docstr: Test for `fold_in`.
docstr_tok: ["Test","for","`","fold_in","`","."]
code: def testFoldIn(self, dtype):
      """Test for `fold_in`."""
      orig_seed = constant_op.constant([1, 2], dtype="int32")
      seed = stateless.fold_in(
          orig_seed, constant_op.constant(3, dtype=dtype)
      )
      new_seeds = []
      new_seeds.append(seed)
      seed = stateless.fold_in(
          seed, constant_op.constant(4, dtype=dtype)
      )
      new_seeds.append(seed)
      for s in new_seeds:
          self.assertEqual(s.shape, [2])
          self.assertDTypeEqual(s.dtype, dtype)
      self.assertNoEqualPair(
          [math_ops.cast(orig_seed, dtype)] + new_seeds
      )
  
imports: import functools
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.compat import compat
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import random_seed
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import gen_stateless_random_ops_v2
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import stateless_random_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 26 for calling the StatelessOpsTest obj's underlying member method code with example usage: obj.testFoldIn(dtype) without return types