docstr: Tests sharding and unsharding scalars.
docstr_tok: ["Tests","sharding","and","unsharding","scalars","."]
code: def testScalar(self):
      """Tests sharding and unsharding scalars."""
      p = tpu_sharding.ShardingPolicy()
      p.freeze()
      self.assertEqual(p.get_sharded_shape([]), [])
      self.assertEqual(p.get_unsharded_shape([[]]), [])
  
file_path: tensorflow-upstream/tensorflow/python/tpu/tpu_sharding_test.py
imports: from tensorflow.python.framework import tensor_shape
  from tensorflow.python.platform import test
  from tensorflow.python.tpu import tpu_sharding
label_desc: Use image node_id 8 for calling the ShardingTest obj's underlying member method code with example usage: obj.testScalar() without return types