code: def test_invalid_backend(self):
      self.assertRaises(
          torch._dynamo.exc.InvalidBackend,
          lambda: torch.compile(dummy_fn, backend="does_not_exist")(
              torch.randn(10)
          ),
      )
  
imports: import math
  import unittest
  import torch
  from torch._dynamo.test_case import run_tests, TestCase
  from torch._inductor import config
  from torch.testing._internal.inductor_utils import HAS_CPU
label_desc: Use image node_id 12 for calling the TestInductorConfig obj's underlying member method code with example usage: obj.test_invalid_backend() without return types