code: def testScalars(self):
      paddings = np.zeros((0, 2), dtype=np.int32)
      inp = np.asarray(7)
      with test_util.use_gpu():
          tf_val = array_ops.pad(inp, paddings)
          out = self.evaluate(tf_val)
      self.assertAllEqual(inp, out)
      self.assertShapeEqual(inp, tf_val)
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gradient_checker_v2
  from tensorflow.python.platform import test
label_desc: Use image node_id 25 for calling the PadOpTest obj's underlying member method code with example usage: obj.testScalars() without return types