class_docstr: Test WaveVitUtils model
code: def test_IDWT2D(self):
      xx = torch.randn(1, 3, 24, 24)
      dwt = DWT2D(wave="haar")
      dwt.float()
      out = dwt(xx)
      self.assertTrue(out.shape, (1, 12, 12, 12))
  
imports: import unittest
  import torch
  from towhee.models.wave_vit.wave_vit_utils import IDWT2D, DWT2D
label_desc: Use image node_id 1 for calling the TestWaveVitUtils obj's underlying member method code with example usage: obj.test_IDWT2D() without return types