Writing tests Test configuration Runtime behavior Finding tests Lifecycle hooks Mocks Snapshots Dates and times DOM testing Code coverage Test Reporters

Finding tests

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

Runtime behavior

Learn about Bun test's runtime integration, environment variables, timeouts, and error handling

Lifecycle hooks

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

On this page

Default Discovery Logic Exclusions Customizing Test Discovery Position Arguments as Filters Specifying Exact File Paths Filter by Test Name Changing the Root Directory Execution Order