-add_test(NAME servicemenutest
- COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/../settings/services/test/test_run.rb)
+find_gem(test-unit)
+set_package_properties(Gem:test-unit PROPERTIES
+ TYPE RECOMMENDED
+ DESCRIPTION "Ruby gem 'test-unit' required for testing of servicemenu helpers.")
+if (Gem:test-unit_FOUND)
+ add_test(NAME servicemenutest
+ COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/../settings/services/test/test_run.rb)
+endif()