1 files changed, 33 insertions, 0 deletions
diff --git a/spec/services/user_preferences/update_service_spec.rb b/spec/services/user_preferences/update_service_spec.rb
new file mode 100644
index 00000000000..59089a4a7af
--- /dev/null
+++ b/spec/services/user_preferences/update_service_spec.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe UserPreferences::UpdateService do
+  let(:user) { create(:user) }
+  let(:params) { { view_diffs_file_by_file: false } }
+
+  describe '#execute' do
+    subject(:service) { described_class.new(user, params) }
+
+    context 'successfully updating the record' do
+      it 'updates the preference and returns a success' do
+        result = service.execute
+
+        expect(result.status).to eq(:success)
+        expect(result.payload[:preferences].view_diffs_file_by_file).to eq(params[:view_diffs_file_by_file])
+      end
+    end
+
+    context 'unsuccessfully updating the record' do
+      before do
+        allow(user.user_preference).to receive(:update).and_return(false)
+      end
+
+      it 'returns an error' do
+        result = service.execute
+
+        expect(result.status).to eq(:error)
+      end
+    end
+  end
+end