Address Douwe's feedback

Signed-off-by: NRémy Coutable <remy@rymai.me>

doc/development/testing_guide/best_practices.md

@@ -72,7 +72,7 @@ To resume the test run, press any key.
 
 For example:
 
-```ruby
+```
 $ bin/rspec spec/features/auto_deploy_spec.rb:34
 Running via Spring preloader in process 8999
 Run options: include {:locations=>{"./spec/features/auto_deploy_spec.rb"=>[34]}}

spec/support/live_debugger.rb

@@ -2,9 +2,10 @@ require 'io/console'
 
 module LiveDebugger
   def live_debug
-    puts "\nCurrent example is paused for live debugging."
+    puts
+    puts "Current example is paused for live debugging."
     puts "Opening #{current_url} in your default browser..."
-    puts "The current user credentials are: #{@current_user.username} / 12345678" if @current_user
+    puts "The current user credentials are: #{@current_user.username} / #{@current_user.password}" if @current_user
     puts "Press any key to resume the execution of the example!!"
 
     `open #{current_url}`

spec/support/login_helpers.rb

@@ -11,6 +11,13 @@ module LoginHelpers
     @current_user = resource
   end
 
+  # Overriding Devise::Test::IntegrationHelpers#sign_out to clear @current_user.
+  def sign_out(resource_or_scope)
+    super
+
+    @current_user = nil
+  end
+
   # Internal: Log in as a specific user or a new user of a specific role
   #
   # user_or_role - User object, or a role to create (e.g., :admin, :user)
@@ -49,6 +56,7 @@ module LoginHelpers
   def gitlab_sign_out
     find(".header-user-dropdown-toggle").click
     click_link "Sign out"
+    @current_user = nil
 
     expect(page).to have_button('Sign in')
   end