BB importer: Milestone importer

lib/bitbucket/representation/issue.rb

@@ -27,6 +27,10 @@ module Bitbucket
         raw['title']
       end
 
+      def milestone
+        raw.dig('milestone', 'name')
+      end
+
       def created_at
         raw['created_on']
       end

lib/gitlab/bitbucket_import/importer.rb

@@ -67,6 +67,7 @@ module Gitlab
             description += issue.description
 
             label_name = issue.kind
+            milestone = issue.milestone ? project.milestones.find_or_create_by(title: issue.milestone) : nil
 
             issue = project.issues.create!(
               iid: issue.iid,
@@ -74,6 +75,7 @@ module Gitlab
               description: description,
               state: issue.state,
               author_id: gitlab_user_id(project, issue.author),
+              milestone: milestone,
               created_at: issue.created_at,
               updated_at: issue.updated_at
             )

spec/lib/bitbucket/representation/issue_spec.rb

@@ -9,6 +9,12 @@ describe Bitbucket::Representation::Issue do
     it { expect(described_class.new('kind' => 'bug').kind).to eq('bug') }
   end
 
+  describe '#milestone' do
+    it { expect(described_class.new({ 'milestone' => { 'name' => '1.0' } }).milestone).to eq('1.0') }
+    it { expect(described_class.new({}).milestone).to be_nil }
+  end
+
+
   describe '#author' do
     it { expect(described_class.new({ 'reporter' => { 'username' => 'Ben' } }).author).to eq('Ben') }
     it { expect(described_class.new({}).author).to be_nil }