before(:each) do
    @valid_attributes = {
      :subject => "Test Subject",
      :body => "Body",
      :sender => User.make,
      :recipient => User.make
    }
  end

it "should require a subject" do
      #message = Message.create(@valid_attributes.delete(:subject)) #gives me errors on saying no method found: stringify keys
      message = Message.create(@valid_attributes[:subject] = nil) #works
      message == nil
    end