adding test_auto_change_buffering
adding test_auto_change_buffering

Stupeflix/sh,ppannuto/sh,rsmith31415/sh,simudream/sh,achernet/sh,pdelong42/sh,amoffat/sh,hacosta/python-sh,twocngdagz/sh,rdhyee/sh,amoffat/sh,hacosta/python-sh,germangh/sh,pombredanne/sh,z-fork/sh,lwgarmstrong/sh,jakirkham/sh