1 This is a smoke test of dex conversion, which checks to see that 2 assigning a reference variable to null works, as well as explicitly 3 returning a null. 4 5 This test compares emitted code against a known-good (via eyeballing) 6 version, so it is possible for this test to spuriously fail if other 7 aspects of conversion end up altering the output in innocuous ways. 8