A test runner is a tool or software component that executes test cases for software applications. It automates the process of running tests and provides results on whether the tests passed or failed.
The main purpose of a test runner is to streamline the testing process by automatically running tests and reporting outcomes. This helps in ensuring that the software works correctly and meets its requirements.
A test runner simplifies the process of executing and managing tests, providing valuable feedback and helping to ensure the quality of software. By automating test execution and reporting results, it makes the testing process more efficient and reliable.