BulkImports: Import milestone iid

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/326157

changelogs/unreleased/kassio-bulkimports-import-milestone-iid.yml

+---
+title: 'BulkImports: Import milestone iid'
+merge_request: 58107
+author:
+type: changed

doc/user/group/import/index.md

@@ -57,6 +57,7 @@ The following resources are migrated to the target instance:
   - due date
   - created at
   - updated at
+  - iid ([Introduced in 13.11](https://gitlab.com/gitlab-org/gitlab/-/issues/326157))
 - Iterations ([Introduced in 13.10](https://gitlab.com/gitlab-org/gitlab/-/issues/292428))
   - iid
   - title

lib/bulk_imports/groups/graphql/get_milestones_query.rb

@@ -16,6 +16,7 @@ module BulkImports
                   has_next_page: hasNextPage
                 }
                 nodes {
+                  iid
                   title
                   description
                   state

spec/lib/bulk_imports/groups/pipelines/milestones_pipeline_spec.rb

@@ -30,8 +30,8 @@ RSpec.describe BulkImports::Groups::Pipelines::MilestonesPipeline do
 
   describe '#run' do
     it 'imports group milestones' do
-      first_page = extracted_data(title: 'milestone1', has_next_page: true)
-      last_page = extracted_data(title: 'milestone2')
+      first_page = extracted_data(title: 'milestone1', iid: 1, has_next_page: true)
+      last_page = extracted_data(title: 'milestone2', iid: 2)
 
       allow_next_instance_of(BulkImports::Common::Extractors::GraphqlExtractor) do |extractor|
         allow(extractor)
@@ -96,10 +96,11 @@ RSpec.describe BulkImports::Groups::Pipelines::MilestonesPipeline do
     end
   end
 
-  def milestone_data(title)
+  def milestone_data(title, iid: 1)
     {
       'title' => title,
       'description' => 'desc',
+      'iid' => iid,
       'state' => 'closed',
       'start_date' => '2020-10-21',
       'due_date' => '2020-10-22',
@@ -108,14 +109,14 @@ RSpec.describe BulkImports::Groups::Pipelines::MilestonesPipeline do
     }
   end
 
-  def extracted_data(title:, has_next_page: false)
+  def extracted_data(title:, iid: 1, has_next_page: false)
     page_info = {
       'has_next_page' => has_next_page,
       'next_page' => has_next_page ? 'cursor' : nil
     }
 
     BulkImports::Pipeline::ExtractedData.new(
-      data: milestone_data(title),
+      data: milestone_data(title, iid: iid),
       page_info: page_info
     )
   end