The Extended Suspend/Resume test snr-002 in http://testcases.qa.ubuntu.com/Plans/LaptopTesting says to run /usr/share/checkbox/scripts/suspend_test. A recent comment on bug https://bugs.launchpad.net/ubuntu/+source/checkbox/+bug/848553 says that suspend_test is deprecated, and recommends /usr/share/checkbox/scripts/sleep_test.