def test_get_supported_filesystems(self, mock_os, mock_util):
""" test parsing /proc/filesystems contents into a filesystem list"""
mock_os.path.exists.return_value = True
mock_util.load_file.return_value = self._proc_filesystems_output()
result = block.get_supported_filesystems()
self.assertEqual(sorted(self.supported_filesystems), sorted(result))
def test_get_supported_filesystems_no_proc_path(self, mock_os, mock_util):
""" missing /proc/filesystems raises RuntimeError """
mock_os.path.exists.return_value = False
with self.assertRaises(RuntimeError):
block.get_supported_filesystems()
self.assertEqual(0, mock_util.load_file.call_count)