code: def test_custom_operator_new():
      """Using Eigen types as member variables requires a class-specific
      operator new with proper alignment"""
  
      o = m.CustomOperatorNew()
      np.testing.assert_allclose(o.a, 0.0)
      np.testing.assert_allclose(o.b.diagonal(), 1.0)
  
imports: import pytest
  from pybind11_tests import ConstructorStats
label_desc: Use image node_id 32 for calling a global function with example usage: test_custom_operator_new() without return types