# mocha > A feature-rich JavaScript test framework. > More information: . - Run tests with default configuration or as configured in `mocha.opts`: `mocha` - Run tests contained at a specific location: `mocha {{directory/with/tests}}` - Run tests that match a specific `grep` pattern: `mocha --grep {{regular_expression}}` - Run tests on changes to JavaScript files in the current directory and once initially: `mocha --watch` - Run tests with a specific reporter: `mocha --reporter {{reporter}}`