docstr: Test variable_dtype, compute_dtype, and name properties.
docstr_tok: ["Test","variable_dtype",",","compute_dtype",",","and","name","properties","."]
code: def test_properties(self):
      """Test variable_dtype, compute_dtype, and name properties."""
      policy = DTypePolicy("mixed_float16")
      self.assertEqual(policy.variable_dtype, "float32")
      self.assertEqual(policy.compute_dtype, "float16")
      self.assertEqual(policy.name, "mixed_float16")
  
imports: from keras.mixed_precision import DTypePolicy
  from keras.mixed_precision import dtype_policy
  from keras.mixed_precision import set_dtype_policy
  from keras.testing import test_case
label_desc: Use image node_id 7 for calling the DTypePolicyTest obj's underlying member method code with example usage: obj.test_properties() without return types