code: def test_diagonal_compose_is_associative(self):
      for inp_a, inp_b, inp_c in itertools.product(stax.Bool, repeat=3):
          for out_a, out_b, out_c in itertools.product(
              stax.Bool, repeat=3
          ):
              a = stax.Diagonal(inp_a, out_a)
              b = stax.Diagonal(inp_b, out_b)
              c = stax.Diagonal(inp_c, out_c)
              with self.subTest(a=a, b=b, c=c):
                  ab_c = (a >> b) >> c
                  a_bc = a >> (b >> c)
                  self.assertEqual(ab_c, a_bc)
  
                  _ab_c = c << (b << a)
                  _a_bc = (c << b) << a
                  self.assertEqual(_ab_c, _a_bc)
  
                  self.assertEqual(ab_c, _ab_c)
  
imports: import itertools
  import random
  from absl.testing import absltest
  from jax import config
  from jax import default_backend
  from jax import jit
  from jax import random
  import jax.numpy
  import neural_tangents
  from neural_tangents import stax
  from neural_tangents._src.empirical import _DEFAULT_TESTING_NTK_IMPLEMENTATION
  from tests import test_utils
label_desc: Use image node_id 1 for calling the DiagonalClassTest obj's underlying member method code with example usage: obj.test_diagonal_compose_is_associative() without return types