code: def testNpPad(self):
      self.assertAllEqual(
          np.array(
              [
                  [0, 0, 0, 0, 0, 0],
                  [0, 3, 3, 0, 0, 0],
                  [0, 4, 4, 0, 0, 0],
                  [0, 5, 5, 0, 0, 0],
                  [0, 0, 0, 0, 0, 0],
                  [0, 0, 0, 0, 0, 0],
              ]
          ),
          self._npPad(
              np.array([[3, 3], [4, 4], [5, 5]]),
              [[1, 2], [1, 3]],
              mode="constant",
          ),
      )
  
      self.assertAllEqual(
          np.array(
              [
                  [1, 1, 1, 1, 1, 1],
                  [1, 3, 3, 1, 1, 1],
                  [1, 4, 4, 1, 1, 1],
                  [1, 5, 5, 1, 1, 1],
                  [1, 1, 1, 1, 1, 1],
                  [1, 1, 1, 1, 1, 1],
              ]
          ),
          self._npPad(
              np.array([[3, 3], [4, 4], [5, 5]]),
              [[1, 2], [1, 3]],
              mode="constant",
              constant_values=1,
          ),
      )
  
      self.assertAllEqual(
          np.array(
              [
                  [4, 3, 4, 9, 4, 3],
                  [1, 0, 1, 2, 1, 0],
                  [4, 3, 4, 9, 4, 3],
                  [1, 0, 1, 2, 1, 0],
              ]
          ),
          self._npPad(
              np.array([[0, 1, 2], [3, 4, 9]]),
              [[1, 1], [1, 2]],
              mode="reflect",
          ),
      )
  
      self.assertAllEqual(
          np.array(
              [
                  [0, 0, 1, 2, 2, 1],
                  [0, 0, 1, 2, 2, 1],
                  [3, 3, 4, 9, 9, 4],
                  [3, 3, 4, 9, 9, 4],
              ]
          ),
          self._npPad(
              np.array([[0, 1, 2], [3, 4, 9]]),
              [[1, 1], [1, 2]],
              mode="symmetric",
          ),
      )
  
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 3 for calling the PadOpTest obj's underlying member method code with example usage: obj.testNpPad() without return types