update spec

spec/lib/gitlab/import_export/group_project_finder_spec.rb

@@ -10,12 +10,61 @@ describe Gitlab::ImportExport::GroupProjectFinder do
            group: create(:group))
   end
 
+  context 'labels' do
     it 'finds the right group label' do
       group_label = create(:group_label, 'name': 'group label', 'group': project.group)
 
-    expect(described_class.find(Label,
+      expect(described_class.find_or_new(Label,
                                          title: 'group label',
-                                'project_id': project.id,
-                                'group_id': project.group.id)).to eq([group_label])
+                                         'project_id' => project.id,
+                                         'group_id' => project.group.id)).to eq(group_label)
+    end
+
+    it 'initializes a new label' do
+      label = described_class.find_or_new(Label,
+                                          title: 'group label',
+                                          'project_id' => project.id,
+                                          'group_id' => project.group.id)
+
+      expect(label.persisted?).to be false
+    end
+
+    it 'creates a new label' do
+      label = described_class.find_or_create(Label,
+                                             title: 'group label',
+                                             'project_id' => project.id,
+                                             'group_id' => project.group.id)
+
+      expect(label.persisted?).to be true
+    end
+  end
+
+  context 'milestones' do
+    it 'finds the right group milestone' do
+      milestone = create(:milestone, 'name' => 'group milestone', 'group' => project.group)
+
+      expect(described_class.find_or_new(Milestone,
+                                         title: 'group milestone',
+                                         'project_id' => project.id,
+                                         'group_id' => project.group.id)).to eq(milestone)
+    end
+
+    it 'initializes a new milestone' do
+      milestone = described_class.find_or_new(Milestone,
+                                          title: 'group milestone',
+                                          'project_id' => project.id,
+                                          'group_id' => project.group.id)
+
+      expect(milestone.persisted?).to be false
+    end
+
+    it 'creates a new milestone' do
+      milestone = described_class.find_or_create(Milestone,
+                                             title: 'group milestone',
+                                             'project_id' => project.id,
+                                             'group_id' => project.group.id)
+
+      expect(milestone.persisted?).to be true
+    end
   end
 end