code: def testNormalizeTuple(self):
      self.assertEqual(
          (2, 2, 2), utils.normalize_tuple(2, n=3, name="strides")
      )
      self.assertEqual(
          (2, 1, 2),
          utils.normalize_tuple((2, 1, 2), n=3, name="strides"),
      )
  
      with self.assertRaises(ValueError):
          utils.normalize_tuple((2, 1), n=3, name="strides")
  
      with self.assertRaises(ValueError):
          utils.normalize_tuple(None, n=3, name="strides")
  
file_path: tensorflow-upstream/tensorflow/python/layers/utils_test.py
imports: from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.layers import utils
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the ConvUtilsTest obj's underlying member method code with example usage: obj.testNormalizeTuple() without return types