Search: Add feature flags for global tabs

app/views/search/_category.html.haml

@@ -27,11 +27,11 @@
       = search_filter_link 'snippet_titles', _("Titles and Descriptions"), search: { snippets: true, group_id: nil, project_id: nil }
     - else
       = search_filter_link 'projects', _("Projects"), data: { qa_selector: 'projects_tab' }
-      = render_if_exists 'search/category_code'
+      = render_if_exists 'search/category_code' if @group || Feature.enabled?(:global_search_code_tab, current_user, type: :ops, default_enabled: true)
       = render_if_exists 'search/epics_filter_link'
-      = search_filter_link 'issues', _("Issues")
-      = search_filter_link 'merge_requests', _("Merge requests")
-      = render_if_exists 'search/category_wiki'
+      = search_filter_link 'issues', _("Issues") if @group || Feature.enabled?(:global_search_issues_tab, current_user, type: :ops, default_enabled: true)
+      = search_filter_link 'merge_requests', _("Merge requests") if @group || Feature.enabled?(:global_search_merge_requests_tab, current_user, type: :ops, default_enabled: true)
+      = render_if_exists 'search/category_wiki' if @group || Feature.enabled?(:global_search_wiki_tab, current_user, type: :ops, default_enabled: true)
       = render_if_exists 'search/category_elasticsearch'
       = search_filter_link 'milestones', _("Milestones")
       = users

config/feature_flags/ops/global_search_code_tab.yml

+---
+name: global_search_code_tab
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68640
+rollout_issue_url: 
+milestone: '14.3'
+type: ops
+group: group::global search
+default_enabled: true

config/feature_flags/ops/global_search_commits_tab.yml

+---
+name: global_search_commits_tab
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68640
+rollout_issue_url: 
+milestone: '14.3'
+type: ops
+group: group::global search
+default_enabled: true

config/feature_flags/ops/global_search_issues_tab.yml

+---
+name: global_search_issues_tab
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68640
+rollout_issue_url: 
+milestone: '14.3'
+type: ops
+group: group::global search
+default_enabled: true

config/feature_flags/ops/global_search_merge_requests_tab.yml

+---
+name: global_search_merge_requests_tab
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68640
+rollout_issue_url: 
+milestone: '14.3'
+type: ops
+group: group::global search
+default_enabled: true

config/feature_flags/ops/global_search_wiki_tab.yml

+---
+name: global_search_wiki_tab
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68640
+rollout_issue_url: 
+milestone: '14.3'
+type: ops
+group: group::global search
+default_enabled: true

ee/app/views/search/_category_elasticsearch.html.haml

 - if search_service.show_elasticsearch_tabs?
-  = search_filter_link 'commits', _("Commits")
+  = search_filter_link 'commits', _("Commits") if @group || Feature.enabled?(:global_search_commits_tab, current_user, type: :ops, default_enabled: true)
   = search_filter_link 'notes', _("Comments")

ee/spec/views/search/_category.html.haml_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'search/_category' do
+  let_it_be(:group) { create(:group) }
+
+  context 'feature flags' do
+    using RSpec::Parameterized::TableSyntax
+
+    before do
+      stub_ee_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    end
+
+    where(:feature_flag, :tab_name) do
+      :global_search_code_tab           | 'Code'
+      :global_search_issues_tab         | 'Issues'
+      :global_search_merge_requests_tab | 'Merge requests'
+      :global_search_wiki_tab           | 'Wiki'
+      :global_search_commits_tab        | 'Commits'
+    end
+
+    with_them do
+      context 'global search' do
+        it 'shows the tab if FF is enabled' do
+          stub_feature_flags(feature_flag => true)
+
+          render
+
+          expect(rendered).to have_selector('.nav-tabs li', text: tab_name)
+        end
+
+        it 'hides the tab if FF is disabled' do
+          stub_feature_flags(feature_flag => false)
+
+          render
+
+          expect(rendered).not_to have_selector('.nav-tabs li', text: tab_name)
+        end
+      end
+
+      context 'group search' do
+        before do
+          assign(:group, group)
+        end
+
+        it 'shows the tab even if FF is disabled for group search' do
+          stub_feature_flags(feature_flag => false)
+
+          render
+
+          expect(rendered).to have_selector('.nav-tabs li', text: tab_name)
+        end
+      end
+    end
+  end
+end