RUNIT::Teardownable module

Methods:

attach_teardown(teardownmethod, testmethod1 [,testmethod2,...])
Attaches teardownmethod to testmethod1 (, testmethod2). The teardownmethod is called after testmethod1 (, testmethod2) called, before teardown called
invoke_teardown(testmethod1)
Invokes teardown method which is attached to testmethod1. If the teardown not found, then does nothing.