docstr: Test that a TensorSpec with a dtype raises an error
  when being used with a tensor from a different dtype but works otherwise.
docstr_tok: ["Test","that","a","TensorSpec","with","a","dtype","raises","an","error","when","being","used","with","a","tensor","from","a","different","dtype","but","works","otherwise","."]
code: def test_validate_dtype(self):
      """
      Test that a TensorSpec with a dtype raises an error
      when being used with a tensor from a different dtype but works otherwise.
      """
  
      all_types = [DOUBLE_TYPE, FLOAT_TYPE]
  
      for spec_types, tensor_types in itertools.product(
          all_types, all_types
      ):
          for spec_fw, tensor_fw in itertools.product(
              FRAMEWORKS_TO_TEST, FRAMEWORKS_TO_TEST
          ):
              # Pick the correct types for the frameworks
              spec_type = spec_types[spec_fw]
              tensor_type = tensor_types[tensor_fw]
  
              print(
                  "\nTesting.." "\nspec_fw: ",
                  spec_fw,
                  "\ntensor_fw: ",
                  tensor_fw,
                  "\nspec_type: ",
                  spec_type,
                  "\ntensor_type: ",
                  tensor_type,
              )
  
              spec = TensorSpec("b, h", b=2, h=3, dtype=spec_type)
              tensor = TensorSpec(
                  "b, h",
                  b=2,
                  h=3,
                  framework=tensor_fw,
                  dtype=tensor_type,
              ).fill(0)
  
              if spec_type != tensor_type:
                  self.assertRaises(
                      ValueError, lambda: spec.validate(tensor)
                  )
              else:
                  spec.validate(tensor)
  
file_path: ray/rllib/core/models/specs/tests/test_tensor_spec.py
imports: import itertools
  import unittest
  import numpy
  from ray.rllib.utils import try_import_jax, try_import_tf, try_import_torch
  from ray.rllib.utils.test_utils import check
  from ray.rllib.core.models.specs.specs_base import TensorSpec
label_desc: Use image node_id 8 for calling the TestSpecs obj's underlying member method code with example usage: obj.test_validate_dtype() without return types