code: def test_io_tensor_scalar(fixture_lookup, io_tensor_fixture):
      """test_io_tensor_scalar"""
      args, func, expected, equal = fixture_lookup(io_tensor_fixture)
  
      values = func(args)
  
      # Test to_tensor
      entries = [value.to_tensor() for value in values]
      assert len(entries) == len(expected)
      assert np.all([equal(v, e) for v, e in zip(entries, expected)])
  
imports: import os
  import shutil
  import tempfile
  import numpy
  import pytest
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 20 for calling a global function with example usage: test_io_tensor_scalar(fixture_lookup, io_tensor_fixture) without return types