code: def test_ci_quantiles_empty(self):
      msg = "Must specify both n_boot and ci_quantiles"
      with pytest.raises(ValueError) as execInfo:
          _ = MetricFrame(
              metrics={"mse": skm.mean_squared_error},
              y_true=y_t,
              y_pred=y_p,
              sensitive_features=g_1,
              n_boot=N_BOOTSTRAP,
              ci_quantiles=[],
              random_state=13489623,
          )
      assert execInfo.value.args[0] == msg
  
imports: import numpy
  import pytest
  import sklearn.metrics
  from fairlearn.metrics import MetricFrame, count
  from .data_for_test import g_1, g_2, y_p, y_t
label_desc: Use image node_id 3 for calling the TestErrors obj's underlying member method code with example usage: obj.test_ci_quantiles_empty() without return types