code: def test_get_features_correlation(self):
      p_groups = bias_detector.get_p_groups(
          first_names=first_names_mock,
          last_names=last_names_mock,
          zip_codes=zip_codes_mock,
      )
      features = p_groups.rename(columns=lambda x: "feature_" + x)
      features_groups_correlation = (
          bias_detector.get_features_groups_correlation(
              first_names=first_names_mock,
              last_names=last_names_mock,
              zip_codes=zip_codes_mock,
              features=features,
          )
      )
      assert np.diag(features_groups_correlation).sum() == len(
          p_groups.columns
      )
      with pytest.raises(
          ValueError,
          match="first_names/last_names/zip_codes must be provided",
      ):
          bias_detector.get_features_groups_correlation(
              first_names=None,
              last_names=None,
              zip_codes=None,
              features=features,
          )
      with pytest.raises(
          ValueError, match="features DataFrame must be provided"
      ):
          bias_detector.get_features_groups_correlation(
              first_names=first_names_mock,
              last_names=last_names_mock,
              zip_codes=zip_codes_mock,
              features=None,
          )
      with pytest.raises(
          ValueError, match="Input data has different lengths"
      ):
          bias_detector.get_features_groups_correlation(
              first_names=first_names_mock.head(1),
              last_names=last_names_mock,
              zip_codes=zip_codes_mock,
              features=features,
          )
      with pytest.raises(
          ValueError,
          match="method should be 'pearson'/'kendall'/'spearman'",
      ):
          bias_detector.get_features_groups_correlation(
              first_names=first_names_mock,
              last_names=last_names_mock,
              zip_codes=zip_codes_mock,
              features=features,
              method="other",
          )
  
file_path: bias-detector/tests/test_BiasDetector.py
imports: import pytest
  from bias_detector.BiasDetector import *
  from .common import *
  from bias_detector.BiasMetric import BiasMetric
label_desc: Use image node_id 4 for calling the TestBiasDetector obj's underlying member method code with example usage: obj.test_get_features_correlation() without return types