Fix for failing Rubocop tests.

Changes:
 - To deal with missing favicon.ico error ( ActionController::RoutingError:
       No route matches [GET] "/favicon.ico") :
   added config/routes_test.rb to add a route will return an empty response
   with a 200 OK status code when the browser requests the favicon.ico file.
   Then for test purposes we add the lines to config/encvironments/test.rb:
     # Add config/routes_test.rb to routes
     config.paths['config/routes.rb'] << Rails.root.join('config/routes_test.rb')

  - The other outstanding errors arose because in the test environment
    we sometimes encounter errors like (Selenium::WebDriver::Error::ElementClickInterceptedError: element click intercepted:
    # Element <input type="submit" name="commit" value="Change affiliation" class="btn btn-secondary" data-disable-with="Change affiliation">
    # is not clickable at point (101, 203). Other element would receive
the click: <div id="ui-id-2" tabindex="-1"
class="ui-menu-item-wrapper">...</div>).
    To get round this we use JS to click on element using code like
this:
  change_affiliation_input_button = find('input[value="Change affiliation"]')
   execute_script('arguments[0].click();', change_affiliation_input_button)

config/environments/test.rb

@@ -62,6 +62,9 @@
   # config.action_view.annotate_rendered_view_with_filenames = true
 
   config.i18n.enforce_available_locales = false
+
+  # Add config/routes_test.rb to routes
+  config.paths['config/routes.rb'] << Rails.root.join('config/routes_test.rb')
 end
 
 # Used by Rails' routes url_helpers (typically when including a link in an email)

config/routes_test.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+Rails.application.routes.draw do
+  # Define your test-specific routes here
+
+  # This route will return an empty response with a 200 OK status code
+  # when the browser requests the favicon.ico file.
+  get '/favicon.ico', to: proc { |_env| [200, {}, ['']] }
+end

spec/features/super_admins/merge_org_spec.rb

@@ -45,7 +45,16 @@
     expect(page).to have_text('Merge Organisations')
     choose_suggestion('org_org_name', @to_org)
 
-    click_button 'Analyze'
+    # rubocop:disable Layout/LineLength
+    # Using JS to click on button as click_button 'Analyze' fails due to error like
+    # Selenium::WebDriver::Error::ElementClickInterceptedError: element click intercepted:
+    # Element <button name="button" type="submit" class="btn btn-primary">...</button> is not clickable at point (86, 349).
+    # Other element would receive the click: <div id="ui-id-2" tabindex="-1" class="ui-menu-item-wrapper">...</div>
+    # So replacing  click_button 'Analyze'with
+    # rubocop:enable Layout/LineLength
+    analyze_button = find('button', text: 'Analyze')
+    execute_script('arguments[0].click();', analyze_button)
+
     # Wait for response
     sleep(0.3)
     expect(page).to have_text('Summary:')

spec/features/templates/templates_upgrade_customisations_spec.rb

@@ -52,7 +52,16 @@
 
     # Move to the other funder Org's Templates
     choose_suggestion('superadmin_user_org_name', funder)
-    click_button('Change affiliation')
+
+    # rubocop:disable Layout/LineLength
+    # Using JS to click as click_button "Change affiliation" fails due to error like
+    # Selenium::WebDriver::Error::ElementClickInterceptedError: element click intercepted:
+    # Element <input type="submit" name="commit" value="Change affiliation" class="btn btn-secondary" data-disable-with="Change affiliation">
+    # is not clickable at point (101, 203). Other element would receive the click: <div id="ui-id-2" tabindex="-1" class="ui-menu-item-wrapper">...</div>
+    # So replacing click_button('Change affiliation')
+    # rubocop:enable Layout/LineLength
+    change_affiliation_input_button = find('input[value="Change affiliation"]')
+    execute_script('arguments[0].click();', change_affiliation_input_button)
 
     # Edit the original Template
     click_link "#{funder.name} Templates"