Error undefined method 'sign_in_as!'

What happens is that the helper is not loaded in your test.

You need to include them in the test

For example:

class AuthenticationTest < ActionView::TestCase
  include AuthenticationHelper
end

Good morning, I did what you told me, but the error persists. I'm using:

File: authentication_helpers.rb

module AuthenticationHelpers
     def sign_in_as!(user)
         visit '/signin'
         fill_in "Name", with: user.name
         fill_in "Password", with: user.password
         click_button 'Sign in'
         expect(page).to have_content("Signed in successfully.")
     end
end

RSpec.configure do |c|
    c.include AuthenticationHelpers, type: :feature
end

The RSpec.configure of the | c | ... does not it include the entire test?

The file I am testing is as follows: editing_tickets_spec.rb

require 'rails_helper'

require 'capybara / rails'

"Editing tickets" feature

let!(:project) { FactoryGirl.create(:project) }
let!(:user) { FactoryGirl.create(:user) }
let!(:ticket) do
  ticket =  FactoryGirl.create(:ticket, project: project) 
  ticket.update(user: user)
  ticket
end

before do
    sign_in_as!(user)
    visit "/"
    click_link project.name
    click_link ticket.title
    click_link "Edit Ticket"
end

scenario "Updating a ticket" do
    fill_in "Title", with: "Make it really shiny!"
    click_button "Update Ticket"

    expect(page).to have_content "Ticket has been updated."

    within("#ticket h2") do
        expect(page).to have_content("Make it really shiny!")
    end

    expect(page).to_not have_content ticket.title
end

scenario "Updating a ticket with invalid information" do
    fill_in "Title", with: ""
    click_button "Update Ticket"

    expect(page).to have_content("Ticket has not been updated.")
end

end

I already gave include and tried to also put the type:: feature feature and before, but nothing! this same error will always appear:

rodolfopeixoto@rodolfopeixoto-3IBit:~/portifolio/projeto/rails/ticketee$ rspec spec/features/editing_tickets_spec.rb 

FF

Failures:

1) Editing tickets Updating a ticket      Failure / Error: sign_in_as! (User)      NoMethodError:        undefined method sign_in_as!' for #<RSpec::ExampleGroups::EditingTickets:0x007f199ed16e38> # ./spec/features/editing_tickets_spec.rb:17:in block (2 levels) in '

2) Editing tickets Updating a ticket with invalid information      Failure / Error: sign_in_as! (User)      NoMethodError:        undefined method sign_in_as!' for #<RSpec::ExampleGroups::EditingTickets:0x007f199ef569a0> # ./spec/features/editing_tickets_spec.rb:17:in block (2 levels) in '

Finished in 0.04161 seconds (files took 1.52 seconds to load) 2 examples, 2 failures

Failed examples:

rspec ./spec/features/editing_tickets_spec.rb:24 # Editing tickets Updating a ticket rspec ./spec/features/editing_tickets_spec.rb:37 # Editing tickets Updating a ticket with invalid information

I am grateful my friend.