import pytest @pytest.mark.usefixtures("state") def test_create_node_different_id_simple(state): id1 = state.create_node() assert id1 is not None id2 = state.create_node() assert id2 is not None assert id1 != id2 @pytest.mark.usefixtures("state") def test_create_node_different_id_long(state): results = set() for i in range(1000): v = state.create_node() assert v is not None results.add(v) assert len(results) == 1000