code: def test_block_runtime_error_type_caster_eigen_ref_made_a_copy():
      with pytest.raises(RuntimeError) as excinfo:
          m.block(ref, 0, 0, 0, 0)
      assert (
          str(excinfo.value)
          == "type_caster for Eigen::Ref made a copy."
      )
  
imports: import pytest
  from pybind11_tests import ConstructorStats
label_desc: Use image node_id 11 for calling a global function with example usage: test_block_runtime_error_type_caster_eigen_ref_made_a_copy() without return types