def __init__(self, size=_DEFAULT_BUFFER_MAXIMUM):
        self._buffer = deque(maxlen=size)
Tests that an exception is raised if it cannot find any yaml files
dataset/ETHPy150Open twisted/twisted/twisted/logger/_buffer.py/LimitedHistoryLogObserver.__init__--crossover with--dataset/ETHPy150Open coursera/dataduct/dataduct/config/tests/test_config.py/TestConfig.test_cannot_find_config_file_raises