Sort vuln by severity and confidence for dashboard and pipeline

Added tests
Updated existing test

changelogs/unreleased/sort-severity-then-confidence.yml

+---
+title: Sort vulnerabilities by severity then confidence for dashboard and pipeline views
+merge_request: 18675
+author:
+type: changed

ee/app/finders/security/pipeline_vulnerabilities_finder.rb

@@ -24,7 +24,11 @@ module Security
     end
 
     def execute
-      pipeline_reports&.each_with_object([]) do |(type, report), occurrences|
+      reports = pipeline_reports
+
+      return [] if reports.nil?
+
+      occurrences = reports.each_with_object([]) do |(type, report), occurrences|
         next unless requested_type?(type)
 
         raise ParseError, 'JSON parsing failed' if report.error.is_a?(Gitlab::Ci::Parsers::Security::Common::SecurityReportParserError)
@@ -34,6 +38,8 @@ module Security
 
         occurrences.concat(filtered_occurrences)
       end
+
+      occurrences.sort_by { |x| [x.severity, x.confidence] }
     end
 
     private

ee/app/models/vulnerabilities/occurrence.rb

@@ -77,7 +77,7 @@ module Vulnerabilities
     validates :raw_metadata, presence: true
 
     scope :report_type, -> (type) { where(report_type: report_types[type]) }
-    scope :ordered, -> { order("severity desc", :id) }
+    scope :ordered, -> { order(severity: :desc, confidence: :desc, id: :asc) }
 
     scope :by_report_types, -> (values) { where(report_type: values) }
     scope :by_projects, -> (values) { where(project_id: values) }

ee/spec/finders/security/pipeline_vulnerabilities_finder_spec.rb

@@ -52,6 +52,20 @@ describe Security::PipelineVulnerabilitiesFinder do
 
     subject { described_class.new(pipeline: pipeline, params: params).execute }
 
+    context 'by order' do
+      let(:params) { { report_type: %w[sast] } }
+      let!(:occurrence1) { build(:vulnerabilities_occurrence, confidence: Vulnerabilities::Occurrence::CONFIDENCE_LEVELS[:high],   severity: Vulnerabilities::Occurrence::SEVERITY_LEVELS[:high]) }
+      let!(:occurrence2) { build(:vulnerabilities_occurrence, confidence: Vulnerabilities::Occurrence::CONFIDENCE_LEVELS[:medium], severity: Vulnerabilities::Occurrence::SEVERITY_LEVELS[:critical]) }
+      let!(:occurrence3) { build(:vulnerabilities_occurrence, confidence: Vulnerabilities::Occurrence::CONFIDENCE_LEVELS[:high],   severity: Vulnerabilities::Occurrence::SEVERITY_LEVELS[:critical]) }
+      let!(:res) { [occurrence3, occurrence2, occurrence1] }
+
+      it 'orders by severity and confidence' do
+        allow_any_instance_of(described_class).to receive(:filter).and_return(res)
+
+        expect(subject).to eq([occurrence3, occurrence2, occurrence1])
+      end
+    end
+
     context 'by report type' do
       context 'when sast' do
         let(:params) { { report_type: %w[sast] } }

ee/spec/models/vulnerabilities/occurrence_spec.rb

@@ -61,6 +61,16 @@ describe Vulnerabilities::Occurrence do
     end
   end
 
+  context 'order' do
+    let!(:occurrence1) { create(:vulnerabilities_occurrence, confidence: described_class::CONFIDENCE_LEVELS[:high], severity:   described_class::SEVERITY_LEVELS[:high]) }
+    let!(:occurrence2) { create(:vulnerabilities_occurrence, confidence: described_class::CONFIDENCE_LEVELS[:medium], severity: described_class::SEVERITY_LEVELS[:critical]) }
+    let!(:occurrence3) { create(:vulnerabilities_occurrence, confidence: described_class::CONFIDENCE_LEVELS[:high], severity:   described_class::SEVERITY_LEVELS[:critical]) }
+
+    it 'orders by severity and confidence' do
+      expect(described_class.all.ordered).to eq([occurrence3, occurrence2, occurrence1])
+    end
+  end
+
   describe '.report_type' do
     let(:report_type) { :sast }
 

ee/spec/support/shared_examples/requests/api/vulnerabilities_shared_examples.rb

@@ -125,7 +125,7 @@ shared_examples 'getting list of vulnerability findings' do
 
         # occurrences are implicitly sorted by Security::MergeReportsService,
         # occurrences order differs from what is present in fixture file
-        expect(json_response.first['name']).to eq 'ECB mode is insecure'
+        expect(json_response.first['name']).to eq 'Consider possible security implications associated with Popen module.'
       end
 
       it 'returns vulnerabilities with dependency_scanning report_type' do