mail_form gem rspec "undefined method `email' for" - ruby-on-rails

Question

how can I write a test mail_form gem?
Вut the test gives an error.
How to associate a OrderForm and MailForm?
I have :
model:
class OrderForm < MailForm::Base
attributes :name
attributes :email
attributes :phone_number
attributes :order_name
attributes :address
attributes :file_1, attachment: true
def mail_attachments
[:file_1]
end
controller, where:
class OrdersController < ApplicationController
def create
#order_form = OrderForm.new(params[:order_form])
#order_form.deliver
redirect_to root_path, notice: 'Заявка отправлена'
end
end
end view(form of sending a letter):
orders/new.html.haml_spec.rb
=form_for #order_form, url: orders_path, method: :post do |f|
=f.text_field :name, placeholder: 'ФИО', class: 'gui-input'
=f.text_field :email, placeholder: 'Email', class: 'gui-input'
=f.text_field :phone_number, placeholder: 'Номер телефона',
end I write test:
require 'rails_helper'
RSpec.describe "orders/new", type: :view do
it do
assign(:order, build(:order))
render
expect(rendered).to have_field :name
end
end

Answer 1

check the output of rake routes, url orders/new will execute the orders#new action and render the view orders/new.html.erb
GET /orders/new orders#new return an HTML form for creating a new order
new.html.erb will use the variables from your orders#new action. You are missing those variables
class OrdersController < ApplicationController
def new
#order_form = OrderForm.new
end
def create
#order_form = OrderForm.new(params[:order_form])
#order_form.deliver
redirect_to root_path, notice: 'Заявка отправлена'
end
end