Merge branch '8013-race' into 'master'

Spec for checking race condition of initial push not being indexed

See merge request gitlab-org/gitlab-ee!14132

ee/spec/elastic_integration/repository_index_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'Repository index', :elastic do
+  context 'when fresh master branch is first pushed, followed by another update, then indexed' do
+    let(:project) { create(:project_empty_repo) }
+    let(:user) { project.owner }
+
+    before do
+      stub_ee_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+      ElasticIndexerWorker.new.perform("index", "Project", project.id, project.es_id)
+    end
+
+    it 'indexes initial push' do
+      sha1 = project.repository.create_file(user, '12', '', message: '12', branch_name: 'master')
+      project.repository.create_file(user, '23', '', message: '23', branch_name: 'master')
+
+      Gitlab::Elastic::Indexer.new(project).run(sha1)
+      Gitlab::Elastic::Helper.refresh_index
+
+      expect(indexed_file_paths_for('12')).to include('12')
+    end
+
+    def indexed_file_paths_for(term)
+      blobs = Repository.search(term, type: :blob)[:blobs][:results].response
+      blobs.map do |blob|
+        blob['_source']['blob']['path']
+      end
+    end
+  end
+end