code: def testIsSliceApplicable(self):
      test_cases = [
          (
              "applicable",
              ["column1"],
              [("column3", "value3"), ("column4", "value4")],
              (
                  ("column1", "value1"),
                  ("column3", "value3"),
                  ("column4", "value4"),
              ),
              True,
          ),
          (
              "wrongcolumns",
              ["column1", "column2"],
              [("column3", "value3"), ("column4", "value4")],
              (
                  ("column1", "value1"),
                  ("column3", "value3"),
                  ("column4", "value4"),
              ),
              False,
          ),
          (
              "wrongfeatures",
              ["column1"],
              [("column3", "value3")],
              (
                  ("column1", "value1"),
                  ("column3", "value3"),
                  ("column4", "value4"),
              ),
              False,
          ),
          (
              "nocolumns",
              [],
              [("column3", "value3")],
              (
                  ("column1", "value1"),
                  ("column3", "value3"),
                  ("column4", "value4"),
              ),
              False,
          ),
          (
              "nofeatures",
              ["column1"],
              [],
              (("column1", "value1"),),
              True,
          ),
          (
              "empty slice key",
              ["column1"],
              [("column2", "value1")],
              (),
              False,
          ),
          ("overall", [], [], (), True),
      ]  # pyformat: disable
  
      for name, columns, features, slice_key, result in test_cases:
          slice_spec = slicer.SingleSliceSpec(
              columns=columns, features=features
          )
          self.assertEqual(
              slice_spec.is_slice_applicable(slice_key),
              result,
              msg=name,
          )
  
imports: from absl.testing import parameterized
  import apache_beam
  from apache_beam.testing import util
  import numpy
  import six
  import tensorflow
  from tensorflow_model_analysis import constants
  from tensorflow_model_analysis.api import types
  from tensorflow_model_analysis.eval_saved_model import testutil
  from tensorflow_model_analysis.extractors import slice_key_extractor
  from tensorflow_model_analysis.post_export_metrics import metric_keys
  from tensorflow_model_analysis.proto import config_pb2
  from tensorflow_model_analysis.proto import metrics_for_slice_pb2
  from tensorflow_model_analysis.slicer import slicer_lib
  from google.protobuf import text_format
label_desc: Use image node_id 19 for calling the SlicerTest obj's underlying member method code with example usage: obj.testIsSliceApplicable() without return types