code: def test_b2(self):
      self.assertEqual(self._b2.shape, (4, 3, 2))
  
      b2 = 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._b2, b2)
  
imports: import os
  import unittest
  import numpy
  import tensorflow
  import tensorlayer
  from tests.utils import CustomTestCase
label_desc: Use image node_id 4 for calling the Array_Op_Alphas_Test obj's underlying member method code with example usage: obj.test_b2() without return types