class_docstr: Class to test that each validator test gets run
  
  We check this in the module teardown function
code: def teardown_class(cls):
      # Check that both validate_xxx tests got run
      assert cls.run_tests == ["first", "second"]
  
file_path: nibabel/nibabel/tests/test_api_validators.py
imports: import os
  import pytest
label_desc: Use image node_id 4 for calling the TestRunAllTests obj's underlying member method code with example usage: obj.teardown_class(cls) without return types