code: def test_pad_tensor():
      results = pad_tensor(tensor, max_len)
      assert len(tensor) == 3
      assert np.array_equal(results, [1, 1, 1, 0, 0, 0, 0, 0, 0, 0])
  
      results = pad_tensor(tensor, max_len, mode="last")
      assert np.array_equal(results, [1, 1, 1, 1, 1, 1, 1, 1, 1, 1])
  
file_path: garage/tests/garage/np/test_functions.py
imports: import warnings
  import numpy
  from garage.np import concat_tensor_dict_list, explained_variance_1d, pad_batch_array, pad_tensor, stack_and_pad_tensor_dict_list, stack_tensor_dict_list
label_desc: Use image node_id 3 for calling a global function with example usage: test_pad_tensor() without return types