Merge branch 'jprovazn-search-issues' into 'master'

Skip projects filter on issues search

See merge request gitlab-org/gitlab-ce!16117

changelogs/unreleased/16117-improve-search-for-issues.yml

+---
+title: Improve search query for issues.
+merge_request:
+author:
+type: performance

lib/gitlab/search_results.rb

@@ -82,7 +82,10 @@ module Gitlab
     end
 
     def issues
-      issues = IssuesFinder.new(current_user).execute.where(project_id: project_ids_relation)
+      issues = IssuesFinder.new(current_user).execute
+      unless default_project_filter
+        issues = issues.where(project_id: project_ids_relation)
+      end
 
       issues =
         if query =~ /#(\d+)\z/

spec/lib/gitlab/search_results_spec.rb

@@ -52,18 +52,39 @@ describe Gitlab::SearchResults do
       expect(results.objects('merge_requests')).to include merge_request_2
     end
 
+    describe '#merge_requests' do
       it 'includes project filter by default' do
         expect(results).to receive(:project_ids_relation).and_call_original
+
         results.objects('merge_requests')
       end
 
-    it 'it skips project filter if default is used' do
+      it 'it skips project filter if default project context is used' do
         allow(results).to receive(:default_project_filter).and_return(true)
+
         expect(results).not_to receive(:project_ids_relation)
+
         results.objects('merge_requests')
       end
     end
 
+    describe '#issues' do
+      it 'includes project filter by default' do
+        expect(results).to receive(:project_ids_relation).and_call_original
+
+        results.objects('issues')
+      end
+
+      it 'it skips project filter if default project context is used' do
+        allow(results).to receive(:default_project_filter).and_return(true)
+
+        expect(results).not_to receive(:project_ids_relation)
+
+        results.objects('issues')
+      end
+    end
+  end
+
   it 'does not list issues on private projects' do
     private_project = create(:project, :private)
     issue = create(:issue, project: private_project, title: 'foo')