code: def test_regression_error(diabetes_split_dataset_and_model):
      # Arrange
      _, test, clf = diabetes_split_dataset_and_model
      check = RegressionSystematicError()
      # Act X
      result = check.run(test, clf)
      # Assert
      assert_that(result.value["rmse"], close_to(57.5, 0.1))
      assert_that(result.value["mean_error"], close_to(-0.008, 0.001))
      assert_that(result.display, has_length(greater_than(0)))
  
file_path: deepchecks/tests/tabular/checks/model_evaluation/regression_systematic_error_test.py
imports: from hamcrest import assert_that, calling, close_to, greater_than, has_items, has_length, raises
  from deepchecks.core.errors import DeepchecksNotSupportedError, DeepchecksValueError, ModelValidationError
  from deepchecks.tabular.checks.model_evaluation import RegressionSystematicError
  from deepchecks.tabular.dataset import Dataset
  from tests.base.utils import equal_condition_result
label_desc: Use image node_id 4 for calling a global function with example usage: test_regression_error(diabetes_split_dataset_and_model) without return types