rt-tests from home:ighvh:devel-kernels project
Select Your Operating System
Add repository and install manually
For OpenSuSE 42.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ighvh:devel-kernels/OpenSuSE 42.3/home:ighvh:devel-kernels.repo zypper refresh zypper install rt-tests