code: def test_num_paddings_dynamic(self):
      n = tf1.placeholder_with_default(2, shape=None)
      x = ps.pad([2, 3], paddings=[[0, n]], constant_values=1)
      if not ps.is_numpy(x):
          x = self.evaluate(x)
      self.assertAllEqual([2, 3, 1, 1], x)
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import prefer_static
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 1 for calling the PadTest obj's underlying member method code with example usage: obj.test_num_paddings_dynamic() without return types