Replace setup/teardown with before/after
Replace setup/teardown with before/after

setup/teardown is no longer supported.  They are replaced with
before_each, before_all, after_each, and after_all.  *_each are
invoked before/after each test cases, and *_all are invoked
before/after all test cases.

iBenza/bashtub,ueokande/bashtub