Minitest for Rails

Comprehensive guide to testing Rails applications with Minitest, the default Rails testing framework.

Test Case Classes

Rails provides specialized test case base classes:

Base Class	Purpose	Location
`ActiveSupport::TestCase`	Model and unit tests	`test/models/`
`ActionDispatch::IntegrationTest`	Multi-controller workflow tests	`test/integration/`
`ActionDispatch::SystemTestCase`	Browser-based end-to-end tests	`test/system/`
`ActionController::TestCase`	Functional controller tests	`test/controllers/`
`ActionView::TestCase`	View and helper tests	`test/helpers/`
`ActionMailer::TestCase`	Mailer tests	`test/mailers/`
`ActiveJob::TestCase`	Background job tests	`test/jobs/`