Move temporary AB test code to private method

Author: richardTowers

app/controllers/content_items_controller.rb

@@ -24,31 +24,7 @@ class ContentItemsController < ApplicationController
   def show
     load_content_item
 
-    # TEMPORARY (author: richard.towers, expected end date: November 30 2023)
-    # Content specific AB test for the Find your UTR number page
-    placeholder = "{{ab_test_find_utr_number_video_links}}"
-    if @content_item.base_path == "/find-utr-number" && @content_item.body.include?(placeholder)
-      ab_test = GovukAbTesting::AbTest.new(
-        "find_utr_number_video_links",
-        dimension: 61, # https://docs.google.com/spreadsheets/d/1h4vGXzIbhOWwUzourPLIc8WM-iU1b6WYOVDOZxmU1Uo/edit#gid=254065189&range=69:69
-        allowed_variants: %w[A B Z],
-        control_variant: "Z",
-      )
-      @requested_variant = ab_test.requested_variant(request.headers)
-      @requested_variant.configure_response(response)
-
-      replacement = case @requested_variant.variant_name
-                    when "A"
-                      I18n.t("ab_tests.find_utr_number_video_links.A")
-                    when "B"
-                      I18n.t("ab_tests.find_utr_number_video_links.B")
-                    else
-                      I18n.t("ab_tests.find_utr_number_video_links.Z")
-                    end
-      @content_item.body.sub!(placeholder, replacement)
-    end
-    # /TEMPORARY
-
+    temporary_ab_test_find_utr_page
     set_expiry
 
     if is_service_manual?
@@ -291,4 +267,31 @@ def csp_connect_src
 
     @content_item.csp_connect_src
   end
+
+  # TEMPORARY (author: richard.towers, expected end date: February 2024)
+  # Content specific AB test for the Find your UTR number page
+  def temporary_ab_test_find_utr_page
+    placeholder = "{{ab_test_find_utr_number_video_links}}"
+    if @content_item.base_path == "/find-utr-number" && @content_item.body.include?(placeholder)
+      ab_test = GovukAbTesting::AbTest.new(
+        "find_utr_number_video_links",
+        dimension: 61, # https://docs.google.com/spreadsheets/d/1h4vGXzIbhOWwUzourPLIc8WM-iU1b6WYOVDOZxmU1Uo/edit#gid=254065189&range=69:69
+        allowed_variants: %w[A B Z],
+        control_variant: "Z",
+      )
+      @requested_variant = ab_test.requested_variant(request.headers)
+      @requested_variant.configure_response(response)
+
+      replacement = case @requested_variant.variant_name
+                    when "A"
+                      I18n.t("ab_tests.find_utr_number_video_links.A")
+                    when "B"
+                      I18n.t("ab_tests.find_utr_number_video_links.B")
+                    else
+                      I18n.t("ab_tests.find_utr_number_video_links.Z")
+                    end
+      @content_item.body.sub!(placeholder, replacement)
+    end
+  end
+  # /TEMPORARY
 end