1 files changed, 59 insertions, 0 deletions
diff --git a/spec/migrations/move_container_registry_enabled_to_project_features3_spec.rb b/spec/migrations/move_container_registry_enabled_to_project_features3_spec.rb
new file mode 100644
index 00000000000..4c50aa2dd10
--- /dev/null
+++ b/spec/migrations/move_container_registry_enabled_to_project_features3_spec.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20210415155043_move_container_registry_enabled_to_project_features3.rb')
+
+RSpec.describe MoveContainerRegistryEnabledToProjectFeatures3, :migration do
+  let(:namespace) { table(:namespaces).create!(name: 'gitlab', path: 'gitlab-org') }
+
+  let!(:background_jobs) do
+    table(:background_migration_jobs).create!(class_name: described_class::MIGRATION, arguments: [-1, -2])
+    table(:background_migration_jobs).create!(class_name: described_class::MIGRATION, arguments: [-3, -4])
+  end
+
+  let!(:projects) do
+    [
+      table(:projects).create!(namespace_id: namespace.id, name: 'project 1'),
+      table(:projects).create!(namespace_id: namespace.id, name: 'project 2'),
+      table(:projects).create!(namespace_id: namespace.id, name: 'project 3'),
+      table(:projects).create!(namespace_id: namespace.id, name: 'project 4')
+    ]
+  end
+
+  before do
+    stub_const("#{described_class.name}::BATCH_SIZE", 3)
+  end
+
+  around do |example|
+    Sidekiq::Testing.fake! do
+      freeze_time do
+        example.call
+      end
+    end
+  end
+
+  it 'schedules jobs for ranges of projects' do
+    # old entries in background_migration_jobs should be deleted.
+    expect(table(:background_migration_jobs).count).to eq(2)
+    expect(table(:background_migration_jobs).first.arguments).to eq([-1, -2])
+    expect(table(:background_migration_jobs).second.arguments).to eq([-3, -4])
+
+    migrate!
+
+    # Since track_jobs is true, each job should have an entry in the background_migration_jobs
+    # table.
+    expect(table(:background_migration_jobs).count).to eq(2)
+    expect(table(:background_migration_jobs).first.arguments).to eq([projects[0].id, projects[2].id])
+    expect(table(:background_migration_jobs).second.arguments).to eq([projects[3].id, projects[3].id])
+
+    expect(described_class::MIGRATION)
+      .to be_scheduled_delayed_migration(2.minutes, projects[0].id, projects[2].id)
+
+    expect(described_class::MIGRATION)
+      .to be_scheduled_delayed_migration(4.minutes, projects[3].id, projects[3].id)
+  end
+
+  it 'schedules jobs according to the configured batch size' do
+    expect { migrate! }.to change { BackgroundMigrationWorker.jobs.size }.by(2)
+  end
+end