def METHOD_NAME(mocker: MockFixture, session: Session) -> None:
    """
    Test importing a database.
    """
    from superset import security_manager
    from superset.databases.commands.importers.v1.utils import import_database
    from superset.models.core import Database
    from tests.integration_tests.fixtures.importexport import database_config
    mocker.patch.object(security_manager, "can_access", return_value=True)
    engine = session.get_bind()
    Database.metadata.create_all(engine)  # pylint: disable=no-member
    config = copy.deepcopy(database_config)
    database = import_database(session, config)
    assert database.database_name == "imported_database"
    assert database.sqlalchemy_uri == "someengine://user:pass@host1"
    assert database.cache_timeout is None
    assert database.expose_in_sqllab is True
    assert database.allow_run_async is False
    assert database.allow_ctas is True
    assert database.allow_cvas is True
    assert database.allow_dml is True
    assert database.allow_file_upload is True
    assert database.extra == "{}"
    assert database.uuid == "b8a1ccd3-779d-4ab7-8ad8-9ab119d7fe89"
    assert database.is_managed_externally is False
    assert database.external_url is None
    # ``allow_dml`` was initially not exported; the import should work if the field is
    # missing
    config = copy.deepcopy(database_config)
    del config["allow_dml"]
    session.delete(database)
    session.flush()
    database = import_database(session, config)
    assert database.allow_dml is False