code: def test_get_size_atomic_units():
      assert get_size_str(1, input_unit="B") == "1 B"
      assert (
          get_size_str(1024, input_unit="B", output_unit="KB")
          == "1.0 KB"
      )
      assert (
          get_size_str(1048576, input_unit="B", output_unit="MB")
          == "1.0 MB"
      )
      assert (
          get_size_str(1073741824, input_unit="B", output_unit="GB")
          == "1.0 GB"
      )
      assert (
          get_size_str(1099511627776, input_unit="B", output_unit="TB")
          == "1.0 TB"
      )
  
      assert get_size_str(1024**5) == "1024.0 TB"
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_size_atomic_units() without return types