Unit Testing
Testing individual units of code in isolation to verify each behaves correctly on its own.
What is Unit Testing?
What is Unit Testing?
Unit testing exercises the smallest testable pieces of code—a function, a method, a class—in isolation, with dependencies mocked out, to verify each behaves correctly on its own. Unit tests are fast, focused, and pinpoint failures precisely, making them the broad base of a healthy test pyramid. They can't confirm that components work together, though, which is where integration and end-to-end tests come in. A balanced strategy layers fast unit tests under recorded E2E flows that validate the whole system from the user's point of view.