code: def test_b3(self):
      self.assertEqual(self._b3.shape, (1, 2, 3, 4))
  
      b3 = np.array(
          [
              [
                  [
                      [-5, -5, -5, -5],
                      [-5, -5, -5, -5],
                      [-5, -5, -5, -5],
                  ],
                  [
                      [-5, -5, -5, -5],
                      [-5, -5, -5, -5],
                      [-5, -5, -5, -5],
                  ],
              ]
          ]
      )
  
      np.array_equal(self._b3, b3)
  
imports: import os
  import unittest
  import numpy
  import tensorflow
  import tensorlayer
  from tests.utils import CustomTestCase
label_desc: Use image node_id 5 for calling the Array_Op_Alphas_Test obj's underlying member method code with example usage: obj.test_b3() without return types