Error on delete tag when importing repository

When a repository is importing tag deletion
is not allowed so an error is returned.

Changelog: changed

app/services/projects/container_repository/delete_tags_service.rb

@@ -14,6 +14,7 @@ module Projects
 
         @tag_names = params[:tags]
         return error('not tags specified') if @tag_names.blank?
+        return error('repository importing') if @container_repository.migration_importing?
 
         delete_tags
       end

spec/services/projects/container_repository/delete_tags_service_spec.rb

@@ -14,7 +14,7 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
     ]
   end
 
-  RSpec.shared_examples 'logging a success response' do
+  shared_examples 'logging a success response' do
     it 'logs an info message' do
       expect(service).to receive(:log_info).with(
         service_class: 'Projects::ContainerRepository::DeleteTagsService',
@@ -28,7 +28,7 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
     end
   end
 
-  RSpec.shared_examples 'logging an error response' do |message: 'could not delete tags', extra_log: {}|
+  shared_examples 'logging an error response' do |message: 'could not delete tags', extra_log: {}|
     it 'logs an error message' do
       log_data = {
           service_class: 'Projects::ContainerRepository::DeleteTagsService',
@@ -45,7 +45,7 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
     end
   end
 
-  RSpec.shared_examples 'calling the correct delete tags service' do |expected_service_class|
+  shared_examples 'calling the correct delete tags service' do |expected_service_class|
     let(:service_response) { { status: :success, deleted: tags } }
     let(:excluded_service_class) { available_service_classes.excluding(expected_service_class).first }
 
@@ -69,7 +69,7 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
     end
   end
 
-  RSpec.shared_examples 'handling invalid params' do
+  shared_examples 'handling invalid params' do
     context 'with invalid params' do
       before do
         expect(::Projects::ContainerRepository::Gitlab::DeleteTagsService).not_to receive(:new)
@@ -91,7 +91,7 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
     end
   end
 
-  RSpec.shared_examples 'supporting fast delete' do
+  shared_examples 'supporting fast delete' do
     context 'when the registry supports fast delete' do
       before do
         allow(repository.client).to receive(:supports_tag_delete?).and_return(true)
@@ -155,6 +155,14 @@ RSpec.describe Projects::ContainerRepository::DeleteTagsService do
 
         it_behaves_like 'handling invalid params'
       end
+
+      context 'when the repository is importing' do
+        before do
+          repository.update_columns(migration_state: 'importing', migration_import_started_at: Time.zone.now)
+        end
+
+        it { is_expected.to include(status: :error, message: 'repository importing') }
+      end
     end
 
     context 'without user' do

spec/support/shared_contexts/services/projects/container_repository/delete_tags_service_shared_context.rb

@@ -3,7 +3,7 @@
 RSpec.shared_context 'container repository delete tags service shared context' do
   let_it_be(:user) { create(:user) }
   let_it_be(:project, reload: true) { create(:project, :private) }
-  let_it_be(:repository) { create(:container_repository, :root, project: project) }
+  let_it_be_with_reload(:repository) { create(:container_repository, :root, project: project) }
 
   let(:params) { { tags: tags } }