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Lifecycle hooks

Learn how to use beforeAll, beforeEach, afterEach, and afterAll lifecycle hooks in Bun tests

Finding tests

Learn how Bun's test runner discovers and filters test files in your project

Mocks

Learn how to create and use mock functions, spies, and module mocks in Bun tests

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Per-Test Setup and Teardown Per-Scope Setup and Teardown Scoped to a Describe Block Scoped to a Test File onTestFinished Global Setup and Teardown Practical Examples Database Setup API Server Setup Mock Setup Async Lifecycle Hooks Nested Hooks Error Handling Best Practices Keep Hooks Simple Use Appropriate Scope Clean Up Resources