use expect_mirror_to_have_error_and_timeago in remote_mirror_spec

spec/features/projects/remote_mirror_spec.rb

@@ -17,9 +17,7 @@ describe 'Project remote mirror', :feature do
 
         visit project_mirror_path(project)
 
-        row = first('.js-mirrors-table-body tr')
-        expect(row).to have_content('Error')
-        expect(row).to have_content('Never')
+        expect_mirror_to_have_error_and_timeago('Never')
       end
     end
 
@@ -29,10 +27,14 @@ describe 'Project remote mirror', :feature do
 
         visit project_mirror_path(project)
 
+        expect_mirror_to_have_error_and_timeago('5 minutes ago')
+      end
+    end
+
+    def expect_mirror_to_have_error_and_timeago(timeago)
       row = first('.js-mirrors-table-body tr')
       expect(row).to have_content('Error')
-        expect(row).to have_content('5 minutes ago')
-      end
+      expect(row).to have_content(timeago)
     end
   end
 end