def test_vector_custom(): from pybind11_tests import El, VectorEl, VectorVectorEl v_a = VectorEl() v_a.append(El(1)) v_a.append(El(2)) assert str(v_a) == "VectorEl[El{1}, El{2}]" vv_a = VectorVectorEl() vv_a.append(v_a) vv_b = vv_a[0] assert str(vv_b) == "VectorEl[El{1}, El{2}]"