rails_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'spec_helper'
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!
require 'devise'

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside
# of increasing the boot-up time by auto-requiring all files in the support
# directory. Alternatively, in the individual `*_spec.rb` files, manually
# require only the support files necessary.
#
# Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }

# Checks for pending migrations before tests are run.
# If you are not using ActiveRecord, you can remove this line.
ActiveRecord::Migration.maintain_test_schema!

RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.include Devise::TestHelpers, :type => :controller

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # RSpec Rails can automatically mix in different behaviours to your tests
  # based on their file location, for example enabling you to call `get` and
  # `post` in specs under `spec/controllers`.
  #
  # You can disable this behaviour by removing the line below, and instead
  # explicitly tag your specs with their type, e.g.:
  #
  #     RSpec.describe UsersController, :type => :controller do
  #       # ...
  #     end
  #
  # The different available types are documented in the features, such as in
  # https://relishapp.com/rspec/rspec-rails/docs
  config.infer_spec_type_from_file_location!
end

users_controller_spec.rb

require 'rails_helper'

describe UsersController, :type => :controller do

  before do
    @user = User.create!(:email => "[email protected]", :password => "12345678")
  end
    
  describe "GET #show" do

    context "user is logged in" do
      before do
        sign_in @user
      end
      
      it "loads correct user details" do
        get :show, id: @user.id
        expect(response).to have_http_status(200)
        expect(assigns(:user)).to eq @user
      end
    
    end
    
    context "user is not logged in" do
      before do
        sign_out @user
      end
      it "redirects to login" do
        get :show, id: @user.id
        expect(response).to redirect_to(root_path)
      end
    end
  
  end #end describe get show
  
    before do
      @user2 = User.create!(:email => "[email protected]", :password => "12345678")
    end
    
    context "GET #show user2" do
      before do
        sign_in @user #sign in user1
      end
      
      it "user1 cannot access user2 #show" do
        get :show, id: @user2.id
        expect(assigns(:user)).to eq @user
        expect(response).to redirect_to(root_path)
      end
    
    end
    
  
end #end describe Users Controller