Take two for MR metrics population background migration

1 files changed, 36 insertions, 0 deletions

diff --git a/spec/migrations/migrate_remaining_mr_metrics_populating_background_migration_spec.rb b/spec/migrations/migrate_remaining_mr_metrics_populating_background_migration_spec.rb
new file mode 100644
index 00000000000..47dab18183c
--- /dev/null
+++ b/spec/migrations/migrate_remaining_mr_metrics_populating_background_migration_spec.rb
@@ -0,0 +1,36 @@
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20180521162137_migrate_remaining_mr_metrics_populating_background_migration.rb')
+
+describe MigrateRemainingMrMetricsPopulatingBackgroundMigration, :migration, :sidekiq do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+  let(:mrs) { table(:merge_requests) }
+
+  before do
+    namespaces.create!(id: 1, name: 'foo', path: 'foo')
+    projects.create!(id: 123, name: 'gitlab1', path: 'gitlab1', namespace_id: 1)
+    projects.create!(id: 456, name: 'gitlab2', path: 'gitlab2', namespace_id: 1)
+    projects.create!(id: 789, name: 'gitlab3', path: 'gitlab3', namespace_id: 1)
+    mrs.create!(title: 'foo', target_branch: 'target', source_branch: 'source', target_project_id: 123)
+    mrs.create!(title: 'bar', target_branch: 'target', source_branch: 'source', target_project_id: 456)
+    mrs.create!(title: 'kux', target_branch: 'target', source_branch: 'source', target_project_id: 789)
+  end
+
+  it 'correctly schedules background migrations' do
+    stub_const("#{described_class.name}::BATCH_SIZE", 2)
+
+    Sidekiq::Testing.fake! do
+      Timecop.freeze do
+        migrate!
+
+        expect(described_class::MIGRATION)
+          .to be_scheduled_delayed_migration(10.minutes, mrs.first.id, mrs.second.id)
+
+        expect(described_class::MIGRATION)
+          .to be_scheduled_delayed_migration(20.minutes, mrs.third.id, mrs.third.id)
+
+        expect(BackgroundMigrationWorker.jobs.size).to eq(2)
+      end
+    end
+  end
+end