code: def test_fixed():
      assert_equal_ref(m.fixed_c())
      assert_equal_ref(m.fixed_r())
      assert_equal_ref(m.fixed_copy_r(m.fixed_r()))
      assert_equal_ref(m.fixed_copy_c(m.fixed_c()))
      assert_equal_ref(m.fixed_copy_r(m.fixed_c()))
      assert_equal_ref(m.fixed_copy_c(m.fixed_r()))
  
imports: import pytest
  from pybind11_tests import ConstructorStats
label_desc: Use image node_id 3 for calling a global function with example usage: test_fixed() without return types