1 files changed, 74 insertions, 0 deletions
diff --git a/spec/requests/admin/batched_jobs_controller_spec.rb b/spec/requests/admin/batched_jobs_controller_spec.rb
new file mode 100644
index 00000000000..9a0654c64b4
--- /dev/null
+++ b/spec/requests/admin/batched_jobs_controller_spec.rb
@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Admin::BatchedJobsController, :enable_admin_mode do
+  let(:admin) { create(:admin) }
+
+  before do
+    sign_in(admin)
+  end
+
+  describe 'GET #show' do
+    let(:main_database_job) { create(:batched_background_migration_job) }
+    let(:default_model) { ActiveRecord::Base }
+
+    it 'fetches the job' do
+      get admin_background_migration_batched_job_path(main_database_job.batched_migration, main_database_job)
+
+      expect(response).to have_gitlab_http_status(:ok)
+    end
+
+    it 'uses the default connection' do
+      expect(Gitlab::Database::SharedModel).to receive(:using_connection).with(default_model.connection).and_yield
+
+      get admin_background_migration_batched_job_path(main_database_job.batched_migration, main_database_job)
+    end
+
+    it 'returns a default database record' do
+      get admin_background_migration_batched_job_path(main_database_job.batched_migration, main_database_job)
+
+      expect(assigns(:job)).to eql(main_database_job)
+    end
+
+    context 'when the job does not exist' do
+      let(:invalid_job) { non_existing_record_id }
+
+      it 'returns not found' do
+        get admin_background_migration_batched_job_path(main_database_job.batched_migration, invalid_job)
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when multiple database is enabled', :add_ci_connection do
+      let(:base_models) { { 'fake_db' => default_model, 'ci' => ci_model } }
+      let(:ci_model) { Ci::ApplicationRecord }
+
+      before do
+        allow(Gitlab::Database).to receive(:database_base_models).and_return(base_models)
+      end
+
+      context 'when CI database is provided' do
+        it "uses CI database connection" do
+          expect(Gitlab::Database::SharedModel).to receive(:using_connection).with(ci_model.connection).and_yield
+
+          get admin_background_migration_batched_job_path(main_database_job.batched_migration, main_database_job,
+            database: 'ci')
+        end
+
+        it 'returns a CI database record' do
+          ci_database_job = Gitlab::Database::SharedModel.using_connection(ci_model.connection) do
+            create(:batched_background_migration_job, :failed)
+          end
+
+          get admin_background_migration_batched_job_path(ci_database_job.batched_migration,
+            ci_database_job, database: 'ci')
+
+          expect(assigns(:job)).to eql(ci_database_job)
+          expect(assigns(:job)).not_to eql(main_database_job)
+        end
+      end
+    end
+  end
+end