Less verbose controller macros for shoulda.

controller_macros.rb

# Helper controller macros that define:
# on_get, on_post, on_put, on_delete

module ControllerMacros
  [:get, :post, :put, :delete].each do |method|
    class_eval <<-RUBY
      def on_#{method}(action, options = {}, &block)
        on_http_method(#{method.inspect}, action, options, &block)
      end
    RUBY
  end

  def on_http_method(method, action, options_hash_or_lambda = {}, &block)
    options = options_hash_or_lambda
    description = "on #{method.to_s.upcase} to #{action.inspect}"
    if options.is_a?(Hash)
      options.each do |key, value|
        description << " with #{key}=#{value.inspect}"
      end
    end
    context description do
      setup do
        opts = options.is_a?(Proc) ? options.bind(self).call : options
        send(method, action, opts)
      end
      merge_block(&block)
    end
  end
end

class Test::Unit::TestCase
  extend ::ControllerMacros
end

old_projects_controller_test.rb

#  ____  _____ _____ ___  ____  _____ 
# | __ )| ____|  ___/ _ \|  _ \| ____|
# |  _ \|  _| | |_ | | | | |_) |  _|  
# | |_) | |___|  _|| |_| |  _ <| |___ 
# |____/|_____|_|   \___/|_| \_\_____|

require 'test_helper'

class ProjectsControllerTest < ActionController::TestCase
  context "on GET to :index" do
    setup do
      get :index
    end

    should_respond_with :success
    should_assign_to :projects
  end

  context "on GET to :new" do
    setup do
      get :new
    end

    should_respond_with :success
  end

  # ...

  context "Accessing a project" do
    setup do
      @project = Factory.create(:project)
    end

    context "on GET to :show" do
      setup do
        get :show, :id => @project
      end

      should_respond_with :success
    end

    context "on PUT to :update" do
      setup do
        put :update, { :id => @project, :project => {} }
      end

      should_redirect_to "project_path(@project)"
    end

    # ...
  end
end

projects_controller_test.rb

#     _    _____ _____ _____ ____  
#    / \  |  ___|_   _| ____|  _ \ 
#   / _ \ | |_    | | |  _| | |_) |
#  / ___ \|  _|   | | | |___|  _ < 
# /_/   \_\_|     |_| |_____|_| \_\

require 'test_helper'

class ProjectsControllerTest < ActionController::TestCase
  on_get :index do
    should_respond_with :success
    should_assign_to :projects
  end

  on_get :new do
    should_respond_with :success
  end

  # ...

  context "Accessing a project" do
    setup do
      @project = Factory.create(:project)
    end

    on_get :show, lambda { Hash[:id => @project] } do
      should_respond_with :success
    end

    on_put :update, lambda { Hash[:id => @project, :project => {}] } do
      should_redirect_to "project_path(@project)"
    end

    # ...
  end
end