[arch-general] Testing question

Hey list, Is there a way to enable the testing repo and install updates (with pacman -Suyy) from the other repositories and only install updates from testing if I explicitly mention it with some pacman command? Thanks -- Caution: breathing may be hazardous to your health. #include <stdio.h> int main(){printf("%s","\x4c\x65\x6f\x6e\x69\x64\x61\x73");}