1 files changed, 23 insertions, 0 deletions
diff --git a/spec/lib/gitlab/database/async_indexes_spec.rb b/spec/lib/gitlab/database/async_indexes_spec.rb
new file mode 100644
index 00000000000..74e30ea2c4e
--- /dev/null
+++ b/spec/lib/gitlab/database/async_indexes_spec.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Database::AsyncIndexes do
+  describe '.create_pending_indexes!' do
+    subject { described_class.create_pending_indexes! }
+
+    before do
+      create_list(:postgres_async_index, 4)
+    end
+
+    it 'takes 2 pending indexes and creates those' do
+      Gitlab::Database::AsyncIndexes::PostgresAsyncIndex.order(:id).limit(2).each do |index|
+        creator = double('index creator')
+        expect(Gitlab::Database::AsyncIndexes::IndexCreator).to receive(:new).with(index).and_return(creator)
+        expect(creator).to receive(:perform)
+      end
+
+      subject
+    end
+  end
+end