What is the Importance of Code Coverage in Software Testing?

Code coverage is a metric used in software testing to measure how much of your source code is exercised by your test suite. It helps teams identify untested parts of the code, ensuring that critical logic and features are adequately validated.

There are several types of code coverage:

Line coverage: Measures whether each line of code has been executed.

Branch coverage: Ensures all possible branches (like if-else conditions) are tested.

Function coverage: Tracks whether each function or method has been called during testing.

High code coverage does not guarantee bug-free software, but it increases confidence in the reliability of your application. By analyzing coverage reports, developers can prioritize areas that need additional tests, optimize test cases, and maintain better software quality over time.