Add test for restoring associations with import/export

spec/lib/gitlab/import_export/project.json

@@ -6465,6 +6465,26 @@
           }
         }
       ],
+      "stages": [
+        {
+          "id": 11,
+          "project_id": 5,
+          "pipeline_id": 36,
+          "name": "test",
+          "status": 1,
+          "created_at": "2016-03-22T15:44:44.772Z",
+          "updated_at": "2016-03-29T06:44:44.634Z"
+        },
+        {
+          "id": 12,
+          "project_id": 5,
+          "pipeline_id": 36,
+          "name": "deploy",
+          "status": 2,
+          "created_at": "2016-03-22T15:45:45.772Z",
+          "updated_at": "2016-03-29T06:45:45.634Z"
+        }
+      ],
       "statuses": [
         {
           "id": 71,
@@ -6487,6 +6507,7 @@
           "stage": "test",
           "trigger_request_id": null,
           "stage_idx": 1,
+          "stage_id": 11,
           "tag": null,
           "ref": "master",
           "user_id": null,
@@ -6515,15 +6536,16 @@
           "runner_id": null,
           "coverage": null,
           "commit_id": 36,
-          "commands": "$ build command",
+          "commands": "$ deploy command",
           "job_id": null,
           "name": "test build 2",
           "deploy": false,
           "options": null,
           "allow_failure": false,
-          "stage": "test",
+          "stage": "deploy",
           "trigger_request_id": null,
           "stage_idx": 1,
+          "stage_id": 12,
           "tag": null,
           "ref": "master",
           "user_id": null,

spec/lib/gitlab/import_export/project_tree_restorer_spec.rb

@@ -179,6 +179,18 @@ describe Gitlab::ImportExport::ProjectTreeRestorer do
             end
         end
       end
+
+      context 'when restoring hierarchy of pipeline, stages and jobs' do
+        let(:pipeline) { Ci::Pipeline.first }
+
+        it 'restores pipeline stages' do
+          expect(pipeline.stages.count).to be 2
+        end
+
+        it 'correctly restores association between a stage and a job' do
+          expect(pipeline.statuses).to all(have_attributes(stage_id: a_value > 10))
+        end
+      end
     end
   end