Don't use stubs for UserInfo.current_user_id because it blocks the use case where UserInfo.current_user_id is changed at runtime.

.gitlab-ci.yml

@@ -336,6 +336,7 @@ browser:build:
     paths:
     - public/assets/.sprockets-manifest*
     - public/assets/application-*
+    - public/assets/knowledge_base*
     - public/assets/print-*
 
 .services_browser_template: &services_browser_definition

.rubocop_todo.yml

@@ -86,13 +86,6 @@ Rails/HasManyOrHasOneDependent:
     - 'app/models/ticket/state_type.rb'
     - 'app/models/user.rb'
 
-# Offense count: 15
-# Configuration parameters: Include.
-# Include: app/helpers/**/*.rb
-Rails/HelperInstanceVariable:
-  Exclude:
-    - 'app/helpers/knowledge_base_helper.rb'
-
 # Offense count: 808
 Style/Documentation:
   Enabled: false

app/helpers/knowledge_base_breadcrumb_helper.rb

@@ -0,0 +1,58 @@
+module KnowledgeBaseBreadcrumbHelper
+  def render_breadcrumb_if_needed(knowledge_base, object, alternative)
+    objects = calculate_breadcrumb_path(object, alternative)
+
+    return if objects.empty?
+
+    render 'knowledge_base/public/breadcrumb',
+           {
+             objects:        objects,
+             knowledge_base: knowledge_base
+           }
+  end
+
+  def calculate_breadcrumb_path(object, alternative)
+    objects = calculate_breadcrumb_to_category(object&.parent)
+
+    last = if alternative.present? && alternative.translations.any?
+             Translation.translate(system_locale_via_uri&.locale, 'Alternative translations')
+           else
+             object
+           end
+
+    objects + [last].compact
+  end
+
+  def calculate_breadcrumb_to_category(category)
+    return [] if category.blank?
+
+    output = [category]
+
+    parent = category
+    while (parent = find_category(parent&.parent_id))
+      output << parent
+    end
+
+    output.compact.reverse
+  end
+
+  def breadcrumb_path_for(object, locale = params.fetch(:locale))
+    case object
+    when KnowledgeBase
+      help_root_path(locale: locale)
+    when KnowledgeBase::Category
+      help_category_path(object.translation, locale: locale)
+    when KnowledgeBase::Answer
+      help_answer_path(object.category.translation, object.translation, locale: locale)
+    end
+  end
+
+  def breadcrumb_text_for(object)
+    case object
+    when HasTranslations
+      object.translation.title
+    else
+      object
+    end
+  end
+end

app/helpers/knowledge_base_helper.rb

@@ -1,97 +1,11 @@
 module KnowledgeBaseHelper
-  def render_breadcrumb_if_needed
-    objects = []
+  def effective_layout_name(knowledge_base, object)
+    layout_prefix = object.present? ? :category : :homepage
 
-    if @object
-      objects += calculate_breadcrumb_to_category(@category || @object&.parent)
+    knowledge_base.send("#{layout_prefix}_layout")
   end
 
-    last = if @alternative.present? && @alternative.translations.any?
-             Translation.translate(system_locale_via_uri&.locale, 'Alternative translations')
-           else
-             @object
-           end
-
-    objects << last if last.present?
-
-    return if objects.empty?
-
-    render 'knowledge_base/public/breadcrumb',
-           {
-             objects:        objects,
-             knowledge_base: @knowledge_base
-           }
-  end
-
-  def calculate_breadcrumb_to_category(category)
-    output = [category]
-
-    parent = category
-    while (parent = find_category(parent&.parent_id))
-      output << parent
-    end
-
-    output.compact.reverse
-  end
-
-  def visibility_note(object)
-    return if !current_user&.permissions?('knowledge_base.editor')
-
-    text = visibility_text(object)
-
-    return if text.nil?
-
-    render 'knowledge_base/public/visibility_note', text: text
-  end
-
-  def visibility_text(object)
-    case object
-    when CanBePublished
-      visiblity_text_can_be_published(object)
-    when KnowledgeBase::Category
-      visiblity_text_category(object)
-    end
-  end
-
-  def visiblity_text_can_be_published(object)
-    case object.can_be_published_aasm.current_state
-    when :internal
-      'internal'
-    when :archived
-      'archived'
-    when :draft
-      'not published'
-    end
-  end
-
-  def visiblity_text_category(object)
-    return if object.public_content?
-
-    if object.self_with_children_answers.only_internal.any?
-      'hidden, visible only internally'
-    else
-      'hidden, no published answers'
-    end
-  end
-
-  def breadcrumb_path_for(object, locale = params.fetch(:locale))
-    case object
-    when KnowledgeBase
-      help_root_path(locale: locale)
-    when KnowledgeBase::Category
-      help_category_path(object.translation, locale: locale)
-    when KnowledgeBase::Answer
-      help_answer_path(object.category.translation, object.translation, locale: locale)
-    end
-  end
-
-  def effective_layout_name
-    layout_prefix = @object.present? ? :category : :homepage
-
-    @knowledge_base.send("#{layout_prefix}_layout")
-  end
-
-  def custom_path_if_needed(path, knowledge_base = @knowledge_base)
+  def custom_path_if_needed(path, knowledge_base)
     return path if knowledge_base.custom_address_matches? request
 
     prefix = knowledge_base.custom_address_uri&.path
@@ -117,43 +31,6 @@ module KnowledgeBaseHelper
     "edit #{suffix}"
   end
 
-  def kb_top_bar_tag(object)
-    case object
-    when KnowledgeBase::Answer
-      object.can_be_published_aasm.current_state
-    when KnowledgeBase::Category
-      kb_locale = object&.translation&.kb_locale
-      object.public_content?(kb_locale) ? 'Visible' : 'Invisible'
-    when KnowledgeBase
-      'Published'
-    end
-  end
-
-  def kb_top_bar_color(object)
-    case object
-    when KnowledgeBase::Answer
-      kb_answer_top_bar_color(object)
-    when KnowledgeBase::Category
-      kb_locale = object&.translation&.kb_locale
-      object.public_content?(kb_locale) ? 'green' : 'yellow'
-    when KnowledgeBase
-      'green'
-    end
-  end
-
-  def kb_answer_top_bar_color(answer)
-    case answer.can_be_published_aasm.current_state
-    when :draft
-      'yellow'
-    when :internal
-      'blue'
-    when :published
-      'green'
-    when :archived
-      'grey'
-    end
-  end
-
   def build_kb_link(object)
     locale = params.fetch(:locale, object.translation.kb_locale)
 
@@ -177,47 +54,4 @@ module KnowledgeBaseHelper
       .build(host: host, scheme: scheme, port: port, fragment: path)
       .to_s
   end
-
-  def kb_public_page_title
-    title = @knowledge_base.translation.title
-
-    if @page_title_error
-      suffix = case @page_title_error
-               when :not_found
-                 'Not Found'
-               when :alternatives
-                 'Alternative Translations'
-               end
-
-      title + " - #{zt(suffix)}"
-    elsif @object
-      title + " - #{@object.translation.title}"
-    else
-      title
-    end
-  end
-
-  def prepare_rich_text_links(input)
-    scrubber = Loofah::Scrubber.new do |node|
-      next if node.name != 'a'
-      next if !node.key? 'data-target-type'
-
-      case node['data-target-type']
-      when 'knowledge-base-answer'
-        if (translation = KnowledgeBase::Answer::Translation.find_by(id: node['data-target-id']))
-          path = help_answer_path(translation.answer.category.translation_preferred(translation.kb_locale),
-                                  translation,
-                                  locale: translation.kb_locale.system_locale.locale)
-
-          node['href'] = custom_path_if_needed path
-        else
-          node['href'] = '#'
-        end
-      end
-    end
-
-    parsed = Loofah.scrub_fragment(input, scrubber).to_s.html_safe # rubocop:disable Rails/OutputSafety
-
-    parsed
-  end
 end

app/helpers/knowledge_base_public_page_title_helper.rb

@@ -0,0 +1,21 @@
+module KnowledgeBasePublicPageTitleHelper
+  def kb_public_page_title(leading, trailing, exception)
+    [
+      leading&.translation&.title,
+      kb_public_page_title_suffix(trailing, exception)
+    ].compact.join(' - ')
+  end
+
+  def kb_public_page_title_suffix(item, exception)
+    return item&.translation&.title if exception.blank?
+
+    suffix = case exception
+             when :not_found
+               'Not Found'
+             when :alternatives
+               'Alternative Translations'
+             end
+
+    zt(suffix)
+  end
+end

app/helpers/knowledge_base_rich_text_helper.rb

@@ -0,0 +1,25 @@
+module KnowledgeBaseRichTextHelper
+  def prepare_rich_text_links(input)
+    scrubber = Loofah::Scrubber.new do |node|
+      next if node.name != 'a'
+      next if !node.key? 'data-target-type'
+
+      case node['data-target-type']
+      when 'knowledge-base-answer'
+        if (translation = KnowledgeBase::Answer::Translation.find_by(id: node['data-target-id']))
+          path = help_answer_path(translation.answer.category.translation_preferred(translation.kb_locale),
+                                  translation,
+                                  locale: translation.kb_locale.system_locale.locale)
+
+          node['href'] = custom_path_if_needed path, translation.kb_locale.knowledge_base
+        else
+          node['href'] = '#'
+        end
+      end
+    end
+
+    parsed = Loofah.scrub_fragment(input, scrubber).to_s.html_safe # rubocop:disable Rails/OutputSafety
+
+    parsed
+  end
+end

app/helpers/knowledge_base_top_bar_helper.rb

@@ -0,0 +1,38 @@
+module KnowledgeBaseTopBarHelper
+  def kb_top_bar_color(object)
+    case object
+    when KnowledgeBase::Answer
+      kb_answer_top_bar_color(object)
+    when KnowledgeBase::Category
+      kb_locale = object&.translation&.kb_locale
+      object.public_content?(kb_locale) ? 'green' : 'yellow'
+    when KnowledgeBase
+      'green'
+    end
+  end
+
+  def kb_answer_top_bar_color(answer)
+    case answer.can_be_published_aasm.current_state
+    when :draft
+      'yellow'
+    when :internal
+      'blue'
+    when :published
+      'green'
+    when :archived
+      'grey'
+    end
+  end
+
+  def kb_top_bar_tag(object)
+    case object
+    when KnowledgeBase::Answer
+      object.can_be_published_aasm.current_state
+    when KnowledgeBase::Category
+      kb_locale = object&.translation&.kb_locale
+      object.public_content?(kb_locale) ? 'Visible' : 'Invisible'
+    when KnowledgeBase
+      'Published'
+    end
+  end
+end

app/helpers/knowledge_base_visibility_note_helper.rb

@@ -0,0 +1,41 @@
+module KnowledgeBaseVisibilityNoteHelper
+  def visibility_note(object)
+    return if !current_user&.permissions?('knowledge_base.editor')
+
+    text = visibility_text(object)
+
+    return if text.nil?
+
+    render 'knowledge_base/public/visibility_note', text: text
+  end
+
+  def visibility_text(object)
+    case object
+    when CanBePublished
+      visiblity_text_can_be_published(object)
+    when KnowledgeBase::Category
+      visiblity_text_category(object)
+    end
+  end
+
+  def visiblity_text_can_be_published(object)
+    case object.can_be_published_aasm.current_state
+    when :internal
+      'internal'
+    when :archived
+      'archived'
+    when :draft
+      'not published'
+    end
+  end
+
+  def visiblity_text_category(object)
+    return if object.public_content?
+
+    if object.self_with_children_answers.only_internal.any?
+      'hidden, visible only internally'
+    else
+      'hidden, no published answers'
+    end
+  end
+end

app/models/knowledge_base/answer.rb

@@ -18,6 +18,9 @@ class KnowledgeBase::Answer < ApplicationModel
 
   validates :category, presence: true
 
+  # provide consistent naming with KB category
+  alias_attribute :parent, :category
+
   alias assets_essential assets
 
   def attributes_with_association_ids

app/views/knowledge_base/public/_breadcrumb.html.erb

@@ -1,11 +1,11 @@
 <nav class="breadcrumbs">
   <div class="container">
     <% ([knowledge_base] + objects).each do |object| %>
-      <%= link_to custom_path_if_needed(breadcrumb_path_for(object)), class: :breadcrumb do %>
+      <%= link_to custom_path_if_needed(breadcrumb_path_for(object), knowledge_base), class: :breadcrumb do %>
         <%= icon_for_object(object, knowledge_base.iconset) %>
 
         <span>
-          <%= object.translation.title %>
+          <%= breadcrumb_text_for(object) %>
         </span>
       <% end %>
     <% end %>

app/views/knowledge_base/public/answers/show.html.erb

@@ -1,5 +1,5 @@
 <main class="main main--article"
-data-base-path='<%= custom_path_if_needed help_answer_path(@category, @object, locale: '{locale}') %>'
+data-base-path='<%= custom_path_if_needed help_answer_path(@category, @object, locale: '{locale}'), @knowledge_base %>'
 data-available-locales='<%= @object_locales.map(&:locale).join(',') %>'>
   <article class="article">
     <div class="container">
@@ -16,7 +16,7 @@ data-available-locales='<%= @object_locales.map(&:locale).join(',') %>'>
           <%= icon 'paperclip' %>
           <div class="attachments-title"><%= zt('Attached Files') %></div>
           <% attachments.each do |attachment| %>
-            <%= link_to custom_path_if_needed(attachment_path(attachment)), class: 'attachment', download: true do %>
+            <%= link_to custom_path_if_needed(attachment_path(attachment), @knowledge_base), class: 'attachment', download: true do %>
               <span class="attachment-name u-highlight"><%= attachment.filename %></span>
               <div class="attachment-size">404kb</div>
             <% end %>

app/views/knowledge_base/public/categories/_answer.html.erb

@@ -1,4 +1,4 @@
-<%= link_to custom_path_if_needed help_answer_path(answer.category.translation, answer.translation, locale: params[:locale]) do %>
+<%= link_to custom_path_if_needed help_answer_path(answer.category.translation, answer.translation, locale: params[:locale]), @knowledge_base do %>
   <span class="section-inner">
     <%= icon('knowledge-base-answer') %>
   	<%= answer.translation.title %> <%= visibility_note(answer) %>

app/views/knowledge_base/public/categories/_category.html.erb

@@ -1,5 +1,5 @@
 <li class="section <%= visibility_class_name(category) %>">
-  <%= link_to custom_path_if_needed help_category_path(category.translation, locale: params[:locale]) do %>
+  <%= link_to custom_path_if_needed help_category_path(category.translation, locale: params[:locale]), @knowledge_base do %>
     <span class="section-inner">
       <%= icon(category.category_icon, knowledge_base.iconset) %>
       <span><%= category.translation.title %></span>

app/views/knowledge_base/public/categories/index.html.erb

@@ -1,6 +1,6 @@
 <main class="main main--categories"
   <% if @object %>
-    data-base-path='<%= custom_path_if_needed help_category_path(@object, locale: '{locale}') %>'
+    data-base-path='<%= custom_path_if_needed help_category_path(@object, locale: '{locale}'), @knowledge_base %>'
     data-available-locales='<%= @object_locales.map(&:locale).join(',') %>'
   <% end %>>
   <div class="container">
@@ -19,7 +19,7 @@
       </div>
     <% else %>
       <% if @categories&.present? %>
-        <ul class="sections sections--<%= effective_layout_name %>" data-less-than-four="<%= @categories.length < 4 %>">
+        <ul class="sections sections--<%= effective_layout_name(@knowledge_base, @object) %>" data-less-than-four="<%= @categories.length < 4 %>">
           <% @categories.each do |category| %>
             <%= render 'category', { category: category, knowledge_base: @knowledge_base } %>
           <% end %>

app/views/knowledge_base/public/not_found.html.erb

@@ -4,7 +4,7 @@
     <h1><%= zt('Page not found') %></h1>
     <p>
       <%= zt('The page you were looking for does not exist.') %>
-      <%= link_to zt('Click here'), custom_path_if_needed(help_root_path(locale: fallback_locale.locale)) %>
+      <%= link_to zt('Click here'), custom_path_if_needed(help_root_path(locale: fallback_locale.locale), @knowledge_base) %>
       <%= zt('to go to the homepage.') %>
     </p>
   </div>

app/views/knowledge_base/public/show_alternatives.html.erb

@@ -7,7 +7,7 @@
       <% @alternative.translations.each do |translation| %>
         <li>
           <%= translation.kb_locale.system_locale.name %>:
-          <%= link_to translation.title, custom_path_if_needed(url_for(locale: translation_locale_code(translation))) %>
+          <%= link_to translation.title, custom_path_if_needed(url_for(locale: translation_locale_code(translation)), @knowledge_base) %>
         </li>
       <% end %>
     </ul>

app/views/layouts/knowledge_base.html.erb

@@ -3,11 +3,11 @@
       data-id='<%= @knowledge_base.id %>'
       data-iconset='<%= @knowledge_base.iconset %>'
       data-available-locales='<%= all_locales.map(&:locale).join(',') %>'
-      data-base-path='<%= custom_path_if_needed help_root_path(locale: '{locale}') %>'
+      data-base-path='<%= custom_path_if_needed help_root_path(locale: '{locale}'), @knowledge_base %>'
       data-primary-locale="<%= (filter_primary_kb_locale || all_locales.first)&.locale %>">
 
 <meta charset="utf-8">
-<title><%= kb_public_page_title %></title>
+<title><%= kb_public_page_title(@knowledge_base, @object, @page_title_error) %></title>
 <meta name="viewport" content="width=device-width,initial-scale=1.0,viewport-fit=cover">
 <%= stylesheet_link_tag "knowledge_base.css", :media => 'all' %>
 <%= render 'knowledge_base/public/inline_stylesheet', knowledge_base: @knowledge_base %>
@@ -18,7 +18,7 @@
   <header class="header js-header">
     <div class="container">
       <h1 class="logo">
-        <%= link_to custom_path_if_needed(help_root_path(locale: params[:locale])) do %>
+        <%= link_to custom_path_if_needed(help_root_path(locale: params[:locale]), @knowledge_base) do %>
           <img src="/assets/images/<%= Setting.get('product_logo') %>">
         <% end %>
       </h1>
@@ -39,7 +39,7 @@
     </div>
   </header>
 
-  <%= render_breadcrumb_if_needed %>
+  <%= render_breadcrumb_if_needed(@knowledge_base, @object, @alternative) %>
 
   <%= yield %>
 
@@ -57,7 +57,7 @@
           <ul class="dropdown-menu dropdown-menu-right dropdown-menu-up" role="menu">
             <% @object_locales&.each do |locale| %>
               <li class="<%= 'is-selected' if locale.name == system_locale_via_uri.name %>">
-                <%= link_to custom_path_if_needed(url_for(locale: locale.locale)), hreflang: locale.locale do %>
+                <%= link_to custom_path_if_needed(url_for(locale: locale.locale), @knowledge_base), hreflang: locale.locale do %>
                   <%= icon 'checkmark' %>
                   <%= locale.name %>
                 <% end %>

spec/factories/knowledge_base.rb

@@ -16,7 +16,7 @@ FactoryBot.define do
       end
 
       if kb.kb_locales.blank?
-        kb.kb_locales << build(:knowledge_base_locale, knowledge_base: kb)
+        kb.kb_locales << build(:knowledge_base_locale, knowledge_base: kb, primary: true)
       end
     end
   end

spec/factories/knowledge_base/answer.rb

@@ -1,5 +1,11 @@
 FactoryBot.define do
   factory 'knowledge_base/answer', aliases: %i[knowledge_base_answer] do
     category { create(:knowledge_base_category) }
+
+    before(:create) do |answer|
+      next if answer.translations.present?
+
+      answer.translations << build('knowledge_base/answer/translation', answer: answer)
+    end
   end
 end

spec/factories/knowledge_base/answer/translation.rb

@@ -2,12 +2,25 @@ FactoryBot.define do
   factory 'knowledge_base/answer/translation', aliases: %i[knowledge_base_answer_translation] do
     answer           { nil }
     kb_locale        { nil }
-    title     { Faker::Appliance.equipment }
+    sequence(:title) { |n| "#{Faker::Appliance.equipment} ##{n}" }
     content          { build(:knowledge_base_answer_translation_content) }
 
-    before(:create) do |translation|
-      if translation.answer.nil? && translation.kb_locale.nil?
-        translation.answer = create(:knowledge_base_answer)
+    before(:create) do |translation, _context|
+      if translation.answer.nil?
+        build(:knowledge_base_answer, translations: [translation])
+      end
+
+      if translation.kb_locale.nil?
+        translation.kb_locale = translation.answer.category.knowledge_base.kb_locales.first
+      end
+    end
+
+    after(:build) do |translation, _context|
+      if translation.answer.nil?
+        build(:knowledge_base_answer, translations: [translation])
+      end
+
+      if translation.kb_locale.nil?
         translation.kb_locale = translation.answer.category.knowledge_base.kb_locales.first
       end
     end

spec/factories/knowledge_base/answer/translation/content.rb

@@ -5,7 +5,7 @@ FactoryBot.define do
 
     before(:create) do |content|
       if content.translation.nil?
-        content.translation = create(:knowledge_base_answer_translation)
+        create(:knowledge_base_answer_translation, content: content)
       end
     end
   end

spec/factories/knowledge_base/category.rb

@@ -2,6 +2,12 @@ FactoryBot.define do
   factory 'knowledge_base/category', aliases: %i[knowledge_base_category] do
     knowledge_base { parent&.knowledge_base || create(:knowledge_base) }
     category_icon  { 'f04b' }
+
+    before(:create) do |category|
+      next if category.translations.present?
+
+      category.translations << create('knowledge_base/category/translation', category: category)
+    end
   end
 
   factory 'kb_category_with_tree', parent: 'knowledge_base/category' do

spec/factories/knowledge_base/category/translation.rb

@@ -1,14 +1,30 @@
 FactoryBot.define do
   factory 'knowledge_base/category/translation', aliases: %i[knowledge_base_category_translation] do
+    transient do
+      knowledge_base  { nil }
+      parent_category { nil }
+    end
+
     category         { nil }
     kb_locale        { nil }
-    title     { Faker::Appliance.brand }
+    sequence(:title) { |n| "#{Faker::Appliance.brand} ##{n}" }
 
-    before(:create) do |translation|
-      if translation.category.nil? && translation.kb_locale.nil?
-        translation.category = create(:knowledge_base_category)
-        translation.kb_locale = translation.category.knowledge_base.kb_locales.first
-      end
+    before(:create) do |translation, context|
+      if translation.category.nil?
+        attrs = if context.parent_category
+                  { parent: context.parent_category }
+                elsif context.knowledge_base
+                  { knowledge_base: context.knowledge_base }
+                else
+                  {}
+                end
+
+        attrs[:translations] = [translation]
+
+        build(:knowledge_base_category, attrs)
+      end
+
+      translation.kb_locale = translation.category.knowledge_base.kb_locales.first if translation.kb_locale.nil?
     end
   end
 end

spec/factories/knowledge_base/translation.rb

@@ -3,5 +3,6 @@ FactoryBot.define do
     knowledge_base { kb_locale.knowledge_base }
     kb_locale      { nil }
     title          { Faker::Company.name }
+    footer_note    { 'footer' }
   end
 end

spec/models/knowledge_base/answer/translation/content_spec.rb

@@ -1,11 +1,9 @@
 require 'rails_helper'
 require 'models/contexts/factory_context'
 
-RSpec.describe KnowledgeBase::Answer::Translation::Content, type: :model do
+RSpec.describe KnowledgeBase::Answer::Translation::Content, type: :model, current_user_id: 1 do
   subject { create(:knowledge_base_answer_translation_content) }
 
-  before { UserInfo.current_user_id = 1 }
-
   include_context 'factory'
 
   it { is_expected.to have_one(:translation) }

spec/models/knowledge_base/answer/translation_spec.rb

@@ -1,11 +1,9 @@
 require 'rails_helper'
 require 'models/contexts/factory_context'
 
-RSpec.describe KnowledgeBase::Answer::Translation, type: :model do
+RSpec.describe KnowledgeBase::Answer::Translation, type: :model, current_user_id: 1 do
   subject { create(:knowledge_base_answer_translation) }
 
-  before { UserInfo.current_user_id = 1 }
-
   include_context 'factory'
 
   it { is_expected.to validate_presence_of(:title) }

spec/models/knowledge_base/answer_spec.rb

@@ -2,7 +2,7 @@ require 'rails_helper'
 require 'models/concerns/checks_kb_client_notification_examples'
 require 'models/contexts/factory_context'
 
-RSpec.describe KnowledgeBase::Answer, type: :model do
+RSpec.describe KnowledgeBase::Answer, type: :model, current_user_id: 1 do
   subject!(:kb_answer) { create(:knowledge_base_answer) }
 
   include_context 'factory'

spec/models/knowledge_base/category_spec.rb

@@ -2,7 +2,7 @@ require 'rails_helper'
 require 'models/concerns/checks_kb_client_notification_examples'
 require 'models/contexts/factory_context'
 
-RSpec.describe KnowledgeBase::Category, type: :model do
+RSpec.describe KnowledgeBase::Category, type: :model, current_user_id: 1 do
   subject(:kb_category) { create(:knowledge_base_category) }
 
   include_context 'factory'

spec/support/capybara/selectors.rb

@@ -35,3 +35,22 @@ end
 Capybara.add_selector(:table_row) do
   css { |id| %(tr[data-id='#{id}']) }
 end
+
+Capybara.add_selector(:link_containing) do
+  xpath { |text| ".//a//*[text()[contains(.,\"#{text}\")]]" }
+end
+
+# Knowledge Base
+Capybara.add_selector(:knowledge_base_editor_bar) do
+  css { '.topbar' }
+end
+
+Capybara.add_selector(:knowledge_base_language_banner) do
+  css { '.language-banner' }
+end
+
+# don't use "knowledge_base" prefix because breadcrumbs
+# could be available in other contexts (in the future)
+Capybara.add_selector(:breadcrumb) do
+  css { '.breadcrumbs .breadcrumb span' }
+end

spec/support/knowledge_base_contexts.rb

@@ -0,0 +1,35 @@
+RSpec.shared_context 'Knowledge Base users' do
+  let(:admin_user) { create :admin_user    }
+  let(:agent_user) { create :agent_user    }
+  let(:customer_user)   { create :customer_user }
+end
+
+RSpec.shared_context 'basic Knowledge Base', current_user_id: 1 do
+  let :knowledge_base do
+    create(:knowledge_base)
+  end
+
+  let :primary_locale do
+    knowledge_base.translation_primary.kb_locale
+  end
+
+  let :alternative_locale do
+    create(:knowledge_base_locale, knowledge_base: knowledge_base, system_locale: Locale.find_by(locale: 'lt'))
+  end
+
+  let :category do
+    create(:knowledge_base_category, knowledge_base: knowledge_base)
+  end
+
+  let :answer do
+    create(:knowledge_base_answer, category: category)
+  end
+
+  let :published_answer do
+    create(:knowledge_base_answer, category: category, published_at: 1.week.ago)
+  end
+
+  let :internal_answer do
+    create(:knowledge_base_answer, category: category, internal_at: 1.week.ago)
+  end
+end

spec/support/user_info.rb

@@ -1,37 +1,19 @@
-# This module registers a before and after each hook callback that
+# This file registers a before and after each hook callback that
 # resets the stored current_user_id in the UserInfo which will otherwise
 # persists across multiple examples.
 # This can lead to issues where actions were performed by a user created
 # via a FactoryBot factory which will get removed after the example is
 # completed. The UserInfo.current_user_id will persist which leads to e.g.
 # DB ForeignKey violation errors.
-module ZammadSpecSupportUserInfo
-
-  def self.included(base)
-
-    # Execute in RSpec class context
-    base.class_exec do
-
-      before(:each) do |_example|
-        UserInfo.current_user_id = nil
-      end
-
-      after(:each) do |_example|
-        UserInfo.current_user_id = nil
-      end
-    end
-  end
-end
-
+# If a `:current_user_id` metadata argument is set the initial value for
+# UserInfo.current_user_id will be set to the arguments given value
 RSpec.configure do |config|
-  config.include ZammadSpecSupportUserInfo
 
-  config.around(:each, :current_user_id) do |example|
+  config.before(:each) do |example|
     UserInfo.current_user_id = example.metadata[:current_user_id]
-    begin
-      example.run
-    ensure
+  end
+
+  config.after(:each) do |_example|
     UserInfo.current_user_id = nil
   end
 end
-end

spec/system/knowledge_base_public/editor_spec.rb

@@ -0,0 +1,42 @@
+require 'rails_helper'
+
+RSpec.describe 'Public Knowledge Base for editor', type: :system, authenticated: true do
+  include_context 'basic Knowledge Base'
+
+  before do
+    published_answer && answer && internal_answer
+  end
+
+  context 'homepage' do
+    before { visit help_no_locale_path }
+
+    it { expect(page).to have_selector(:knowledge_base_editor_bar) }
+
+    it 'expect to have edit button' do
+      button = find '.topbar-btn'
+      expect(button['href']).to match(/edit$/)
+    end
+  end
+
+  context 'category' do
+    before { visit help_category_path(primary_locale.system_locale.locale, category) }
+
+    it 'shows published answer' do
+      within '.main' do
+        expect(page).to have_selector(:link_containing, published_answer.translation.title)
+      end
+    end
+
+    it 'shows draft answer' do
+      within '.main' do
+        expect(page).to have_selector(:link_containing, answer.translation.title)
+      end
+    end
+
+    it 'shows internal answer' do
+      within '.main' do
+        expect(page).to have_selector(:link_containing, internal_answer.translation.title)
+      end
+    end
+  end
+end

spec/system/knowledge_base_public/guest_spec.rb

@@ -0,0 +1,110 @@
+require 'rails_helper'
+
+RSpec.describe 'Public Knowledge Base for guest', type: :system, authenticated: false do
+  include_context 'basic Knowledge Base'
+
+  before do
+    published_answer && answer && internal_answer
+  end
+
+  context 'homepage' do
+    before { visit help_no_locale_path }
+
+    it('is redirected to primary locale') { expect(page).to have_current_path help_root_path(primary_locale.system_locale.locale) }
+
+    it { expect(page).not_to have_selector(:breadcrumb) }
+    it { expect(page).not_to have_selector(:knowledge_base_editor_bar) }
+
+    it 'shows category' do
+      within '.main' do
+        expect(page).to have_selector(:link_containing, published_answer.category.translation.title)
+      end
+    end
+
+    it 'does not show answer' do
+      within '.main' do
+        expect(page).not_to have_selector(:link_containing, published_answer.translation.title)
+      end
+    end
+  end
+
+  context 'category' do
+    before { visit help_category_path(primary_locale.system_locale.locale, category) }
+
+    it { expect(page).to have_selector(:breadcrumb) }
+
+    it 'shows published answer' do
+      within '.main' do
+        expect(page).to have_selector(:link_containing, published_answer.translation.title)
+      end
+    end
+
+    it 'does not show draft answer' do
+      within '.main' do
+        expect(page).not_to have_selector(:link_containing, answer.translation.title)
+      end
+    end
+
+    it 'does not show internal answer' do
+      within '.main' do
+        expect(page).not_to have_selector(:link_containing, internal_answer.translation.title)
+      end
+    end
+
+    context 'breadcrumb' do
+      it { expect(page).to have_selector(:breadcrumb, count: 2) }
+      it { expect(page.all(:breadcrumb)[0]).to have_text(knowledge_base.translation.title) }
+      it { expect(page.all(:breadcrumb)[1]).to have_text(category.translation.title) }
+    end
+  end
+
+  context 'answer' do
+    before { visit help_answer_path(primary_locale.system_locale.locale, category, published_answer) }
+
+    context 'breadcrumb' do
+      it { expect(page).to have_selector(:breadcrumb, count: 3) }
+      it { expect(page.all(:breadcrumb)[0]).to have_text(knowledge_base.translation.title) }
+      it { expect(page.all(:breadcrumb)[1]).to have_text(category.translation.title) }
+      it { expect(page.all(:breadcrumb)[2]).to have_text(published_answer.translation.title) }
+    end
+  end
+
+  context 'wrong locale' do
+    before { visit help_root_path(alternative_locale.system_locale.locale) }
+
+    it { expect(page).to have_selector(:knowledge_base_language_banner) }
+
+    context 'switch to correct locale after clicking on language banner' do
+      before do
+        within '.language-banner' do
+          click_on 'activate'
+        end
+      end
+
+      it { expect(page).not_to have_selector(:knowledge_base_language_banner) }
+    end
+  end
+
+  context 'offer in another locale' do
+    before do
+      create(:knowledge_base_translation, kb_locale: alternative_locale)
+      visit help_answer_path(alternative_locale.system_locale.locale, category, published_answer)
+    end
+
+    it { expect(page).to have_text(published_answer.translation_primary.title) }
+    it { expect(page).to have_text('only available in these languages') }
+    it { expect(page).not_to have_selector('h1', text: published_answer.translation_primary.title) }
+
+    context 'follow primary locale' do
+      before { click_on published_answer.translation_primary.title }
+
+      it { expect(page).to have_selector('h1', text: published_answer.translation_primary.title) }
+    end
+  end
+
+  context '404' do
+    before { visit help_answer_path(primary_locale.system_locale.locale, category, 12_345) }
+
+    it { expect(page).to have_text('Page not found') }
+  end
+end