shoulda-matchers
+ +
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.
+ +ActiveRecord Matchers
+ +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
+ActiveModel Matchers
+ +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("a@b.com").for(:email) }
+ it { should ensure_inclusion_of(:age).in_range(1..100) }
+ it { should_not allow_mass_assignment_of(:password) }
+end
+ActionController Matchers
+ +Matchers to test common patterns:
+ +describe PostsController, "#show" do
+ 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
+Independent Matchers
+ +Matchers to test non-Rails-dependent code:
+ +describe Human do
+ it { should delegate_method(:work).to(:robot) }
+end
+Installation
+ +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"
+end
+Shoulda will automatically include matchers into the appropriate example groups.
+ +Credits
+ +Shoulda is maintained and funded by thoughtbot. +Thank you to all the contributors.
+ +License
+ +Shoulda is Copyright © 2006-2012 thoughtbot, inc. +It is free software, and may be redistributed under the terms specified in the MIT-LICENSE file.
+