Sidekiq queue migration for HashedStorage::MigratorWorker

Migrate jobs from `storage_migrator` to
`hashed_storage:hashed_storage_migrator`.

1 files changed, 47 insertions, 0 deletions

diff --git a/spec/migrations/migrate_storage_migrator_sidekiq_queue_spec.rb b/spec/migrations/migrate_storage_migrator_sidekiq_queue_spec.rb
new file mode 100644
index 00000000000..f8cf76cb339
--- /dev/null
+++ b/spec/migrations/migrate_storage_migrator_sidekiq_queue_spec.rb
@@ -0,0 +1,47 @@
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20190124200344_migrate_storage_migrator_sidekiq_queue.rb')
+
+describe MigrateStorageMigratorSidekiqQueue, :sidekiq, :redis do
+  include Gitlab::Database::MigrationHelpers
+
+  context 'when there are jobs in the queues' do
+    it 'correctly migrates queue when migrating up' do
+      Sidekiq::Testing.disable! do
+        stubbed_worker(queue: :storage_migrator).perform_async(1, 5)
+
+        described_class.new.up
+
+        expect(sidekiq_queue_length('storage_migrator')).to eq 0
+        expect(sidekiq_queue_length('hashed_storage:hashed_storage_migrator')).to eq 1
+      end
+    end
+
+    it 'correctly migrates queue when migrating down' do
+      Sidekiq::Testing.disable! do
+        stubbed_worker(queue: :'hashed_storage:hashed_storage_migrator').perform_async(1, 5)
+
+        described_class.new.down
+
+        expect(sidekiq_queue_length('storage_migrator')).to eq 1
+        expect(sidekiq_queue_length('hashed_storage:hashed_storage_migrator')).to eq 0
+      end
+    end
+  end
+
+  context 'when there are no jobs in the queues' do
+    it 'does not raise error when migrating up' do
+      expect { described_class.new.up }.not_to raise_error
+    end
+
+    it 'does not raise error when migrating down' do
+      expect { described_class.new.down }.not_to raise_error
+    end
+  end
+
+  def stubbed_worker(queue:)
+    Class.new do
+      include Sidekiq::Worker
+      sidekiq_options queue: queue
+    end
+  end
+end