1 files changed, 27 insertions, 0 deletions
diff --git a/spec/finders/database/batched_background_migrations_finder_spec.rb b/spec/finders/database/batched_background_migrations_finder_spec.rb
new file mode 100644
index 00000000000..bd88be72fa5
--- /dev/null
+++ b/spec/finders/database/batched_background_migrations_finder_spec.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Database::BatchedBackgroundMigrationsFinder do
+  let!(:migration_1) { create(:batched_background_migration, created_at: Time.now - 2) }
+  let!(:migration_2) { create(:batched_background_migration, created_at: Time.now - 1) }
+  let!(:migration_3) { create(:batched_background_migration, created_at: Time.now - 3) }
+
+  let(:finder) { described_class.new(connection: connection) }
+
+  describe '#execute' do
+    let(:connection) { ApplicationRecord.connection }
+
+    subject { finder.execute }
+
+    it 'returns migrations order by created_at (DESC)' do
+      is_expected.to eq([migration_2, migration_1, migration_3])
+    end
+
+    it 'limits the number of returned migrations' do
+      stub_const('Database::BatchedBackgroundMigrationsFinder::RETURNED_MIGRATIONS', 2)
+
+      is_expected.to eq([migration_2, migration_1])
+    end
+  end
+end