undefined method `remember' for #<ApplicationHelperTest:0x000000075bf4d0> - ruby-on-rails

Question

I am following tutorials mentioned https://www.railstutorial.org/book/log_in_log_out.
While I am executing a test with given command :
bundle exec rake test TEST=test/helpers/sessions_helper_test.rb
I am encountering Errors given below :
1) Error:
ApplicationHelperTest#test_current_user_returns_nil_when_remember_digest_is_wrong:
NoMethodError: undefined method remember' for #<ApplicationHelperTest:0x000000075bf4d0>
test/helpers/sessions_helper_test.rb:7:insetup'
2) Error:
ApplicationHelperTest#test_Current_user_returns_right_user_with_session_is_nill:
NoMethodError: undefined method remember' for #<ApplicationHelperTest:0x00000007702400>
test/helpers/sessions_helper_test.rb:7:insetup'
I have a helper class methods defined in /apps/helpers/session_helper.rd.
--remember method is part of this class .. still the /test/helpers/sessions_helper_test is unable to find that method.
Code for /test/helpers/sessions_helper_test.rb file is
require 'test_helper'
class ApplicationHelperTest < ActionView::TestCase
def setup
#user = users(:michael)
remember(#user)
end
test "Current_user returns right user with session is nill" do
assert_equal #user, current_user
assert is_logged_in?
end
test "current_user returns nil when remember digest is wrong" do
#user.update_attribute(:remember_digest, User.digest(User.new_token))
assert_nil current_user
end
end
This is a code for module SessionsHelper
module SessionsHelper
# Logs in the given user.
def log_in(user)
session[:user_id] = user.id
end
# Remembers a user in a persistent session.
def remember(user)
user.remember
cookies.permanent.signed[:user_id] = user.id
cookies.permanent[:remember_token] = user.remember_token
end
# Returns the current logged-in user (if any).
def current_user
if (user_id = session[:user_id])
#current_user ||= User.find_by(id: user_id)
elsif (user_id = cookies.signed[:user_id])
user = User.find_by(id: user_id)
if user && user.authenticated?(cookies[:remember_token]) #here is an Evaluation Magic for a given Method
log_in user
#current_user = user
end
end
end
# Returns true if the user is logged in, false otherwise.
def logged_in?
!current_user.nil?
end
# Logs out the current user. # Actions (Set digest to Nill) (Delete the Cookie) (Delete the Session) (Set current_user variable to nill)
def log_out
forget(current_user)
session.delete(:user_id)
#current_user = nil
end
def forget(user)
user.forget # is to forget the user .. means set th remember_digest to nill -- Go to User Model
cookies.delete(:user_id)
cookies.delete(:remember_token)
end
end
Users.yml file is :
# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
michael:
name: Michael Example
email: michael#example.com
password_digest: <%= User.digest('password') %>
archer:
name: Sterling Archer
email: duchess#example.gov
password_digest: <%= User.digest('password') %>
-----------------Got the Solution -------------------
you need to include HelperModule to test Module ..
after fix code for test/helpers/sessions_helper_test.rb will look like
require 'test_helper'
class ApplicationHelperTest < ActionView::TestCase
include SessionsHelper # This line is added to code.
def setup
#user = users(:michael)
remember(#user)
end
test "Current_user returns right user with session is nill" do
assert_equal #user, current_user
assert is_logged_in?
end
test "current_user returns nil when remember digest is wrong" do
#user.update_attribute(:remember_digest, User.digest(User.new_token))
assert_nil current_user
end
end

Answer 1

Following the tutorial as well and had a similar issue. You can avoid using include by updating your class from:
class ApplicationHelperTest < ActionView::TestCase
to:
class SessionsHelperTest < ActionView::TestCase