From 51e92f8f73bf2c05ad68a3e169654ee14e21e9e1 Mon Sep 17 00:00:00 2001
From: chao-xian <kelvin.gan@digital.cabinet-office.gov.uk>
Date: Fri, 4 Mar 2022 16:25:18 +0000
Subject: [PATCH 1/3] Add test helper to generate pages with specific base_path

This is useful for testing against specific pages when we needed.
---
 test/test_helper.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/test_helper.rb b/test/test_helper.rb
index 7f9ddaac8..e605b8897 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -201,6 +201,15 @@ def setup_and_visit_notification_exempt_page(name)
     end
   end
 
+  def setup_and_visit_a_page_with_specific_base_path(name, base_path, content_id = nil)
+    @content_item = get_content_example(name).tap do |item|
+      item["content_id"] = content_id if content_id.present?
+      item["base_path"] = base_path
+      stub_content_store_has_item(item["base_path"], item.to_json)
+      visit_with_cachebust(item["base_path"])
+    end
+  end
+
   def brexit_citizen_id
     ContentItem::BrexitTaxons::BREXIT_CITIZEN_PAGE_CONTENT_ID
   end

From a669604b0316978ba22d660b176e0ca4166a2cf3 Mon Sep 17 00:00:00 2001
From: chao-xian <kelvin.gan@digital.cabinet-office.gov.uk>
Date: Fri, 4 Mar 2022 16:32:09 +0000
Subject: [PATCH 2/3] Add intervention banner javascript and style tweak

---
 app/assets/javascripts/application.js          | 1 +
 app/assets/stylesheets/components/_banner.scss | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
index 510b9e758..9b276cddd 100644
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -4,6 +4,7 @@
 //= require govuk_publishing_components/components/error-summary
 //= require govuk_publishing_components/components/feedback
 //= require govuk_publishing_components/components/govspeak
+//= require govuk_publishing_components/components/intervention
 //= require govuk_publishing_components/components/metadata
 //= require govuk_publishing_components/components/print-link
 //= require govuk_publishing_components/components/radio
diff --git a/app/assets/stylesheets/components/_banner.scss b/app/assets/stylesheets/components/_banner.scss
index 55c773b78..5349b2e4c 100644
--- a/app/assets/stylesheets/components/_banner.scss
+++ b/app/assets/stylesheets/components/_banner.scss
@@ -34,3 +34,7 @@
   max-width: 30em;
   padding-top: govuk-spacing(2);
 }
+
+.gem-c-intervention {
+  margin-top: govuk-spacing(4);
+}

From 7596e60f36d778c7669f216c2f078ae2e5f622fc Mon Sep 17 00:00:00 2001
From: chao-xian <kelvin.gan@digital.cabinet-office.gov.uk>
Date: Fri, 4 Mar 2022 16:32:39 +0000
Subject: [PATCH 3/3] Add logic to display intervention banner on specific
 pages

---
 app/presenters/content_item_presenter.rb |  6 ++++++
 app/views/layouts/application.html.erb   |  9 ++++++++-
 test/integration/guide_test.rb           | 16 ++++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/app/presenters/content_item_presenter.rb b/app/presenters/content_item_presenter.rb
index 0a3e8ef5d..f307f3c77 100644
--- a/app/presenters/content_item_presenter.rb
+++ b/app/presenters/content_item_presenter.rb
@@ -20,6 +20,8 @@ class ContentItemPresenter
 
   attr_accessor :include_collections_in_other_publisher_metadata
 
+  USER_RESEARCH_PAGES = %w[register-for-self-assessment self-employed-records income-tax-rates].freeze
+
   def initialize(content_item, requested_path, view_context)
     @content_item = content_item
     @requested_path = requested_path
@@ -87,6 +89,10 @@ def show_phase_banner?
     phase.in?(%w[alpha beta])
   end
 
+  def show_study_banner?
+    USER_RESEARCH_PAGES.include?(slug)
+  end
+
   def render_guide_as_single_page?
     # /how-to-vote
     content_id == "9315bc67-33e7-42e9-8dea-e022f56dabfa" && voting_is_open?
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index c6ce899fc..ac96400fe 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -31,7 +31,14 @@
 </head>
 <body>
   <div id="wrapper" class="<%= wrapper_class %>">
-    <% if @content_item.show_phase_banner? %>
+    <% if @content_item.show_study_banner? %>
+      <%= render "govuk_publishing_components/components/intervention", {
+        suggestion_text: "Help improve GOV.UK",
+        suggestion_link_text: "Take part in user research",
+        suggestion_link_url: "https://GDSUserResearch.optimalworkshop.com/treejack/lb5eu75l",
+        new_tab: true,
+      } %>
+    <% elsif @content_item.show_phase_banner? %>
       <%= render 'govuk_publishing_components/components/phase_banner', phase: @content_item.phase %>
     <% end %>
 
diff --git a/test/integration/guide_test.rb b/test/integration/guide_test.rb
index 8bee5aa18..bc15a4356 100644
--- a/test/integration/guide_test.rb
+++ b/test/integration/guide_test.rb
@@ -169,6 +169,22 @@ class GuideTest < ActionDispatch::IntegrationTest
     assert_not page.has_css?(".gem-c-single-page-notification-button")
   end
 
+  test "does not render intervention banner by default" do
+    setup_and_visit_content_item("guide")
+
+    assert_not page.has_css?(".gem-c-intervention")
+  end
+
+  test "renders intervention banner on specific page" do
+    user_research_pages = %w[register-for-self-assessment self-employed-records income-tax-rates]
+
+    user_research_pages.each do |banner_page|
+      setup_and_visit_a_page_with_specific_base_path("guide", "/#{banner_page}")
+    end
+
+    assert page.has_css?(".gem-c-intervention")
+  end
+
   def once_voting_has_closed
     Timecop.freeze(Time.zone.local(2021, 5, 6, 22, 0, 0))
     yield