code: def test_vgg(self):
      model = VGG()
      test_input = torch.randn(1, 1, 96, 64)
      out = model(test_input)
      self.assertTrue(out.shape == (1, 128))
  
imports: import unittest
  import torch
  from towhee.models.vggish.torch_vggish import VGG
label_desc: Use image node_id 1 for calling the TestVGG obj's underlying member method code with example usage: obj.test_vgg() without return types