def METHOD_NAME(self, fake_mtime, db_session):
    """Test dataset constructor without a file column"""
    with pytest.raises(TemplateFileMissing) as e:
        Template(
            name="run",
            idxname="run-data",
            template_name="tname",
            template_pattern="drb.v1.run.*",
            index_template="drb.v1.run.{year}-{month}",
            settings={"none": False},
            mappings={"properties": None},
            version=5,
        )
    assert str(e).find("run") != -1