Merge pull request #1264 from Crown-Commercial-Service/feature/nrmi-295-urn-upload-error-handling

Feature/nrmi 295 urn upload error handling

Author: reemi1510

app/controllers/admin/urn_lists_controller.rb

@@ -15,10 +15,10 @@ def create
     if @urn_list.save
       UrnListImporterJob.perform_later(@urn_list)
 
-      return redirect_to admin_urn_lists_path
+      redirect_to admin_urn_lists_path
     end
-
-    render action: :new
+  rescue ActionController::ParameterMissing
+    redirect_to new_admin_urn_list_path, alert: 'Please choose a file to upload'
   end
 
   def download

spec/features/admin_can_upload_urn_list_spec.rb

@@ -24,4 +24,14 @@
 
     expect(UrnListImporterJob).to have_been_enqueued
   end
+
+  context 'without attaching a file' do
+    scenario 'displays an error' do
+      visit new_admin_urn_list_path
+
+      click_button 'Upload'
+
+      expect(page).to have_text 'Please choose a file to upload'
+    end
+  end
 end