Add Packages::Debian::DestroyDistributionService

app/services/packages/debian/destroy_distribution_service.rb

+# frozen_string_literal: true
+
+module Packages
+  module Debian
+    class DestroyDistributionService
+      def initialize(distribution)
+        @distribution = distribution
+      end
+
+      def execute
+        destroy_distribution
+      end
+
+      private
+
+      def destroy_distribution
+        if @distribution.destroy
+          success
+        else
+          error("Unable to destroy Debian #{@distribution.model_name.human.downcase}")
+        end
+      end
+
+      def success
+        ServiceResponse.success
+      end
+
+      def error(message)
+        ServiceResponse.error(message: message, payload: { distribution: @distribution })
+      end
+    end
+  end
+end

spec/services/packages/debian/destroy_distribution_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Packages::Debian::DestroyDistributionService do
+  RSpec.shared_examples 'Destroy Debian Distribution' do |expected_message|
+    it 'returns ServiceResponse', :aggregate_failures do
+      if expected_message.nil?
+        expect { response }
+          .to change { container.debian_distributions.klass.all.count }
+          .from(1).to(0)
+          .and change { container.debian_distributions.count }
+          .from(1).to(0)
+          .and change { component1.class.all.count }
+          .from(2).to(0)
+          .and change { architecture1.class.all.count }
+          .from(3).to(0)
+      else
+        expect { response }
+          .to not_change { container.debian_distributions.klass.all.count }
+          .and not_change { container.debian_distributions.count }
+          .and not_change { component1.class.all.count }
+          .and not_change { architecture1.class.all.count }
+      end
+
+      expect(response).to be_a(ServiceResponse)
+      expect(response.success?).to eq(expected_message.nil?)
+      expect(response.error?).to eq(!expected_message.nil?)
+      expect(response.message).to eq(expected_message)
+
+      if expected_message.nil?
+        expect(response.payload).to eq({})
+      else
+        expect(response.payload).to eq(distribution: distribution)
+      end
+    end
+  end
+
+  RSpec.shared_examples 'Debian Destroy Distribution Service' do |container_type, can_freeze|
+    context "with a Debian #{container_type} distribution" do
+      let_it_be(:container, freeze: can_freeze) { create(container_type) } # rubocop:disable Rails/SaveBang
+      let_it_be(:distribution, freeze: can_freeze) { create("debian_#{container_type}_distribution", container: container) }
+      let_it_be(:component1, freeze: can_freeze) { create("debian_#{container_type}_component", distribution: distribution, name: 'component1') }
+      let_it_be(:component2, freeze: can_freeze) { create("debian_#{container_type}_component", distribution: distribution, name: 'component2') }
+      let_it_be(:architecture0, freeze: true) { create("debian_#{container_type}_architecture", distribution: distribution, name: 'all') }
+      let_it_be(:architecture1, freeze: can_freeze) { create("debian_#{container_type}_architecture", distribution: distribution, name: 'architecture1') }
+      let_it_be(:architecture2, freeze: can_freeze) { create("debian_#{container_type}_architecture", distribution: distribution, name: 'architecture2') }
+
+      subject { described_class.new(distribution) }
+
+      let(:response) { subject.execute }
+
+      context 'with a distribution' do
+        it_behaves_like 'Destroy Debian Distribution'
+      end
+
+      context 'when destroy fails' do
+        before do
+          expect(distribution).to receive(:destroy).and_return(false)
+        end
+
+        it_behaves_like 'Destroy Debian Distribution', "Unable to destroy Debian #{container_type} distribution"
+      end
+    end
+  end
+
+  it_behaves_like 'Debian Destroy Distribution Service', :project, true
+  it_behaves_like 'Debian Destroy Distribution Service', :group, false
+end