Fix memory leaks by adding missing destroy calls for events, streams, and graphs at the end of tests. Ensure that every test case executes destroy calls, regardless of whether it passes or fails. Change-Id: I814e35c528d90ed2abb34d77377f1a7fd3f1f11c
Change-Id: If72e312461a72920b6a482009c9aef4cf92f2e1b
Change-Id: Ibe338af731a4f0e21d5c8def8ac125532b75969e
Change-Id: I674741e641b1ebd6adb5c60c05c2d8ade27510c6