class_docstr: Test cases for tf.strings.upper.
code: def test_string_upper(self):
      strings = ["Pigs on The Wing", "aNimals"]
  
      with self.cached_session():
          output = string_ops.string_upper(strings)
          output = self.evaluate(output)
          self.assertAllEqual(output, [b"PIGS ON THE WING", b"ANIMALS"])
  
imports: from tensorflow.python.ops import string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the StringUpperOpTest obj's underlying member method code with example usage: obj.test_string_upper() without return types