Return no scanners when pipeline has no reports

ee/app/models/concerns/ee/project_security_scanners_information.rb

@@ -15,6 +15,8 @@ module EE
 
     def scanners_run_in_last_pipeline
       reports = latest_builds_reports(only_successful_builds: true)
+      return [] if reports.empty?
+
       all_security_scanners.map { |scanner| scanner.upcase.to_s if reports.include?(scanner) }.compact
     end
 

ee/changelogs/unreleased/230825-follow-up-scanner-type-enum.yml

+---
+title: Return empty scanners list when pipeline has no reports
+merge_request: 41652
+author:
+type: performance

ee/spec/models/concerns/ee/project_security_scanners_information_spec.rb

@@ -32,12 +32,20 @@ RSpec.describe ::EE::ProjectSecurityScannersInformation do
   end
 
   describe '#scanners_run_by_last_pipeline' do
+    subject(:scanners_run_in_last_pipeline) { project.scanners_run_in_last_pipeline }
+
+    context 'when pipeline has no build reports' do
+      let!(:new_pipeline) { create(:ci_pipeline, project: project, sha: project.commit.id, ref: project.default_branch) }
+
+      it { is_expected.to be_empty }
+    end
+
     it 'returns a list of all scanners which were run successfully in the latest pipeline' do
-      expect(project.scanners_run_in_last_pipeline).to match_array(%w(DAST SAST))
+      expect(scanners_run_in_last_pipeline).to match_array(%w(DAST SAST))
     end
 
     it 'does not include non-security scanners' do
-      expect(project.scanners_run_in_last_pipeline).not_to include(%w(LICENSE_SCANNING))
+      expect(scanners_run_in_last_pipeline).not_to include(%w(LICENSE_SCANNING))
     end
   end
 end