juniorUnit Testing
What is a test framework?
Updated May 6, 2026
Short answer
A test framework provides tools and structure for writing and running tests.
Deep explanation
Test frameworks offer assertion libraries, test runners, setup/teardown hooks, and reporting tools. Examples include Jest, Mocha, and PyTest.
Real-world example
Using Jest in React applications for component testing.
Common mistakes
- Confusing frameworks with assertion libraries.
Follow-up questions
- Is Jest a framework or library?
- Why use a test framework?