1 files changed, 35 insertions, 0 deletions
diff --git a/spec/services/work_items/widgets/description_service/update_service_spec.rb b/spec/services/work_items/widgets/description_service/update_service_spec.rb
new file mode 100644
index 00000000000..a2eceb97f09
--- /dev/null
+++ b/spec/services/work_items/widgets/description_service/update_service_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe WorkItems::Widgets::DescriptionService::UpdateService do
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+  let_it_be_with_reload(:work_item) { create(:work_item, project: project, description: 'old description') }
+
+  let(:widget) { work_item.widgets.find {|widget| widget.is_a?(WorkItems::Widgets::Description) } }
+
+  describe '#update' do
+    subject { described_class.new(widget: widget, current_user: user).update(params: params) } # rubocop:disable Rails/SaveBang
+
+    context 'when description param is present' do
+      let(:params) { { description: 'updated description' } }
+
+      it 'correctly sets work item description value' do
+        subject
+
+        expect(work_item.description).to eq('updated description')
+      end
+    end
+
+    context 'when description param is not present' do
+      let(:params) { {} }
+
+      it 'does not change work item description value' do
+        subject
+
+        expect(work_item.description).to eq('old description')
+      end
+    end
+  end
+end