gistfile1.txt

shared_examples_for :CRUD do |options|
  root_key = options[:klass].name.split('::').last.camelize(:lower)
  options[:index_path] ||= "/#{options[:klass].name.underscore.pluralize}"
  options[:show_path]  ||= "#{options[:index_path]}/:id"
  options[:security_context] = $user if options[:security_context].nil?
  options[:model_pk] ||= :id
  index_path, show_path, actions = options[:index_path], options[:show_path], options[:actions]

  before :all do
    options.each{|k,v| instance_variable_set :"@#{k}", v }
    @root_key = root_key
    @model    = @klass.make!(@klass_arguments.try(:call) || {})
    @show_path =  @show_path.gsub ':id', @model.send(@model_pk).to_s
  end

  def remove_timestamps!(attributes)
    %w(created_at updated_at).each{|key| attributes.delete(key) || attributes.delete(key.to_sym) }
    attributes
  end

  if actions.include?(:index)
    describe_request :index, request_path: index_path, method: 'GET' do
      it "lists #{root_key.pluralize}" do
        get @index_path
        response.code.should == '200'
        response.body.should have_json_size(@klass.count).at_path(@root_key.pluralize)
      end
    end
  end

  if actions.include?(:create)
    describe_request :create, request_path: index_path, method: 'POST' do
      it "creates #{root_key}" do
        attributes = @klass.make(@klass_arguments.try(:call) || {}).attributes
        attributes = if @security_context
          attributes.slice(
            *@klass.restrict(@security_context).reflect_on_security[:restrictions].allowed_fields[:create].map(&:to_s)
          )
        else
          remove_timestamps!(attributes)
        end
        attributes.merge!(@additional_attributes.try(:call) || {})
        if options[:unique_attr]
          @klass.destroy_all
        end
        expect {
          post @index_path, @root_key.underscore => attributes
          response.code.should == '200'
        }.to change(@klass, :count).by(1)
      end

      it "rejects to create invalid #{root_key}" do
        expect {
          if options[:required_root_key]
            @blank_attributes = @klass.make.as_json
          else
            @blank_attributes = {}
          end
          post @index_path, @root_key.underscore => @blank_attributes
          response.code.should == '422'
        }.to change(@klass, :count).by(0)
      end
    end
  end

  if actions.include?(:show)
    describe_request :show, request_path: show_path, method: 'GET' do
      it "reads #{root_key}" do
        get @show_path
        response.code.should == '200'
        response.body.should have_json_keys([@root_key])
      end
    end
  end

  if actions.include?(:update)
    describe_request :update, request_path: show_path, method: 'PUT' do
      it "updates #{root_key}" do
        attributes = @klass.make(@klass_arguments.try(:call) || {}).attributes
        attributes = if @security_context
          attributes.slice(
            *@klass.restrict(@security_context).reflect_on_security[:restrictions].allowed_fields[:update].map(&:to_s)
          )
        else
          remove_timestamps!(attributes)
        end
        attributes.merge!(@additional_attributes.try(:call) || {})
        put @show_path, @root_key.underscore => attributes
        response.code.should == '200'
      end

      if actions.include?(:update_invalid)
        it "rejects to update invalid #{root_key}" do
          attributes = if @security_context
            @klass.restrict(@security_context).reflect_on_security[:restrictions].allowed_fields[:update].
              each_with_object({}) {|k, h| h[k] = ''}
          else
            @klass.new.attributes
          end
          attributes.merge!(@additional_attributes)
          put @show_path, @root_key.underscore => attributes
          response.code.should == '422'
        end
      end
    end
  end

  if actions.include?(:destroy)
    describe_request :delete, request_path: show_path, method: 'DELETE' do
      it "deletes #{root_key}" do
        expect {
          delete @show_path
          response.code.should == '200'
        }.to change(@klass, :count).by(-1)
      end
    end
  end
end