code: def test_op_conv(self):
      bs, in_chans, out_chans = 1, 12, 32
      tiny_conv = Conv2d(in_chans, out_chans, 3, bias=None, padding=1)
      tiny_dconv = Conv2d(out_chans, out_chans, 1, bias=None, padding=0)
      tiny_dat = Tensor.ones(bs, 12, 64, 128)
      p2 = tiny_conv(tiny_dat).relu()
      p2 = tiny_dconv(p2)
      p2.realize()
  
file_path: tinygrad/test/external/external_test_image.py
imports: import os
  import unittest
  import numpy
  from tinygrad.tensor import Tensor
  from tinygrad.nn import Conv2d
label_desc: Use image node_id 5 for calling the TestImage obj's underlying member method code with example usage: obj.test_op_conv() without return types