MiniTest integration for Rails 3 and 4
gem install minitest-rails
This installs the following gems:
Create a new rails app without Test::Unit:
rails new MyApp --skip-test-unit
Add minitest-rails to the Gemfile:
Next run the installation generator with the following:
rails generate mini_test:install
This will add the test_helper.rb file to the test directory.
This project aims to enable MiniTest within the Rails TestCase classes. Your test will continue to inherit from ActiveSupport::TestCase, which will now support the spec DSL. You can generate test files with the standard model, controller, resource, and other generators:
rails generate model User
And you can specify generating the tests using the MiniTest::Spec DSL on any of the generators by providing the --spec option:
rails generate model User --spec
And you can specify not generating the fixture for a model by providing the --skip-fixture option:
rails generate model User --skip-fixture
You can also set these as defaults by adding the following to the config/application.rb file:
config.generators do |g| g.test_framework :mini_test, :spec => true, :fixture => false end
To run your tests, minitest-rails provides multiple rake tasks by default, for a complete list, simply run rake -T.
You can also add any directories under test/ and minitest-rails will automatically create the associated rake task for it. So let say you add a test/api/ directory, rake minitest:api will automagically be available.
If you want to automatically run rake minitest:api when you call rake minitest, add this line to a new .rake file under lib/tasks/:
MiniTest::Rails::Testing.default_tasks << 'api'
Efforts have been made to be compatible with Ruby 1.8.7, but some rough edges may remain. For the latest information on 1.8 compatibility see the wiki: github.com/blowmage/minitest-rails/wiki/Running-on-1.8
You can use Capybara for feature tests by adding minitest-rails-capybara as a dependency. See the README for more information: github.com/blowmage/minitest-rails-capybara
The 0.9 release marks a new direction for minitest-rails. Deprecations have been added for the features that won’t make it to 1.0. See instructions for upgrading to 0.9: github.com/blowmage/minitest-rails/wiki/Upgrading-to-0.9
Existing tests that call describe will not work, since describe is used by MiniTest::Spec blocks.
RSpec and minitest’s spec DSL are incompatible and cannot both be loaded at the same time. If your tests using the spec DSL are not running it is likely the RSpec DSL is also loaded. Check the dependencies and make sure RSpec is only loaded when running the specs.
If you need to use some RSpec features with minitest-rails require only the needed gems. e.g. To use RSpec mocks with minitest-rails require the “rspec-mocks” gem only, and not the main “rspec” gem which activates the RSpec DSL.
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Copyright © 2013 Mike Moore
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