What is Path Testing with Examples

Path testing is a white-box testing technique designed to validate all possible execution paths within a program's source code to identify logical errors and ensure comprehensive code coverage. By using control flow graphs to represent a program's structure, path testing allows testers to create test cases that execute each independent path, which is determined by the cyclomatic complexity metric. This method aims to uncover hidden defects, enhance software reliability, and improve code quality by ensuring that each statement and decision in the code is executed at least once. Although path testing is beneficial for detecting logical flaws and ensuring early defect identification, it can be challenging to scale for large, complex software systems due to the high number of potential paths. Despite its limitations, path testing is a critical component of software quality assurance, especially when applied to critical modules, and it complements other testing strategies to ensure robust and maintainable code.