# Test Runner

The tool that finds, runs and reports tests.

## What is **Test Runner**?

A **test runner** finds your tests, runs them and reports which passed and failed, like `dotnet test`, `pytest` or `vitest`.

Level: Novice · [More Unit Testing terms at this level](https://www.ask-codey.com/glossary/subjects/unit-testing/novice)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/test-runner