code: def test_variable_with_empty_tuple_has_empty_axes(self):
      class VarTest(nn.Module):
          @nn.compact
          def __call__(self, x):
              foo = partitioning.variable_with_axes(
                  "test", "foo", jnp.zeros, (2, 2), x.dtype, axes=()
              )
              return x + foo.value
  
      k = random.key(0)
      x = jnp.ones((2, 2))
      variables = VarTest().init(k, x)
      logical_axis_names = partitioning.get_axis_names(
          variables["test_axes"]
      )
      self.assertEqual(
          logical_axis_names, {"foo": jax.sharding.PartitionSpec()}
      )
  
imports: import jax
  import jax.numpy
  from absl.testing import absltest, parameterized
  from jax import random, sharding
  from jax.experimental import mesh_utils
  from flax import linen
  from flax.core import freeze, unfreeze
  from flax.linen import partitioning
label_desc: Use image node_id 12 for calling the PartitioningTest obj's underlying member method code with example usage: obj.test_variable_with_empty_tuple_has_empty_axes() and returns: unknown