Remove reference prefix from Vulnerability

app/models/vulnerability.rb

 # frozen_string_literal: true
 
 # Placeholder class for model that is implemented in EE
-# It reserves '+' as a reference prefix, but the table does not exist in FOSS
 class Vulnerability < ApplicationRecord
-  include IgnorableColumns
-
-  def self.reference_prefix
-    '+'
-  end
-
-  def self.reference_prefix_escaped
-    '&plus;'
-  end
 end
 
 Vulnerability.prepend_if_ee('EE::Vulnerability')

ee/spec/models/ee/vulnerability_spec.rb

@@ -492,91 +492,6 @@ RSpec.describe Vulnerability do
     it { is_expected.to eq('critical' => 6, 'high' => 4, 'info' => 1, 'low' => 5, 'medium' => 2, 'unknown' => 3) }
   end
 
-  describe '.reference_prefix' do
-    subject { described_class.reference_prefix }
-
-    it { is_expected.to eq('+') }
-  end
-
-  describe '#to_reference' do
-    let(:namespace) { build(:namespace, path: 'sample-namespace') }
-    let(:project) { build(:project, name: 'sample-project', namespace: namespace) }
-    let(:vulnerability) { build(:vulnerability, id: 1, project: project) }
-
-    context 'when nil argument' do
-      it 'returns vulnerability id' do
-        expect(vulnerability.to_reference).to eq '+1'
-      end
-
-      it 'returns complete path to the vulnerability with full: true' do
-        expect(vulnerability.to_reference(full: true)).to eq 'sample-namespace/sample-project+1'
-      end
-    end
-
-    context 'when argument is a project' do
-      context 'when same project' do
-        it 'returns vulnerability id' do
-          expect(vulnerability.to_reference(project)).to eq('+1')
-        end
-
-        it 'returns full reference with full: true' do
-          expect(vulnerability.to_reference(project, full: true)).to eq 'sample-namespace/sample-project+1'
-        end
-      end
-
-      context 'when cross-project in same namespace' do
-        let(:another_project) do
-          build(:project, name: 'another-project', namespace: project.namespace)
-        end
-
-        it 'returns a cross-project reference' do
-          expect(vulnerability.to_reference(another_project)).to eq 'sample-project+1'
-        end
-
-        it 'returns full reference with full: true' do
-          expect(vulnerability.to_reference(another_project, full: true)).to eq 'sample-namespace/sample-project+1'
-        end
-      end
-
-      context 'when cross-project in different namespace' do
-        let(:another_namespace) { build(:namespace, path: 'another-namespace') }
-        let(:another_namespace_project) { build(:project, path: 'another-project', namespace: another_namespace) }
-
-        it 'returns complete path to the vulnerability' do
-          expect(vulnerability.to_reference(another_namespace_project)).to eq 'sample-namespace/sample-project+1'
-        end
-
-        it 'returns full reference with full: true' do
-          expect(vulnerability.to_reference(another_namespace_project, full: true)).to eq 'sample-namespace/sample-project+1'
-        end
-      end
-    end
-
-    context 'when argument is a namespace' do
-      context 'when same as vulnerability' do
-        it 'returns path to the vulnerability with the project name' do
-          expect(vulnerability.to_reference(namespace)).to eq 'sample-project+1'
-        end
-
-        it 'returns full reference with full: true' do
-          expect(vulnerability.to_reference(namespace, full: true)).to eq 'sample-namespace/sample-project+1'
-        end
-      end
-
-      context 'when different from vulnerability namespace' do
-        let(:group) { build(:group, name: 'Group', path: 'sample-group') }
-
-        it 'returns full path to the vulnerability with full: true' do
-          expect(vulnerability.to_reference(group)).to eq 'sample-namespace/sample-project+1'
-        end
-
-        it 'returns full path to the vulnerability with full: false' do
-          expect(vulnerability.to_reference(group, full: false)).to eq 'sample-namespace/sample-project+1'
-        end
-      end
-    end
-  end
-
   describe '#finding' do
     let_it_be(:project) { create(:project, :with_vulnerability) }
     let_it_be(:vulnerability) { project.vulnerabilities.first }