Fix Elasticsearch search for wiki: guest should be able to search through wikis

app/helpers/search_helper.rb

@@ -42,6 +42,12 @@ module SearchHelper
     Project.find(blob['_parent'])
   end
   
+  def show_notes_tab?
+    [:read_merge_request, :download_code, :read_issue, :read_project_snippet].any? do |ability|
+      can?(current_user, :read_merge_request, @project)
+    end
+  end
+
   private
 
   # Autocomplete results for various settings pages

app/views/search/_category.html.haml

@@ -27,7 +27,7 @@
             Milestones
             %span.badge
               = @search_results.milestones_count
-      - if can?(current_user, :read_merge_request, @project) || can?(current_user, :read_issue, @project)
+      - if show_notes_tab?
         %li{ class: active_when(@scope == 'notes') }
           = link_to search_filter_path(scope: 'notes') do
             Comments

lib/gitlab/elastic/search_results.rb

@@ -187,19 +187,21 @@ module Gitlab
       end
 
       def wiki_filter
-        blob_filter(:wiki_access_level)
+        blob_filter(:wiki_access_level, visible_for_guests: true)
       end
 
       def repository_filter
         blob_filter(:repository_access_level)
       end
 
-      def blob_filter(project_feature_name)
+      def blob_filter(project_feature_name, visible_for_guests: false)
+        project_ids = visible_for_guests ? limit_project_ids : non_guest_project_ids
+
         conditions =
-          if non_guest_project_ids == :any
+          if project_ids == :any
             [{ exists: { field: "id" } }]
           else
-            [{ terms: { id: non_guest_project_ids } }]
+            [{ terms: { id: project_ids } }]
           end
 
         if public_and_internal_projects

spec/elastic_integration/global_search_spec.rb

 require 'spec_helper'
 
 describe 'GlobalSearch' do
-  let(:features) { %i(issues merge_requests repository builds) }
+  let(:features) { %i(issues merge_requests repository builds wiki) }
   let(:admin) { create :user, admin: true }
   let(:auditor) {create :user, auditor: true }
   let(:non_member) { create :user }
@@ -130,11 +130,13 @@ describe 'GlobalSearch' do
     Sidekiq::Testing.inline! do
       create :issue, title: 'term', project: project
       create :merge_request, title: 'term', target_project: project, source_project: project
+      project.wiki.create_page('index_page', 'term')
 
       project.project_feature.update!(feature_settings) if feature_settings
 
       project.repository.index_blobs
       project.repository.index_commits
+      project.wiki.index_blobs
 
       Gitlab::Elastic::Helper.refresh_index
     end
@@ -149,6 +151,7 @@ describe 'GlobalSearch' do
     results = search(user, 'term')
     expect(results.issues_count).to eq(0)
     expect(results.merge_requests_count).to eq(0)
+    expect(results.wiki_blobs_count).to eq(0)
     expect(search(user, 'def').blobs_count).to eq(0)
     expect(search(user, 'add').commits_count).to eq(0)
   end
@@ -157,6 +160,7 @@ describe 'GlobalSearch' do
     results = search(user, 'term')
     expect(results.issues_count).not_to eq(0)
     expect(results.merge_requests_count).not_to eq(0)
+    expect(results.wiki_blobs_count).not_to eq(0)
     expect(search(user, 'def').blobs_count).not_to eq(0)
     expect(search(user, 'add').commits_count).not_to eq(0)
   end
@@ -164,6 +168,7 @@ describe 'GlobalSearch' do
   def expect_non_code_items_to_be_found(user)
     results = search(guest, 'term')
     expect(results.issues_count).not_to eq(0)
+    expect(results.wiki_blobs_count).not_to eq(0)
     expect(results.merge_requests_count).to eq(0)
     expect(search(guest, 'def').blobs_count).to eq(0)
     expect(search(guest, 'add').commits_count).to eq(0)

spec/lib/gitlab/elastic/project_search_results_spec.rb

@@ -66,7 +66,7 @@ describe Gitlab::Elastic::ProjectSearchResults, lib: true do
       it 'shows wiki for guests' do
         project = create :empty_project, :public
         guest = create :user
-        project.team << [guest, :guest]
+        project.add_guest(guest)
 
         # Wiki
         project.wiki.create_page('index_page', 'term')

spec/lib/gitlab/elastic/search_results_spec.rb

@@ -419,6 +419,14 @@ describe Gitlab::Elastic::SearchResults, lib: true do
       expect(results.wiki_blobs_count).to eq 1
     end
 
+    it 'finds wiki blobs for guest' do
+      project_1.add_guest(user)
+      blobs = results.objects('wiki_blobs')
+
+      expect(blobs.first["_source"]["blob"]["content"]).to include("term")
+      expect(results.wiki_blobs_count).to eq 1
+    end
+
     it 'finds wiki blobs from public projects only' do
       project_2 = create :project, :private
       project_2.wiki.create_page('index_page', 'term')

spec/services/search_service_spec.rb

@@ -29,7 +29,7 @@ describe SearchService, services: true do
 
       it 'returns the project for guests' do
         search_project = create :empty_project
-        search_project.team << [user, :guest]
+        search_project.add_guest(user)
 
         project = SearchService.new(user, project_id: search_project.id).project