Add support to migrate existing projects to Hashed Storage asynchashed-storage-migration-path

1 files changed, 52 insertions, 0 deletions

diff --git a/spec/tasks/gitlab/storage_rake_spec.rb b/spec/tasks/gitlab/storage_rake_spec.rb
new file mode 100644
index 00000000000..f59792c3d36
--- /dev/null
+++ b/spec/tasks/gitlab/storage_rake_spec.rb
@@ -0,0 +1,52 @@
+require 'rake_helper'
+
+describe 'gitlab:storage rake tasks' do
+  before do
+    Rake.application.rake_require 'tasks/gitlab/storage'
+
+    stub_warn_user_is_not_gitlab
+  end
+
+  describe 'migrate_to_hashed rake task' do
+    context '0 legacy projects' do
+      it 'does nothing' do
+        expect(StorageMigratorWorker).not_to receive(:perform_async)
+
+        run_rake_task('gitlab:storage:migrate_to_hashed')
+      end
+    end
+
+    context '5 legacy projects' do
+      let(:projects) { create_list(:project, 5, storage_version: 0) }
+
+      context 'in batches of 1' do
+        before do
+          stub_env('BATCH' => 1)
+        end
+
+        it 'enqueues one StorageMigratorWorker per project' do
+          projects.each do |project|
+            expect(StorageMigratorWorker).to receive(:perform_async).with(project.id, project.id)
+          end
+
+          run_rake_task('gitlab:storage:migrate_to_hashed')
+        end
+      end
+
+      context 'in batches of 2' do
+        before do
+          stub_env('BATCH' => 2)
+        end
+
+        it 'enqueues one StorageMigratorWorker per 2 projects' do
+          projects.map(&:id).sort.each_slice(2) do |first, last|
+            last ||= first
+            expect(StorageMigratorWorker).to receive(:perform_async).with(first, last)
+          end
+
+          run_rake_task('gitlab:storage:migrate_to_hashed')
+        end
+      end
+    end
+  end
+end