1 files changed, 49 insertions, 0 deletions
diff --git a/spec/tasks/gitlab/background_migrations_rake_spec.rb b/spec/tasks/gitlab/background_migrations_rake_spec.rb
new file mode 100644
index 00000000000..079b4d3aea8
--- /dev/null
+++ b/spec/tasks/gitlab/background_migrations_rake_spec.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require 'rake_helper'
+
+RSpec.describe 'gitlab:background_migrations namespace rake tasks' do
+  before do
+    Rake.application.rake_require 'tasks/gitlab/background_migrations'
+  end
+
+  describe 'finalize' do
+    subject(:finalize_task) { run_rake_task('gitlab:background_migrations:finalize', *arguments) }
+
+    context 'without the proper arguments' do
+      let(:arguments) { %w[CopyColumnUsingBackgroundMigrationJob events id] }
+
+      it 'exits without finalizing the migration' do
+        expect(Gitlab::Database::BackgroundMigration::BatchedMigrationRunner).not_to receive(:finalize)
+
+        expect { finalize_task }.to output(/Must specify job_arguments as an argument/).to_stdout
+          .and raise_error(SystemExit) { |error| expect(error.status).to eq(1) }
+      end
+    end
+
+    context 'with the proper arguments' do
+      let(:arguments) { %w[CopyColumnUsingBackgroundMigrationJob events id [["id1"\,"id2"]]] }
+
+      it 'finalizes the matching migration' do
+        expect(Gitlab::Database::BackgroundMigration::BatchedMigrationRunner).to receive(:finalize)
+          .with('CopyColumnUsingBackgroundMigrationJob', 'events', 'id', [%w[id1 id2]])
+
+        expect { finalize_task }.to output(/Done/).to_stdout
+      end
+    end
+  end
+
+  describe 'status' do
+    subject(:status_task) { run_rake_task('gitlab:background_migrations:status') }
+
+    it 'outputs the status of background migrations' do
+      migration1 = create(:batched_background_migration, :finished, job_arguments: [%w[id1 id2]])
+      migration2 = create(:batched_background_migration, :failed, job_arguments: [])
+
+      expect { status_task }.to output(<<~OUTPUT).to_stdout
+        finished   | #{migration1.job_class_name},#{migration1.table_name},#{migration1.column_name},[["id1","id2"]]
+        failed     | #{migration2.job_class_name},#{migration2.table_name},#{migration2.column_name},[]
+      OUTPUT
+    end
+  end
+end