code: def testSlidingWindow_SingleEntry(self):
      a1 = test_utils.DummyArtifact()
  
      actual = self._sliding_window([a1])
      self.assertEqual(actual, [{"window": [a1]}])
  
      actual = self._sliding_window(
          [a1], window_size=1, output_key="key"
      )
      self.assertEqual(actual, [{"key": [a1]}])
  
      # The final window size will be 0, so no artifacts will be returned.
      actual = self._sliding_window([a1], window_size=2)
      self.assertEqual(actual, [])
  
file_path: tfx/tfx/dsl/input_resolution/ops/sliding_window_op_test.py
imports: import tensorflow
  from tfx.dsl.input_resolution.ops import ops
  from tfx.dsl.input_resolution.ops import test_utils
label_desc: Use image node_id 4 for calling the SlidingWindowOpTest obj's underlying member method code with example usage: obj.testSlidingWindow_SingleEntry() without return types