What is Code Coverage?
Code coverage is a metric that measures how much of your source code is executed during testing. It helps identify untested areas and improves overall test effectiveness. π§βπ»π
Why Use Code Coverage?
βοΈ Measures test efficiency π
βοΈ Identifies untested code β
βοΈ Provides a quantitative analysis π
Types of Code Coverage:
πΒ Statement CoverageΒ β Ensures every line of code is executed at least once.
πΒ Branch CoverageΒ β Tests all possible branches in decision-making constructs.
π€Β Decision CoverageΒ β Validates all true/false conditions in the code.
π’Β Condition CoverageΒ β Evaluates logical sub-expressions independently.
βοΈΒ Finite State Machine (FSM) CoverageΒ β Tests transitions between system states.
Code Coverage vs. Functional Coverage
π οΈΒ Code CoverageΒ β Focuses on testing the structure of the code.
π―Β Functional CoverageΒ β Ensures all features work as expected.
Popular Code Coverage Tools:
πΉ Cobertura
πΉ Clover
πΉ Emma
πΉ Sonar
πΉ Bullseye for C++
Using code coverage helps improve software quality, but it doesnβt guarantee the software is bug-free! ππ‘