Glossary term
What is arrange-act-assert (Arrange, act, assert)?
arrange-act-assert stands for Arrange, act, assert.
The three parts of a clear test: set up, do the thing, check the result.
Learn it properly · Testing From ZeroLesson 1: Unit Tests and Test DoublesArrange-act-assert, stubs, mocks, spies and fakes, fake timers, async errors, test isolation, and why mocking your own internals hurts.