code: def test_get_parallel_devices_raises(tpu_available):
      with pytest.raises(ValueError, match="devices` can only be"):
          XLAAccelerator.get_parallel_devices(0)
      with pytest.raises(ValueError, match="devices` can only be"):
          XLAAccelerator.get_parallel_devices(5)
      with pytest.raises(
          ValueError, match="Could not parse.*anything-else'"
      ):
          XLAAccelerator.get_parallel_devices("anything-else")
  
imports: import pytest
  from lightning.fabric.accelerators.xla import _XLA_AVAILABLE, XLAAccelerator
  from tests_fabric.helpers.runif import RunIf
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_parallel_devices_raises(tpu_available) without return types