bun-test

Set up unit testing in Bun by creating a bunfig.toml file in your project root to configure the test runner. This enables Jest-compatible APIs for efficient unit, integration, and snapshot testing scenarios directly within your Bun application.

You can migrate Jest tests to Bun seamlessly because Bun provides Jest-compatible APIs. This allows you to run your existing test suites without rewriting them while leveraging Bun's speed for 3-10x faster test execution compared to Jest.

Bun test runner supports mocking and coverage reporting natively. You can configure these features along with test timeouts via the bunfig.toml file to ensure all code paths are covered during your unit and integration testing workflows.

Test execution is slow with Jest because of its runtime overhead, whereas Bun offers a significantly faster alternative. Configuring Bun's built-in test runner optimizes development workflows by reducing test execution time by 3-10x compared to Jest.

The best way to configure test timeouts and coverage in Bun is by defining the settings in your bunfig.toml file. This configuration file allows you to easily manage test runner behavior, coverage reporting, and execution timeouts.

You do not need Jest to run snapshot tests in a Bun project. Bun includes a built-in test runner with Jest-compatible APIs that fully supports snapshot testing scenarios, mocking, and coverage reporting without external dependencies.