Bun

Test Commands

Run tests with Bun's fast, Jest-compatible test runner. Includes built-in matchers, mocking, and snapshot testing.

8 commands

Pro Tips

Bun test is Jest-compatible - most Jest tests work without changes.

Use '--coverage' to generate code coverage reports.

Use '--watch' to re-run tests on file changes.

Common Mistakes

Some Jest plugins may not be compatible - test thoroughly after migration.

Test files should be named *.test.ts or *.spec.ts for auto-discovery.

Commands

Run Tests

$ bun test

Run all tests in project

Bail on Failure

$ bun test --bail

Stop on first test failure

Test with Coverage

$ bun test --coverage

Generate code coverage report

Run Specific Test File

$ bun test <file.test.ts>

Run tests in specific file

Filter Tests

$ bun test --filter "test name"

Run tests matching pattern

Rerun Failed Tests

$ bun test --rerun-each 3

Rerun each test multiple times

Set Test Timeout

$ bun test --timeout 10000

Set test timeout in milliseconds

Watch Tests

$ bun test --watch

Re-run tests on file changes

Bun