RSpec shared examples for ActiveModel::Lint

active_model_lint.rb

# adapted from rspec-rails http://github.com/rspec/rspec-rails/blob/master/spec/rspec/rails/mocks/mock_model_spec.rb
# put this in a file in your spec/support directory, or add the code to the spec_helper.rb
# USAGE:
#
#     context "ActiveModel Lint" do
#       it_behaves_like "an ActiveModel", YourModel.new
#     end

shared_examples "an ActiveModel" do |model|
  require 'test/unit/assertions'
  require 'active_model/lint'
  include Test::Unit::Assertions
  include ActiveModel::Lint::Tests

  active_model_lints = ActiveModel::Lint::Tests.public_instance_methods.map(&:to_s).grep(/^test/)

  let(:model) { model }

  active_model_lints.each do |test_name|
    it "#{test_name.sub(/^test_/, '')}" do
      send(test_name)
    end
  end
end