Test::Unit- and RSpec-compatible one-liners that test common Rails functionality. These tests would otherwise be much longer, more complex, and error-prone.
Refer to the shoulda-context gem if you want to know more about using shoulda with Test::Unit.
Matchers to test associations:
describe Post do
it { should belong_to(:user) }
it { should have_many(:tags).through(:taggings) }
end
describe User do
it { should have_many(:posts) }
end
Matchers to test validations and mass assignments:
describe Post do
it { should validate_uniqueness_of(:title) }
it { should validate_uniqueness_of(:title).scoped_to(:user_id, :category_id) }
it { should validate_presence_of(:body).with_message(/wtf/) }
it { should validate_presence_of(:title) }
it { should validate_numericality_of(:user_id) }
it { should ensure_inclusion_of(:status).in_array(['draft', 'public']) }
end
describe User do
it { should_not allow_value("blah").for(:email) }
it { should allow_value("[email protected]").for(:email) }
it { should ensure_inclusion_of(:age).in_range(1..100) }
it { should_not allow_mass_assignment_of(:password) }
end
Matchers to test common patterns:
describe PostsController, "#show" do
it { should permit(:title, :body).for(:create) }
context "for a fictional user" do
before do
get :show, :id => 1
end
it { should assign_to(:user) }
it { should respond_with(:success) }
it { should render_template(:show) }
it { should_not set_the_flash }
end
end
Matchers to test non-Rails-dependent code:
describe Human do
it { should delegate_method(:work).to(:robot) }
end
In Rails 3 and Bundler, add the following to your Gemfile:
group :test do
gem "shoulda-matchers"
end
# `rspec-rails` needs to be in the development group so that Rails generators work.
group :development, :test do
gem "rspec-rails", "~> 2.12"
end
Shoulda will automatically include matchers into the appropriate example groups.
Shoulda is maintained and funded by thoughtbot. Thank you to all the contributors.
Shoulda is Copyright © 2006-2013 thoughtbot, inc. It is free software, and may be redistributed under the terms specified in the MIT-LICENSE file.