def test_all_devices_used(self):
        existing = ['sd' + ch for ch in ascii_lowercase]
        self.assertRaises(NoAvailableDevice, _select_free_device, existing)
Initializes the instance.
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/test/test_ebs.py/SelectFreeDeviceTests.test_all_devices_used--crossover with--dataset/ETHPy150Open scalyr/scalyr-agent-2/scalyr_agent/builtin_monitors/linux_system_metrics.py/WriterThread.__init__