code: def test_auto_layout(self):
      mesh = jtu.create_global_mesh((4, 2), ("x", "y"))
      shape1 = (128, 128)
      shape2 = (128, 128)
  
      def apply(x, y):
          return x.T, y.T
  
      def init(x, y):
          return x * 2, y * 2
  
      np_inp1 = np.arange(math.prod(shape1)).reshape(shape1)
      arr1 = jax.device_put(np_inp1, NamedSharding(mesh, P("x", "y")))
      np_inp2 = np.arange(math.prod(shape2)).reshape(shape2)
      arr2 = jax.device_put(np_inp2, NamedSharding(mesh, P("x")))
  
      lowered_apply = jax.jit(apply).lower(
          arr1, arr2, _in_layouts=layout.AUTO, _out_layouts=layout.AUTO
      )
      compiled_apply = lowered_apply.compile()
  
      arg_layouts, kw_layouts = compiled_apply._input_layouts()
      self.assertEmpty(kw_layouts)
      for i, o in zip(arg_layouts, compiled_apply._output_layouts()):
          self.assertEqual(i._minor_to_major, o._minor_to_major[::-1])
  
      init_compiled = (
          jax.jit(init)
          .lower(arr1, arr2, _out_layouts=arg_layouts)
          .compile()
      )
  
      for i, o in zip(
          init_compiled._input_layouts()[0],
          init_compiled._output_layouts(),
      ):
          self.assertEqual(i._minor_to_major, o._minor_to_major)
  
      with jtu.count_aot_jit_cpp_cache_miss() as init_count:
          init_out = init_compiled(arr1, arr2)
          init_compiled(arr1, arr2)
      self.assertEqual(init_count[0], 1)
  
      with jtu.count_aot_jit_cpp_cache_miss() as apply_count:
          apply_out = compiled_apply(*init_out)
          compiled_apply(*init_out)
      self.assertEqual(apply_count[0], 1)
  
      self.assertArraysEqual(init_out[0], np_inp1 * 2)
      self.assertArraysEqual(init_out[1], np_inp2 * 2)
      self.assertArraysEqual(apply_out[0], (np_inp1 * 2).T)
      self.assertArraysEqual(apply_out[1], (np_inp2 * 2).T)
  
imports: import math
  import os
  from absl.testing import absltest
  import numpy
  import jax
  from jax.sharding import NamedSharding, PartitionSpec
  from jax._src import config
  from jax._src import layout
  from jax._src import test_util
  from jax._src.util import safe_zip
  from jax._src import xla_bridge
  from jax._src.lib import xla_extension_version
label_desc: Use image node_id 2 for calling the LayoutTest obj's underlying member method code with example usage: obj.test_auto_layout() and returns: x,  y, unknown,  unknown