Create Backlog/Done lists when creating a new board

app/services/boards/create_service.rb

@@ -5,15 +5,18 @@ module Boards
     end
 
     def execute
-      if project.board.present?
-        project.board
-      else
-        project.create_board
-      end
+      create_board! unless project.board.present?
+      project.board
     end
 
     private
 
     attr_reader :project
+
+    def create_board!
+      project.create_board
+      project.board.lists.create(list_type: :backlog, position: 0)
+      project.board.lists.create(list_type: :done, position: 1)
+    end
   end
 end

spec/services/boards/create_service_spec.rb

@@ -2,18 +2,34 @@ require 'spec_helper'
 
 describe Boards::CreateService, services: true do
   describe '#execute' do
-    it 'creates a new board when project does not has one' do
-      project = create(:empty_project, board: nil)
-      service = described_class.new(project)
+    subject(:service) { described_class.new(project) }
 
-      expect { service.execute }.to change(Board, :count).by(1)
+    context 'when project does not have a board' do
+      let(:project) { create(:empty_project, board: nil) }
+
+      it 'creates a new board' do
+        expect { service.execute }.to change(Board, :count).by(1)
+      end
+
+      it 'creates default lists' do
+        service.execute
+
+        expect(project.board.lists.size).to eq 2
+        expect(project.board.lists.first).to be_backlog
+        expect(project.board.lists.last).to be_done
+      end
     end
 
-    it 'returns project board when project has one' do
-      project = create(:project_with_board)
-      service = described_class.new(project)
+    context 'when project has a board' do
+      let!(:project) { create(:project_with_board) }
+
+      it 'does not create a new board' do
+        expect { service.execute }.not_to change(Board, :count)
+      end
 
-      expect(service.execute).to eq project.board
+      it 'does not create board lists' do
+        expect { service.execute }.not_to change(project.board.lists, :count)
+      end
     end
   end
 end