Nils Gladitz wrote: > On 27.10.2015 19:58, Stephen Kelly wrote: >> Chris Green wrote: >> >>> Ah, I see. It appears I was unclear on the difference between target and >>> test. What I actually want is the *test* property SKIP_RETURN_CODE, >>> which there does not seem to be any way to access via a generator >>> expression. Looks like I'm out of look, unless this is an upcoming >>> feature? >> Generator expressions are generally only useful for things which are >> determined at generate-time. >> >> Can't you just read the test property at configure-time instead? You're >> the one setting the property, right? > > Deferring evaluation to generation time does have the advantage that you > can set and change properties at any point after the test has been > created and you can still be sure that the test is invoked with the > final value.
Right. What I missed is that Chris seems to be making an interface for other unknown downstreams to use (a cet_test function). It would be possible to require the user of cet_test to specify the SKIP_RETURN_CODE in a parameter, but there would be unexpected behavior if someone omitted that parameter and wrote cet_test(mytest ...) set_test_property(mytest PROPERTIES SKIP_RETURN_CODE ...) instead. A lot of effort went into cmake targets to make wrappers like kde4_add_executable/kde4_add_library unnecessary, and generator expressions were a part of that. Perhaps it makes sense to put similar effort into making add_test wrappers unnecessary, and generator expressions for test properties could be part of that. However, I don't have so much experience with doing beyond-basic things with ctest, so I don't know what kinds of issues arise which lead people to create wrappers like that, so I probably can't be of much help. Thanks, Steve. -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
