def METHOD_NAME(self, dd_run_check, aggregator, mock_read_bearer_token):
    """
    Testing the default configuration.
    """
    check = KubeAPIServerMetricsCheck('kube_apiserver_metrics', {}, [minimal_instance])
    check.process = mock.MagicMock()
    dd_run_check(check)
    apiserver_instance = check.kube_apiserver_config
    assert not apiserver_instance["ssl_verify"]
    assert apiserver_instance["bearer_token_auth"]
    assert apiserver_instance["prometheus_url"] == "https://localhost:443/metrics"