code: def test_validate_should_fail_if_body_is_not_a_dict(self):
      specification = [dict(name="name", allow_empty=False)]
      body = [{"name": "bigquery"}]
  
      validator = GcpBodyFieldValidator(specification, "v1")
  
      with pytest.raises(AttributeError):
          validator.validate(body)
  
imports: from __future__ import annotations
  import pytest
  from airflow.providers.google.cloud.utils.field_validator import GcpBodyFieldValidator, GcpFieldValidationException, GcpValidationSpecificationException
label_desc: Use image node_id 7 for calling the TestGcpBodyFieldValidator obj's underlying member method code with example usage: obj.test_validate_should_fail_if_body_is_not_a_dict() without return types