def test_substitutions():
fn = models._expand_filename(filename=' {CMD} {CMD} {PID} {TID}').split()
cmd = os.path.basename(sys.argv[0])
assert fn[1] == cmd, fn[1] + ' != ' + cmd
assert fn[1] == fn[2], 'unable to repeat substitutions'
assert fn[3] == str(os.getpid()), 'PID wrong'
assert fn[4] == str(libgettid.gettid()), 'TID wrong'
def test_defaults():
"""Threadsafe defaults in expanded filename"""
fn = models._expand_filename()
assert str(os.getpid()) in fn, 'missing PID'
assert str(libgettid.gettid()) in fn, 'missing TID'
assert fn.endswith('.mmstats'), 'missing .mmstats extension'