def test_downstream_selection(self, project):
        """Ensure that selecting test+ does not select model_a's other children"""
        # fails with "Got 1 result, configured to fail if != 0"
        # model_a is defined as select null as id
        results = run_dbt(["build", "--select", "model_a not_null_model_a_id+"], expect_pass=False)
        assert len(results) == 2
Ensure that selecting test+ does not select model_a's other children
tests/functional/build_command/test_build.py