Merge branch 'debian_get_or_create_incoming_service' into 'master'

Add Packages::Debian::GetOrCreateIncomingService

See merge request gitlab-org/gitlab!50431

app/services/packages/debian/get_or_create_incoming_service.rb

+# frozen_string_literal: true
+
+module Packages
+  module Debian
+    class GetOrCreateIncomingService < ::Packages::CreatePackageService
+      def execute
+        find_or_create_package!(:debian, name: 'incoming', version: nil)
+      end
+    end
+  end
+end

spec/services/packages/debian/get_or_create_incoming_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Packages::Debian::GetOrCreateIncomingService do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+
+  subject(:service) { described_class.new(project, user) }
+
+  describe '#execute' do
+    subject(:package) { service.execute }
+
+    context 'run once' do
+      it 'creates a new package', :aggregate_failures do
+        expect(package).to be_valid
+        expect(package.project_id).to eq(project.id)
+        expect(package.creator_id).to eq(user.id)
+        expect(package.name).to eq('incoming')
+        expect(package.version).to be_nil
+        expect(package.package_type).to eq('debian')
+        expect(package.debian_incoming?).to be_truthy
+      end
+
+      it_behaves_like 'assigns the package creator'
+    end
+
+    context 'run twice' do
+      let!(:package2) { service.execute }
+
+      it 'returns the same object' do
+        expect(package2.id).to eq(package.id)
+      end
+    end
+  end
+end