage is a form of white-box testing that uses knowledge of the code structure to find gaps.
• Quantitative Metric: It gives a percentage score (like 70% covered), so teams can focus on increasing test effectiveness.
• Guides Test Improvement: Knowing which parts aren’t covered helps write tests to fill those gaps and improve reliability.
• Limits of Code Coverage: Even 100% coverage doesn’t ensure bug-free code, it just shows which code was executed.

LambdaTest is a digital testing platform that enables you to execute automation tests and supports popular code coverage tools like JaCoCo, RKTracer, and Serenity during automation.

With LambdaTest, you can run tests on your grid, generate coverage reports, and quickly identify untested code areas directly from the platform.