code: def testCompatValidEncoding(self):
      self.assertEqual(compat.as_bytes("hello", "utf8"), b"hello")
      self.assertEqual(compat.as_text(b"hello", "utf-8"), "hello")
  
imports: from tensorflow.python.platform import test
  from tensorflow.python.util import compat
label_desc: Use image node_id 1 for calling the CompatTest obj's underlying member method code with example usage: obj.testCompatValidEncoding() without return types